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  • Non-equilibrium theory of projected ensembles
    Fabio Anza, Cameron Hahn
    10 August 2026
    Projected ensembles—the collections of conditional pure states induced on a system by measuring an entangled environment—have become central objects in quantum science, underlying deep thermalization, quantum state designs, the emergence of classicality, and exhibiting…
  • State Diagnostics of Complexity in Open Quantum Systems
    Komal Sah, Fabio Anza, Alexandra M. Jurgens, James P. Crutchfield
    10 August 2026
    We study the emergence of complexity in finite-size quantum systems as their dynamics transition from closed and coherent evolution to interacting and effectively open behavior. Using a state-based geometric framework, we represent mixed quantum states as probability measures on…
  • Quantum fluctuation relations in first-detection processes
    A. Imparato
    6 August 2026
    We derive two quantum fluctuation relations for systems undergoing repeated projective measurements. These fluctuation relations characterize the work that can be extracted from a quantum device when a first-detection event triggers a mechanical operation leading to positive…
  • Master equation for systems interacting with linearized gravity
    Oliviero Angeli, Anirudh Gundhi, Angelo Bassi
    6 August 2026
    We investigate the open quantum dynamics of a system of two masses interacting with an environment of linearized gravitational waves. We formulate the analysis in terms of the observable proper distance between the two masses, and show that the canonical variables obtained from…
  • Quantum Impurities as Probes of Finite-Temperature Fluctuations in Two-Dimensional Bose Gases
    Victor Velasco, Gabriele Spada, Giovanni Midei, Andrea Perali, Luis A. Peña Ardila
    4 August 2026
    Two-dimensional quantum gases provide a distinctive setting in which enhanced thermal fluctuations, finite-size effects, and two-body bound-state formation are intrinsically intertwined. In this work, we study a single attractive impurity immersed in a finite, weakly interacting…
  • Attractor Geometry Determines the Identifiability Limits of System Discovery
    Matteo Gallo, Fabio Anselmi, Paolo Lazzari
    20 July 2026
    Symbolic discovery of governing equations from data is limited not only by algorithm design and data volume, but by the geometry of the attractor: what the long-run dynamics allow to be recovered. Using a within-system design on Lorenz-84, where one forcing parameter drives…
  • PAC–Bayes Bounds on Quotient Parameter Spaces: Geometry-induced Implicit-Bias Priors
    Nicola Aladrah, Fabio Anselmi
    20 July 2026
    Overparameterized models often have continuous parameter symmetries, so different parameters define the same predictor. We show that PAC–Bayesian analysis should be performed on the quotient predictor space: pushing a prior and posterior to the quotient preserves the empirical…
  • Emergence of a monopole phase in the $J_1{-}J_2$ Heisenberg model on the triangular lattice for small magnetic fields
    Sasank Budaraju, Shi Feng, Josef Willsher, Johannes Knolle, Frank Pollmann, Federico Becca
    16 July 2026
    We investigate the ground-state phase diagram of the $J_1{-}J_2$ Heisenberg model on the triangular lattice under an external Zeeman field $H$ by using the variational Monte Carlo approach. We span a region with $0 \le J_2/J_1 \le 0.2$ and $0 \le H/J_1 \le 2$, to assess the fate…
  • First passage time distribution in underdamped harmonic oscillators
    Aubin Archambault, Caroline Crauste-Thibierge, Alberto Imparato, Sergio Ciliberto, Ludovic Bellon
    1 July 2026
    We derive the distribution of the first passage time $t_{fp}$ for the position $x$ of an underdamped harmonic oscillator to overcome a threshold $x_B$. As the $t_{fp}$ distribution depends on the oscillator quality factor $Q$ different approaches are used. At very large quality…
  • First passage time for an underdamped harmonic oscillator and application to the power of an information engine
    Aubin Archambault, Caroline Crauste-Thibierge, Alberto Imparato, Sergio Ciliberto, Ludovic Bellon
    1 July 2026
    The distribution of the first passage time $t_{fp}$ for the position $x$ to overcome a threshold $x_B$ is calculated in an underdamped harmonic oscillator. The proof combines several approaches based on the determination of the eigenvalues of the Kramers differential operator…
  • State-dependent Gaussian gate set using an optical tweezer for trapped ions
    Philip Leindecker, Luka Milanovic, Tanja Behrle, Edgar Brucke, Matteo Marinelli, Julian Schmidt, Jonathan Home, Cornelius Hempel
    30 June 2026
    We demonstrate a state-dependent Gaussian gate set on the motional modes of trapped $^{40}$Ca$^+$ ions, realized with an optical tweezer. Dynamic control of the tweezer intensity and position enables local displacement, squeezing, phase-space rotation, and beamsplitter…
  • Sparse positive maps on qutrits with exact nondecomposability thresholds and PPT-entanglement transitions
    Davide Poderini, Angela Rosy Morgillo, Fabio Benatti, Fabio Anselmi, Chiara Macchiavello, Massimiliano F. Sacchi
    18 June 2026
    We study a family of sparse positive maps on qutrits for which positivity, decomposability, and PPT entanglement can all be analysed explicitly. The block structure of the associated Choi matrices reduces positivity to a Hermitian biquadratic form and leads to exact positivity…
  • Moduli Stabilisation for ADD and the Dark Dimension Scenario
    Andreas P. Braun, Michele Cicoli, Riccardo Milioli, Roberto Valandro
    17 June 2026
    We provide a moduli stabilisation mechanism for realising anisotropic string compactifications with one or two large extra dimensions, corresponding to the ADD and Dark Dimension scenarios. This is achieved within the type IIB Large Volume Scenario, where an exponentially large…
  • Cavity-enhanced superconducting response in an underdoped cuprate
    Angela Montanaro, Vadim Plastovets, Nitesh Khatiwada, Jacopo Fiore, Giacomo Jarc, Abdullah Alabbadi, Antonio Mastropasqua, Enrico Maria Rigoni, Shahla Y. Mathengattil, Simone Dal Zilio, Francesca Fassioli Olsen, Fabio Novelli, Stephan Winnerl, Michael A. Sentef, Dante M. Kennes, Andrew J. Millis, Francesco Piazza, Daniele Fausti
    16 June 2026
    Superconductors carry electrical current without resistance when paired electrons condense into a coherent macroscopic quantum state. In underdoped cuprates, evidence suggests that pairing-related correlations and superconducting fluctuations can survive above the temperature at…
  • Long-term laser frequency stabilization with an FPGA-controlled scanning cavity
    R. Forti, R. Panza, A. Muzi Falconi, S. Sbernardori, A. Vardé, M. Marinelli, A. Carini, F. Scazza
    8 June 2026
    We present an FPGA-based implementation of a scanning transfer cavity lock (STCL) for laser frequency stabilization, allowing for the simultaneous stabilization of multiple laser sources with respect to a single reference laser by means of a continuously scanned Fabry-Perot…
  • A class of half-BPS boundary conditions for $A_{K-1}$ circular quivers
    Davide Bason, Roberto Valandro
    2 June 2026
    We study a string-motivated class of $\tfrac12$-BPS boundary conditions for 4d $\mathcal N=2$ $A_{K-1}$ circular quiver gauge theories, engineered by D4-branes suspended between NS5-branes on a circle. For D4-branes ending on boundary D6-branes, a single-pole ansatz reduces the…
  • Lattice polarons with extended interactions
    Enrique I. Ramírez-Juárez, Genaro Lopez-Olivera, Luis A. Peña Ardila, Arturo Camacho-Guardian
    24 May 2026
    Lattice impurities have recently emerged as a platform in which polarons unveil new quantum many-body states absent in free space and can serve to probe strongly correlated matter. In this work, we investigate two-dimensional lattice polarons with strong on-site repulsion and…
  • Open quantum dynamics without Complete Positivity: a criticism
    Fabio Benatti, Dariusz Chruściński, Saverio Pascazio
    18 May 2026
    The requirement of complete positivity is very often regarded as a fundamental consistency condition for the description of open quantum dynamics. We critically examine this requirement and discuss both its physical motivations and its limitations. We analyze proposals based on…
  • Generating Non-Decomposable Maps with Differentiable Semidefinite Programming
    Angela Rosy Morgillo, Davide Poderini, Fabio Anselmi, Fabio Benatti, Massimiliano F. Sacchi, Chiara Macchiavello
    14 May 2026
    Positive maps that are not decomposable are a key resource in entanglement theory because they can detect bound entangled states, yet systematic methods for constructing them remain limited. We introduce an optimization framework based on differentiable semidefinite programming…
  • Restoration of Ensemble Equivalence by Quantum Fluctuations
    Alessandro Campa, Andrea Trombettoni
    28 April 2026
    We study the thermodynamic phase diagram of a one-dimensional quantum spin chain subjected to both mean-field and nearest-neighbor interactions, and to a transverse magnetic field $h$. The purpose is to determine the effect of the quantum fluctuations, due to the transverse…
  • Can classical theories of gravity produce entanglement?
    Anirudh Gundhi, Giorgia Infantino, Angelo Bassi
    21 April 2026
    A recent paper published in Nature [Nature,646,813(2025)] claims that quantum particles become entangled through their gravitational interaction, even when the gravitational potential is classical. Here we show that the entanglement found by the authors is a consequence of…
  • Superconducting properties of the three-dimensional Hofstadter-Hubbard model below the critical flux for Weyl points
    Pierpaolo Fontana, Luca Lepori, Andrea Trombettoni
    21 April 2026
    The three-dimensional Hofstadter model exhibits a critical rational flux at which Weyl points emerge in the single-particle spectrum. We study the superconducting regime of the model in the presence of a Hubbard attractive interaction by tuning the magnetic flux across its…
  • D2-brane probes of non-toric cDV threefolds via monopole superpotentials
    Andrés Collinucci, Marina Moleti, Roberto Valandro
    10 April 2026
    We develop a framework to construct worldvolume gauge theories on D2-branes probing compound Du Val (cDV) Calabi-Yau threefold singularities. By viewing these singularities as ADE surface fibrations over the complex $w$-plane, we encode their geometry in a Higgs field $Φ(w)$. A…
  • Fluctuation engineering in cavity quantum materials
    Hope M Bretscher, Lorenzo Graziotto, Marios H Michael, Angela Montanaro, I-Te Lu, Andrey Grankin, James W McIver, Jerome Faist, Daniele Fausti, Martin Eckstein, Michael Ruggenthaler, Angel Rubio, DN Basov, Mohammad Hafezi, Martin Claassen, Dante M Kennes, Michael A Sentef
    9 April 2026
    Coupling tailored electromagnetic fluctuations to materials provides a resource for controlling correlated quantum matter. By structuring the frequency, spatial, and modal distribution of fluctuations through a new generation of cavity quantum materials, vacuum and thermal…
  • Perceptual misalignment of texture representations in convolutional neural networks
    Ludovica de Paolis, Fabio Anselmi, Alessio Ansuini, Eugenio Piasini
    1 April 2026
    Mathematical modeling of visual textures traces back to Julesz's intuition that texture perception in humans is based on local correlations between image features. An influential approach for texture analysis and generation generalizes this notion to linear correlations between…
  • Crossover and Critical Behavior in the Layered XY Model
    Roman Kracht, Andrea Trombettoni, Ilaria Maccari, Nicolò Defenu
    19 March 2026
    Motivated by the interplay between 2D and 3D scaling signatures observed in unconventional layered superconductors, we present a systematic Monte Carlo study of the three-dimensional classical XY model with anisotropic in-plane $J_\parallel$ and inter-plane $J_\perp$ couplings.…
  • Quantum Dynamical Entropy and Dissipative Information Flows
    Giovanni Nichele, Fabio Benatti
    14 March 2026
    The Alicki-Lindblad-Fannes dynamical (ALF) entropy measures the rate at which new information is gathered about a quantum system by inspecting its long-time evolution. We propose an extension of the ALF entropy to open quantum dynamics as a measure of back-flow of information…
  • Quantum Dynamical Entropy and non-Markovianity: a collisional model perspective
    Giovanni Nichele, Fabio Benatti
    14 March 2026
    Accessing the physical mechanisms behind non-Markovian phenomena in open quantum dynamics requires the study of the statistical properties of the joint system-environment dynamics. This is impossible at the level of the reduced dynamics of the open system alone as the latter is…
  • Testing the unitarity of the light neutrino mixing matrix
    E. Gabrielli, A. Lind, L. Marzola, K. Müürsepp, E. Nardi
    12 March 2026
    We propose a novel test of the unitarity of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix at collider experiments. Our approach exploits the incomplete cancellation between $t$-channel neutrino exchange and $s$-channel gauge-boson contributions that arises in the…
  • Quantum foundations for quantum technologies in the International Year of Quantum (2025)
    Angelo Bassi
    4 March 2026
    From the very beginning, Quantum Mechanics has been accompanied by crucial foundational questions: the possibility of visualizing physical processes, the limits of measurement epitomized by the Heisenberg uncertainty principle, the existence of a deeper underlying reality with…
  • Zigzag Persistence of Neural Responses to Time-Varying Stimuli
    Yuri Gardinazzi, Alessio Ansuini, Eugenio Piasini, Fabio Anselmi, Matteo Biagetti
    3 March 2026
    We use topological data analysis to study neural population activity in the Sensorium 2023 dataset, which records responses from thousands of mouse visual cortex neurons to diverse video stimuli. For each video, we build frame-by-frame cubical complexes from neuronal activity…
  • Electronic structure of Graphene/Co interfaces
    Daniela Pacilé, Simone Lisi, Iolanda Di Bernardo, M. Papagno, L. Ferrari, Michele Pisarra, Marco Caputo, S. K. Mahatha, P. M. Sheverdyaeva, P. Moras, P. Lacovig, Silvano Lizzit, Alessandro Baraldi, Maria Grazia Betti, Carlo Carbone
    23 February 2026
    Photoemission, from core levels and valence band, and low-energy electron diffraction (LEED) have been employed to investigate the electronic and structural properties of novel graphene-ferromagnetic (G-FM) systems,obtained by intercalation of one mono-layer (1ML) and several…
  • The rise and fall of an oxide: insights into the phase diagram of bismuth oxide on Au(111)
    Alberto Turoldo, Marco Bianchi, Alessandro Baraldi, Silvano Lizzit
    18 February 2026
    Bismuth oxide (Bi$_2$O$_3$) is a polymorphic material of considerable technological interest, with applications spanning from heterogeneous catalysis to next-generation nanoelectronics. Despite its relevance, systematic investigations of Bi$_2$O$_3$ thin films remain scarce.…
  • Quantum Entanglement and Bell Nonlocality at Future Lepton Collider
    Emidio Gabrielli, Luca Marzola
    3 February 2026
    Quantum entanglement and Bell nonlocality–cornerstones of quantum mechanics–have traditionally been investigated only in low-energy experimental settings. Only recently, these fundamental phenomena have come to be explored in the high-energy domain of particle physics, where…
  • Direct observation of the optical Magnus effect with a trapped ion
    Philip Leindecker, Louis P. H. Gallagher, Edgar Brucke, Dominique Zehnder, Luka Milanovic, Matteo Marinelli, Rene Gerritsma, Robert J. C. Spreeuw, Jonathan Home, Cornelius Hempel
    30 January 2026
    We directly observe and spatially map an optical analog of the Magnus effect, where intrinsic spin-orbit-like coupling of light generates a spin-dependent transverse displacement of the atom-light interaction profile for a $^{40}$Ca$^+$ ion. Probed on a quadrupole transition…
  • The $O(n\to\infty)$ Rotor Model and the Quantum Spherical Model on Graphs
    Nikita Titov, Andrea Trombettoni
    20 January 2026
    We show that the large $n$ limit of the $O(n)$ quantum rotor model defined on a general graph has the same critical behavior as the corresponding quantum spherical model and that the critical exponents depend solely on the spectral dimension $d_s$ of the graph. To this end, we…
  • Understanding and inverse design of implicit bias in stochastic learning: a geometric perspective
    Nicola Aladrah, Emanuele Ballarin, Matteo Biagetti, Alessio Ansuini, Alberto d'Onofrio, Fabio Anselmi
    10 January 2026
    A key challenge in machine learning is to explain how learning dynamics select among the many solutions that achieve identical loss values in overparameterized models – a phenomenon known as implicit bias. Controlling this bias provides a direct mechanism on learned…
  • Ultracold Quantum Gravimeters: An Introduction for Geophysicists
    Ivaldevingles Rodrigues De Souza Junior, Andrea Trombettoni, Carla Braitenberg
    2 January 2026
    This paper aims at providing an accessible introduction to ultracold quantum gravimeters tailored for geophysicists. We do not focus here on geophysical applications, as these are already well known to geophysicists, but rather provide a pedagogical exposition of the…
  • Non-toric 5d SCFTs from Reid's Pagoda
    Andrés Collinucci, Fabrizio Del Monte, Mario De Marco, Marina Moleti, Roberto Valandro
    21 December 2025
    We construct new families of non-toric 5d SCFTs via abelian orbifolds of the Reid Pagoda, including a surprising infinite family of rank-1 theories, that evade all known classifications. Using the McKay correspondence, we derive their BPS quivers and superpotentials. The…
  • The Lattice Schwinger Model and Its Quantum Simulation
    Joao C. Pinto Barros, Pierpaolo Fontana, Pasquale Sodano, Andrea Trombettoni
    12 December 2025
    In this chapter we review results on the lattice Schwinger model. In par-ticular, we show how the effect of the anomaly is reproduced on the lattice. We connect these results to recent developments in the field of quantum simulation of interacting field theories. Schemes for the…
  • Insensitivity points and performance of open quantum interferometers under number-conserving & non-conserving Lindblad dynamics
    Tommaso Favalli, Žan Kokalj, Andrea Trombettoni
    11 December 2025
    We investigate the phase sensitivity of a linear two-mode atom interferometer subject to environmental noise, modeled within the framework of open quantum systems with both number-conserving and non-conserving Lindblad operators. Considering several input states, we first study…
  • Triangular $J_1$-$J_2$ Heisenberg Antiferromagnet in a Magnetic Field
    Thomas Bader, Shi Feng, Sasank Budaraju, Federico Becca, Johannes Knolle, Frank Pollmann
    9 December 2025
    The behavior of the paradigmatic $J_1-J_2$ triangular lattice Heisenberg antiferromagnet in a magnetic field remains unsettled despite decades of study. We map out the phase diagram using three complementary approaches, including self-consistent nonlinear spin-wave theory,…
  • On the Emergence of Time and Space in Closed Quantum Systems
    Tommaso Favalli
    8 December 2025
    Time, space and entanglement are the main characters in this work. Their nature is still a great mystery in physics and we study here the possibility that these three phenomena are closely connected, showing how entanglement can be at the basis of the emergence of time and space…
  • Measuring CP violation using quantum state tomography
    M. Fabbrichesi, R. Floreanini, E. Gabrielli, L. Marzola
    8 December 2025
    We investigate direct CP violation in neutral meson decays by reconstructing the associated density matrices and measuring their difference using the trace distance. Our results cover neutral kaon decays into two scalar triplets of isospin space, specifically the pions, and…
  • Phase diagram of the one-dimensional three-state Potts model with an additional mean-field interaction
    Alessandro Campa, Vahan Hovhannisyan, Stefano Ruffo, Andrea Trombettoni
    2 December 2025
    We derive the phase diagram of the one-dimensional three-state Potts model with an additional mean-field interaction in the canonical ensemble. The free energy is obtained by mapping the model onto the spin-$1$ Blume-Emery-Griffiths model and solving it by using an…
  • Effect of Energy Extensivity on the Performance of Open Quantum Interferometers
    Žan Kokalj, Tommaso Favalli, Andrea Trombettoni
    27 November 2025
    Studying the performance of a quantum interferometer coupled to an external environment is a problem of conceptual and practical importance. If we consider a quantum interferometer featuring Heisenberg-limited sensitivity, then a typical result is that introducing coupling with…
  • From Laplacian-to-Adjacency Matrix for Continuous Spins on Graphs
    Nikita Titov, Andrea Trombettoni
    15 November 2025
    The study of spins and particles on graphs has broad applications, from the dynamics of interacting systems on networks to combinatorial problems. Here, we study the large-$n$ limit of the $O(n)$ model on graphs, which is considerably more challenging than on regular lattices,…
  • Angular momentum of rotating fermionic superfluids by Sagnac phonon interferometry
    Marcia Frómeta Fernández, Diego Hernández Rajkov, Giulia Del Pace, Nicola Grani, Massimo Inguscio, Francesco Scazza, Sandro Stringari, Giacomo Roati
    4 November 2025
    Fermionic many-body systems provide an unrivaled arena to investigate how interactions drive the emergence of collective quantum behavior, such as macroscopic coherence and superfluidity. Central to these phenomena is the formation of Cooper pairs, correlated states of two…
  • Pseudo quantum advantages in perceptron storage capacity
    Fabio Benatti, Masoud Gharahi, Giovanni Gramegna, Stefano Mancini, Vincenzo Parisi
    2 November 2025
    We investigate a generalized quantum perceptron architecture characterized by an oscillating activation function with a tunable frequency ranging from zero to infinity. Employing analytical techniques from statistical mechanics, we derive the optimal storage capacity and…
  • Open harmonic chain without secular approximation
    Melika Babakan, Fabio Benatti, Laleh Memarzadeh
    26 October 2025
    We study particle and energy transport in an open quantum system consisting of a three harmonic oscillator chain coupled to thermal baths at different temperatures placed at the ends of the chain. We consider the exact dynamics of the open chain and its so-called local and…
  • Mitigating Coherent Errors through a Decoherence-Resistant Variational Framework employing Stabilizer State
    Giovanni Di Bartolomeo, Giulio Crognaletti, Angelo Bassi, Michele Vischi
    23 October 2025
    Stabilizer states are a central resource in quantum information processing, underpinning a wide range of applications. While they can be efficiently generated via Clifford circuits, the presence of coherent errors, such as small-angle miscalibrations in native gate…
  • One-dimensional long-range Ising model: two (almost) equivalent approximations
    Valerio Pagni, Guido Giachetti, Andrea Trombettoni, Nicolò Defenu
    2 October 2025
    We investigate the critical behavior of the one-dimensional Ising model with long-range interactions using the functional renormalization group in the local potential approximation (LPA), and compare our findings with Dyson's hierarchical model (DHM). While the DHM lacks…
  • Probability-Phase Mutual Information
    Cameron Hahn, Nishan Ranabhat, Fabio Anza
    1 October 2025
    Quantum coherence is an exquisitely quantum phenomenon that depends on both probability amplitudes and relative phases. Standard coherence measures quantify superposition within density matrices but cannot distinguish ensembles that produce the same mixed state through different…
  • Direct measurement of coherent nodal and antinodal dynamics in underdoped Bi-2212
    Rishabh Mishra, Jonathan O. Tollerud, Paolo Franceschini, Nikolas Stavrias, Fabio Boschini, Genda Gu, Andrea Damascelli, Daniele Fausti, Jared H. Cole, Claudio Giannetti, Jeffrey A. Davis
    23 September 2025
    The physics of strongly correlated materials is deeply rooted in electron interactions and their coupling to low-energy excitations. Unraveling the competing and cooperative nature of these interactions is crucial for connecting microscopic mechanisms to the emergence of exotic…
  • Particle Collisions & Quantum Entanglement in High-Energy Collisions
    Emidio Gabrielli
    9 September 2025
    The exploration of fundamental quantum phenomena, such as entanglement and Bell inequality violations$-$extensively studied in low-energy regimes$-$has recently extended to high-energy particle collisions. Experimentally, Bell inequality violations, which challenge Einstein's…
  • Few is different: deciphering many-body dynamics in mesoscopic quantum gases
    Juergen Berges, Sandra Brandstetter, Jasmine Brewer, Georg Bruun, Tilman Enss, Stefan Floerchinger, Keisuke Fujii, Maciej Galka, Giuliano Giacalone, Qingze Guan, Carl Heintze, Lars H. Heyen, Ilya Selyuzhenkov, Selim Jochim, Jesper Levinsen, Philipp Lunt, Silvia Masciocchi, Aleksas Mazeliauskas, Nir Navon, Alice Ohlson, Meera Parish, Stephanie M. Reimann, Francesco Scazza, Thomas Schaefer, Derek Teaney, Joseph Thywissen, Raju Venugopalan, Yangqian Yan, Matteo Zaccanti, Torsten V. Zache
    5 September 2025
    Emergent macroscopic descriptions of matter, such as hydrodynamics, are central to our description of complex physical systems across a wide spectrum of energy scales. The conventional understanding of these many-body phenomena has recently been shaken by a number of…
  • Spontaneous Collapse Models
    Matteo Carlesso, Sandro Donadi
    26 August 2025
    Collapse models are phenomenological models introduced to solve the measurement problem in quantum mechanics. They modify the Schr\"odinger equation by adding non-linear and stochastic terms, which induce the wavefunction collapse in space. The collapse effects are negligible…
  • Quantum spacetime from constraints: wave equations and fields
    Tommaso Favalli
    18 August 2025
    In previous works, we showed that both time and space can emerge from entanglement within a globally constrained quantum Universe, with no background coordinates. By extending the Page and Wootters quantum time formalism to include both quantum clocks and rods, and imposing…
  • On thermalization of a system with discrete phase space
    A. Imparato
    4 August 2025
    We investigate the thermalization of a stochastic system with discrete phase space, initially at equilibrium at temperature $T_i$ and then termalizing in an environment at temperature $T_f$ , considering both cases $T_i > T_f$ and $T_i < T_f$. For the simple case of a system…
  • Impact of quantum coherence on the dynamics and thermodynamics of quenched free fermions coupled to a localized defect
    Beatrice Donelli, Gabriele De Chiara, Francesco Scazza, Stefano Gherardini
    2 August 2025
    We investigate the non-equilibrium quantum dynamics and thermodynamics of free fermions suddenly coupled to a localized defect in a one-dimensional harmonic trap. This setup realizes a quantum quench transformation that gives rise to the orthogonalization of the system's…
  • Broken Detailed Balance and Entropy Production in CPTP Quantum Brownian Motion
    Simone Artini, Gabriele Lo Monaco, Alberto Imparato, Mauro Paternostro, Sandro Donadi
    31 July 2025
    We rigorously analyze the non-equilibrium thermodynamic behavior of various formulations of quantum Brownian motion (QBM) using the framework of stochastic thermodynamics. While the widely used Caldeira-Leggett master equation exhibits desirable thermodynamic features, such as…
  • Non-classicality at equilibrium and efficient predictions under non-commuting charges
    Lodovico Scarpa, Nishan Ranabhat, Amit Te'eni, Abdulla Alhajri, Vlatko Vedral, Fabio Anza, Luis Pedro García-Pintos
    30 July 2025
    A quantum thermodynamic system can conserve non-commuting observables, but the consequences of this phenomenon on relaxation are still not fully understood. We investigate this problem by leveraging an observable-dependent approach to equilibration and thermalization in isolated…
  • Orthogonalization speed-up from quantum coherence after a sudden quench
    Beatrice Donelli, Gabriele De Chiara, Francesco Scazza, Stefano Gherardini
    28 July 2025
    We introduce a nonequilibrium phenomenon, reminiscent of Anderson's orthogonality catastrophe (OC), that arises in the transient dynamics following an interaction quench between a quantum system and a localized defect. Even if the system comprises only a single particle, the…
  • Vortices in dipolar condensates of interlayer excitons
    Sara Conti, Andrey Chaves, Luis A. Pena Ardila, David Neilson, Milorad V. Milosevic
    21 July 2025
    Recently observed signatures of Bose-Einstein condensation and superfluidity of dipolar excitons have drawn enormous attention to excitonic semiconductor bilayers. In superfluids, stabilization and observation of vortex matter is usually a decisive proof of coherent condensation…
  • Towards relativistic generalization of collapse models
    Anirudh Gundhi, Lajos Diósi, Matteo Carlesso
    9 July 2025
    Spontaneous collapse models provide a possible, testable solution to the quantum measurement problem. While experiments are providing increasingly stronger bounds on their parameters, a full-fledged relativistic extension is still missing. Previous attempts have encountered…
  • Enhancement of the effects due to the Schrödinger-Newton equation
    Davide Giordano Ario Altamura, José Luis Gaona-Reyes, Elliot Simcox, Hendrik Ulbricht, Angelo Bassi
    3 July 2025
    The Schrödinger-Newton (SN) equation introduces a nonlinear self-gravitational term to the standard Schrödinger equation, offering a paradigmatic model for semiclassical gravity. However, the small deviations it predicts from standard quantum mechanics pose significant…
  • Microsecond-scale high-survival and number-resolved detection of ytterbium atom arrays
    Alessandro Muzi Falconi, Riccardo Panza, Sara Sbernardori, Riccardo Forti, Ralf Klemt, Omar Abdel Karim, Matteo Marinelli, Francesco Scazza
    1 July 2025
    Scalable atom-based quantum platforms for simulation, computing, and metrology require fast high-fidelity, low-loss imaging of individual atoms. Standard fluorescence detection methods rely on continuous cooling, limiting the detection range to one atom and imposing long imaging…
  • Quantum pions
    M. Fabbrichesi, R. Floreanini, E. Gabrielli, L. Marzola
    5 June 2025
    We show that two- and three-pion states produced in the decay of neutral kaons are contextual, entangled, and Bell nonlocal in isospin space. By reinterpreting the experimental values of the different isospin amplitudes, we can determine the amount of entanglement enjoyed by…
  • A many-body marker for three-dimensional topological insulators with inversion symmetry
    Federico Becca, Alberto Parola
    25 May 2025
    We extend the previously defined many-body marker for two-dimensional $\mathbb{Z}_2$ topological insulators [I. Gilardoni {\it et al.}, Phys. Rev. B {\bf 106}, L161106 (2022)] to distinguish trivial, weak-, and strong-topological insulators in three dimensions, in presence of…
  • An open harmonic chain: Exact vs global and local reduced dynamics
    Melika Babakan, Fabio Benatti, Laleh Memarzadeh
    22 May 2025
    In the following, we study the dissipative time-evolution of a quantum chain consisting of three coupled harmonic oscillators, the first and third of which weakly interact quadratically with two independent thermal baths in equilibrium at different temperatures. Due to the…
  • Engineering the Kondo impurity problem with alkaline-earth atom arrays
    Adriano Amaricci, Andrea Richaud, Massimo Capone, Nelson Darkwah Oppong, Francesco Scazza
    20 May 2025
    We propose quantum simulation experiments of the Kondo impurity problem using cold alkaline-earth(-like) atoms (AEAs) in a combination of optical lattice and optical tweezer potentials. Within an ab initio model for atomic interactions in the optical potentials, we analyze…
  • Agentic publications: redesigning scientific publishing in the age of thinking large language models
    Roberto Pugliese, George Kourousias, Francesco Venier, Grazia Garlatti Costa
    19 May 2025
    Purpose: This paper introduces the concept of "Agentic Publication," a novel LLM-driven framework designed to complement traditional scientific publishing by transforming papers into interactive knowledge systems that address challenges created by exponential growth in…
  • Single-atom imaging of ${}^{173}$Yb in optical tweezers loaded by a five-beam magneto-optical trap
    Omar Abdel Karim, Alessandro Muzi Falconi, Riccardo Panza, Wenliang Liu, Francesco Scazza
    12 May 2025
    We report on the trapping and imaging of individual ytterbium atoms in arrays of optical tweezers, loaded from a magneto-optical trap (MOT) formed by only five beams in an orthogonal configuration. In our five-beam MOT, operating on the narrow ${}^1$S${}_0 \rightarrow…
  • Tests of quantum contextuality in particle physics
    M. Fabbrichesi, R. Floreanini, E. Gabrielli, L. Marzola
    16 April 2025
    Quantum contextuality refers to the impossibility of assigning a predefined, intrinsic value to a physical property of a system independently of the context in which the property is measured. It is, perhaps, the most fundamental feature of quantum mechanics. The many states with…
  • Relativistic limits on the discretization and temporal resolution of a quantum clock
    Tommaso Favalli
    8 April 2025
    We provide a brief discussion regarding relativistic limits on the discretization and temporal resolution of time values in a quantum clock. Our clock is characterized by a time observable chosen to be the complement of a bounded and discrete Hamiltonian which can have an…
  • Quantum Information meets High-Energy Physics: Input to the update of the European Strategy for Particle Physics
    Yoav Afik, Federica Fabbri, Matthew Low, Luca Marzola, Juan Antonio Aguilar-Saavedra, Mohammad Mahdi Altakach, Nedaa Alexandra Asbah, Yang Bai, Hannah Banks, Alan J. Barr, Alexander Bernal, Thomas E. Browder, Paweł Caban, J. Alberto Casas, Kun Cheng, Frédéric Déliot, Regina Demina, Antonio Di Domenico, Michał Eckstein, Marco Fabbrichesi, Benjamin Fuks, Emidio Gabrielli, Dorival Gonçalves, Radosław Grabarczyk, Michele Grossi, Tao Han, Timothy J. Hobbs, Paweł Horodecki, James Howarth, Shih-Chieh Hsu, Stephen Jiggins, Eleanor Jones, Andreas W. Jung, Andrea Helen Knue, Steffen Korn, Theodota Lagouri, Priyanka Lamba, Gabriel T. Landi, Haifeng Li, Qiang Li, Ian Low, Fabio Maltoni, Josh McFayden, Navin McGinnis, Roberto A. Morales, Jesús M. Moreno, Juan Ramón Muñoz de Nova, Giulia Negro, Davide Pagani, Giovanni Pelliccioli, Michele Pinamonti, Laura Pintucci, Baptiste Ravina, Alim Ruzi, Kazuki Sakurai, Ethan Simpson, Maximiliano Sioli, Shufang Su, Sokratis Trifinopoulos, Sven E. Vahsen, Sofia Vallecorsa, Alessandro Vicini, Marcel Vos, Eleni Vryonidou, Chris D. White, Martin J. White, Andrew J. Wildridge, Tong Arthur Wu, Laura Zani, Yulei Zhang, Knut Zoch
    31 March 2025
    Some of the most astonishing and prominent properties of Quantum Mechanics, such as entanglement and Bell nonlocality, have only been studied extensively in dedicated low-energy laboratory setups. The feasibility of these studies in the high-energy regime explored by particle…
  • Mutual friction and vortex Hall angle in a strongly interacting Fermi superfluid
    Nicola Grani, Diego Hernández-Rajkov, Cyprien Daix, Pierbiagio Pieri, Michele Pini, Piotr Magierski, Gabriel Wlazłowski, Marcia Frómeta Fernández, Francesco Scazza, Giulia Del Pace, Giacomo Roati
    27 March 2025
    The motion of a quantized vortex is intimately connected with its microscopic structure and the elementary excitations of the surrounding fluid. In this work, we investigate the two-dimensional motion of a single vortex orbiting a pinned anti-vortex in a unitary Fermi superfluid…
  • Sterile-neutrino search based on 259 days of KATRIN data
    Himal Acharya, Max Aker, Dominic Batzler, Armen Beglarian, Justus Beisenkötter, Matteo Biassoni, Benedikt Bieringer, Yanina Biondi, Matthias Böttcher, Beate Bornschein, Lutz Bornschein, Marco Carminati, Auttakit Chatrabhuti, Suren Chilingaryan, Deseada Díaz Barrero, Byron A. Daniel, Martin Descher, Otokar Dragoun, Guido Drexlin, Frank Edzards, Klaus Eitel, Enrico Ellinger, Ralph Engel, Sanshiro Enomoto, Luca Fallböhmer, Arne Felden, Caroline Fengler, Carlo Fiorini, Joseph A. Formaggio, Christian Forstner, Florian M. Fränkle, Giulio Gagliardi, Kevin Gauda, Andrew S. Gavin, Woosik Gil, Ferenc Glück, Robin Grössle, Thomas Höhn, Khushbakht Habib, Volker Hannen, Leonard Haßelmann, Klaus Helbing, Hanna Henke, Svenja Heyns, Roman Hiller, David Hillesheimer, Dominic Hinz, Alexander Jansen, Christoph Köhler, Khanchai Khosonthongkee, Joshua Kohpeiß, Leonard Köllenberger, Andreas Kopmann, Neven Kovač, Luisa La Cascio, Leo Laschinger, Thierry Lasserre, Joscha Lauer, Thanh-Long Le, Ondřej Lebeda, Bjoern Lehnert, Alexey Lokhov, Moritz Machatschek, Alexander Marsteller, Eric L. Martin, Kirsten McMichael, Christin Melzer, Lukas Erik Mettler, Susanne Mertens, Shailaja Mohanty, Jalal Mostafa, Immanuel Müller, Andrea Nava, Holger Neumann, Simon Niemes, Irene Nutini, Anthony Onillon, Diana S. Parno, Maura Pavan, Udomsilp Pinsook, Jan Plößner, Alan W. P. Poon, Jose Manuel Lopez Poyato, Florian Priester, Jan Ráliš, Marco Röllig, Shivani Ramachandran, R G. Hamish Robertson, Caroline Rodenbeck, Rudolf Sack, Alejandro Saenz, Richard Salomon, Jannis Schürmann, Peter Schäfer, Ann-Kathrin Schütz, Magnus Schlösser, Lisa Schlüter, Sonja Schneidewind, Ulrich Schnurr, Alessandro Schwemmer, Adrian Schwenck, Michal Šefčík, Jakkapat Seeyangnok, Daniel Siegmann, Frank Simon, Julanan Songwadhana, Felix Spanier, Daniela Spreng, Warintorn Sreethawong, Markus Steidl, Jaroslav Štorek, Xaver Stribl, Michael Sturm, Narumon Suwonjandee, Nicholas Tan Jerome, Helmut H. H. Telle, Thomas Thümmler, Larisa A. Thorne, Nikita Titov, Igor Tkachev, Kerstin Trost, Korbinian Urban, Drahoš Vénos, Kathrin Valerius, Sascha Wüstling, Christian Weinheimer, Stefan Welte, Jürgen Wendel, Christoph Wiesinger, John F. Wilkerson, Joachim Wolf, Johanna Wydra, Weiran Xu, Sergey Zadorozhny, Genrich Zeller
    24 March 2025
    Neutrinos are the most abundant fundamental matter particles in the Universe and play a crucial role in particle physics and cosmology. Neutrino oscillation, discovered about 25 years ago, reveals that the three known species mix with each other. Anomalous results from reactor…
  • Tracking the photoinduced dynamics of a dark excitonic state in single-layer WS$_2$ via resonant Autler-Townes splitting
    Angela Montanaro, Francesco Valiera, Francesca Giusti, Francesca Fassioli, Chiara Trovatello, Giacomo Jarc, Enrico Maria Rigoni, Fang Liu, Xiaoyang Zhu, Stefano Dal Conte, Giulio Cerullo, Martin Eckstein, Daniele Fausti
    24 March 2025
    Excitons in a monolayer transition metal dichalcogenide (1L-TMD) are highly bound states characterized by a Rydberg-like spectrum of discrete energy levels. Among these, states with odd-parity are known as dark excitons due to selection rules, which make their stationary and…
  • Quantum contextuality of spin-1 massive particles
    M. Fabbrichesi, R. Floreanini, E. Gabrielli, L. Marzola
    18 March 2025
    Contextuality is a fundamental property of quantum mechanics. Contrary to entanglement, which can only exist in composite systems, contextuality is also present for single entities. The case of a three-level system is of particular interest because–in agreement with the…
  • The Spectral Bias of Shallow Neural Network Learning is Shaped by the Choice of Non-linearity
    Justin Sahs, Ryan Pyle, Fabio Anselmi, Ankit Patel
    13 March 2025
    Despite classical statistical theory predicting severe overfitting, modern massively overparameterized neural networks still generalize well. This unexpected property is attributed to the network's so-called implicit bias, which describes its propensity to converge to solutions…
  • Mean Field Approaches to Lattice Gauge Theories: A Review
    Pierpaolo Fontana, Andrea Trombettoni
    28 February 2025
    Due to their broad applicability, gauge theories (GTs) play a crucial role in various areas of physics, from high-energy physics to condensed matter. Their formulations on lattices, lattice gauge theories (LGTs), can be studied, among many other methods, with tools coming from…
  • Theoretical Limits of Protocols for Distinguishing Different Unravelings
    J. L. Gaona-Reyes, D. G. A. Altamura, A. Bassi
    26 February 2025
    Stochastic unravelings of Lindblad-type master equations, such as stochastic Schrödinger equations (SSEs), provide powerful tools to model open quantum systems and continuous measurement processes. The same master equation can be unraveled in different ways; while these…
  • Foundation Neural-Networks Quantum States as a Unified Ansatz for Multiple Hamiltonians
    Riccardo Rende, Luciano Loris Viteritti, Federico Becca, Antonello Scardicchio, Alessandro Laio, Giuseppe Carleo
    13 February 2025
    Foundation models are highly versatile neural-network architectures capable of processing different data types, such as text and images, and generalizing across various tasks like classification and generation. Inspired by this success, we propose Foundation Neural-Network…
  • Transport of ultracold dipolar fermions in one-dimensional optical lattices
    Barnali Chakrabarti, N D Chavda, Andrea Trombettoni, Arnaldo Gammal
    10 February 2025
    We investigate the transport properties in out-of-equilibrium dynamics of strongly correlated dipolar fermions initially localized in one-dimensional inhomogeneous optical lattice. The dynamics is studied by experimentally measurable dynamical variables such as one-body density,…
  • Hybrid Classical-Quantum Newtonian Gravity with stable vacuum
    Nicolò Piccione, Angelo Bassi
    7 February 2025
    We investigate the Gravitational Poissonian Spontaneous Localization (GPSL) model, a hybrid classical-quantum model in which classical Newtonian gravity emerges from stochastic collapses of the mass density operator, and consistently couples to quantum matter. Unlike models…
  • Hierarchical Generation and Design of Tree-Codes for Resource-Efficient Loss-Tolerant Quantum Communications
    Francesco Cesa, Tommaso Feri, Angelo Bassi
    30 January 2025
    We develop protocols for generating loss-tolerant quantum tree-codes; these are designed to safeguard information against qubit losses, with wide applications in quantum communications. Contrary to previous proposals, our method enables top-to-bottom fast encoding and decoding,…
  • Measuring Decoherence Due to Quantum Vacuum Fluctuations
    Anirudh Gundhi, Hendrik Ulbricht
    29 January 2025
    The interaction of a particle with vacuum fluctuations–which theoretically exist even in the complete absence of matter–can lead to observable irreversible decoherence if it were possible to switch on and off the particle charge suddenly. We compute the leading order…
  • Exploring the Effects of Mass Dependence in Spontaneous Collapse Models
    Nicolò Piccione, Angelo Bassi
    29 January 2025
    Spontaneous collapse models aim to solve the long-standing measurement problem in quantum mechanics by modifying the theory's dynamics to include objective wave function collapses. These collapses occur randomly in space, bridging the gap between quantum and classical behavior.…
  • Entanglement in Markovian hybrid classical-quantum theories of gravity
    Oliviero Angeli, Matteo Carlesso
    27 January 2025
    Markovian master equations underlie many areas of modern physics and, despite their apparent simplicity, they encode a rich and complex dynamics which is still under active research. We identify a class of continuous variable Markovian master equations for which positivity and…
  • Probing the Quantum Nature of Gravity through Classical Diffusion
    Oliviero Angeli, Sandro Donadi, Giovanni Di Bartolomeo, José Luis Gaona-Reyes, Andrea Vinante, Angelo Bassi
    22 January 2025
    The question of whether gravity is fundamentally quantum remains one of the deepest open problems in modern physics. A recently explored approach consists of testing gravity's ability to entangle quantum systems, which requires preparing and controlling massive quantum states -…
  • Improved bounds on collapse models from rotational noise of LISA Pathfinder
    Davide Giordano Ario Altamura, Andrea Vinante, Matteo Carlesso
    15 January 2025
    Spontaneous wavefunction collapse models offer a solution to the quantum measurement problem, by modifying the Schrödinger equation with nonlinear and stochastic terms. The Continuous Spontaneous Localisation (CSL) model is the most studied among these models, with…
  • Local vs non-local dynamics in cavity-coupled Rydberg atom arrays
    Zeno Bacciconi, Hernan B. Xavier, Matteo Marinelli, Devendra Singh Bhakuni, Marcello Dalmonte
    8 January 2025
    Locality is a transversal principle that governs quantum dynamics of many-body systems. However, for cavity embedded systems, such fundamental notion is hindered by the presence of non-local cavity modes, leaving space for new possible dynamical behaviors. Here, we investigate…
  • Terrestrial Very-Long-Baseline Atom Interferometry: Summary of the Second Workshop
    Adam Abdalla, Mahiro Abe, Sven Abend, Mouine Abidi, Monika Aidelsburger, Ashkan Alibabaei, Baptiste Allard, John Antoniadis, Gianluigi Arduini, Nadja Augst, Philippos Balamatsias, Antun Balaz, Hannah Banks, Rachel L. Barcklay, Michele Barone, Michele Barsanti, Mark G. Bason, Angelo Bassi, Jean-Baptiste Bayle, Charles F. A. Baynham, Quentin Beaufils, Slyan Beldjoudi, Aleksandar Belic, Shayne Bennetts, Jose Bernabeu, Andrea Bertoldi, Clara Bigard, N. P. Bigelow, Robert Bingham, Diego Blas, Alexey Bobrick, Samuel Boehringer, Aleksandar Bogojevic, Kai Bongs, Daniela Bortoletto, Philippe Bouyer, Christian Brand, Oliver Buchmueller, Gabriela Buica, Sergio Calatroni, Lo Calmels, Priscilla Canizares, Benjamin Canuel, Ana Caramete, Laurentiu-Ioan Caramete, Matteo Carlesso, John Carlton, Samuel P. Carman, Andrew Carroll, Mateo Casariego, Minoas Chairetis, Vassilis Charmandaris, Upasna Chauhan, Jiajun Chen, Maria Luisa, Chiofalo, Donatella Ciampini, Alessia Cimbri, Pierre Clad, Jonathon Coleman, Florin Lucian Constantin, Carlo R. Contaldi, Robin Corgier, Bineet Dash, G. J. Davies, Claudia de Rham, Albert De Roeck, Daniel Derr, Soumyodeep Dey, Fabio Di Pumpo, Goran S. Djordjevic, Babette Doebrich, Peter Dornan, Michael Doser, Giannis Drougakis, Jacob Dunningham, Alisher Duspayev, Sajan Easo, Joshua Eby, Maxim Efremov, Gedminas Elertas, John Ellis, Nicholas Entin, Stephen Fairhurst, Mattia Fani, Farida Fassi, Pierre Fayet, Daniel Felea, Jie Feng, Robert Flack, Chris Foot, Tim Freegarde, Elina Fuchs, Naceur Gaaloul, Dongfeng Gao, Susan Gardner, Barry M. Garraway, Carlos L. Garrido Alzar, Alexandre Gauguet, Enno Giese, Patrick Gill, Gian F. Giudice, Eric P. Glasbrenner, Jonah Glick, Peter W. Graham, Eduardo Granados, Paul F. Griffin, Jordan Gue, Saida Guellati-Khelifa, Subhadeep Gupta, Vishu Gupta, Lucia Hackermueller, Martin Haehnelt, Timo Hakulinen, Klemens Hammerer, Ekim T. Hanimeli, Tiffany Harte, Sabrina Hartmann, Leonie Hawkins, Aurelien Hees, Alexander Herbst, Thomas M. Hird, Richard Hobson, Jason Hogan, Bodil Holst, Michael Holynski, Onur Hosten, Chung Chuan Hsu, Wayne Cheng-Wei Huang, Kenneth M. Hughes, Kamran Hussain, Gert Huetsi, Antonio Iovino, Maria-Catalina Isfan, Gregor Janson, Peter Jeglic, Philippe Jetzer, Yijun Jiang, Gediminas Juzeliunas, Wilhelm Kaenders, Matti Kalliokoski, Alex Kehagias, Eva Kilian, Carsten Klempt, Peter Knight, Soumen Koley, Bernd Konrad, Tim Kovachy, Markus Krutzik, Mukesh Kumar, Pradeep Kumar, Hamza Labiad, Shau-Yu Lan, Arnaud Landragin, Greg Landsberg, Mehdi Langlois, Bryony Lanigan, Christophe Le Poncin-Lafitte, Samuel Lellouch, Bruno Leone, Marek Lewicki, Yu-Hung Lien, Lucas Lombriser, Elias Lopez Asamar, J. Luis Lopez-Gonzalez, Adam Lowe, Chen Lu, Giuseppe Gaetano Luciano, Nathan Lundblad, Cristian de J. Lpez Monjaraz, Maena Mackoit-Sinkeviien, Michele Maggiore, Anirban Majumdar, Konstantinos Makris, Azadeh Maleknejad, Anna L. Marchant, Agnese Mariotti, Christos Markou, Barnaby Matthews, Anupam Mazumdar, Christopher McCabe, Matthias Meister, Giorgio Mentasti, Jonathan Menu, Giuseppe Messineo, Bernd Meyer-Hoppe, Salvatore Micalizio, Federica Migliaccio, Peter Millington, Milan Milosevic, Abhay Mishra, Jeremiah Mitchell, Gavin W. Morley, Noam Mouelle, Juergen Mueller, David Newbold, Wei-Tou Ni, Christian Niehof, Johannes Noller, Senad Odzak, Daniel K. L. Oi, Andreas Oikonomou, Yasser Omar, Chris Overstreet, Julia Pahl, Sean Paling, Zhongyin Pan, George Pappas, Vinay Pareek, Elizabeth Pasatembou, Mauro Paternostro, Vishal K. Pathak, Emanuele Pelucchi, Franck Pereira dos Santos, Achim Peters, Annie Pichery, Igor Pikovski, Apostolos Pilaftsis, Florentina-Crenguta Pislan, Robert Plunkett, Rosa Poggiani, Marco Prevedelli, Vishnupriya Puthiya Veettil, Johann Rafelski, Juhan Raidal, Martti Raidal, Ernst Maria Rasel, Sebastien Renaux-Petel, Andrea Richaud, Pedro Rivero-Antunez, Tangui Rodzinka, Albert Roura, Jan Rudolph, Dylan Sabulsky, Marianna S. Safronova, Mairi Sakellariadou, Leonardo Salvi, Muhammed Sameed, Sumit Sarkar, Patrik Schach, Stefan Alaric Schaeffer, Jesse Schelfhout, Manuel Schilling, Vladimir Schkolnik, Wolfgang P. Schleich, Dennis Schlippert, Ulrich Schneider, Florian Schreck, Ariel Schwartzman, Nico Schwersenz, Olga Sergijenko, Haifa Rejeb Sfar, Lijing Shao, Ian Shipsey, Jing Shu, Yeshpal Singh, Carlos F. Sopuerta, Marianna Sorba, Fiodor Sorrentino, Alessandro D. A. M Spallicci, Petruta Stefanescu, Nikolaos Stergioulas, Daniel Stoerk, Jannik Stroehle, Hrudya Thaivalappil Sunilkumar, Zoie Tam, Dhruv Tandon, Yijun Tang, Dorothee Tell, Jacques Tempere, Dylan J. Temples, Rohit P Thampy, Ingmari C. Tietje, Guglielmo M. Tino, Jonathan N. Tinsley, Ovidiu Tintareanu Mircea, Kimberly Tkalec, Andrew J. Tolley, Vincenza Tornatore, Alejandro Torres-Orjuela, Philipp Treutlein, Andrea Trombettoni, Christian Ufrecht, Juan Urrutia, Tristan Valenzuela, Linda R. Valerio, Maurits van der Grinten, Ville Vaskonen, Veronica Vazquez-Aceves, Hardi Veermae, Flavio Vetrano, Nikolay V. Vitanov, Wolf von Klitzing, Sebastian Wald, Thomas Walker, Reinhold Walser, Jin Wang, Yan Wang, C. A. Weidner, Andr Wenzlawski, Michael Werner, Lisa Woerner, Mohamed E. Yahia, Efe Yazgan, Emmanuel Zambrini Cruzeiro, M. Zarei, Mingsheng Zhan, Shengnan Zhang, Lin Zhou, Erik Zupanic
    19 December 2024
    This summary of the second Terrestrial Very-Long-Baseline Atom Interferometry (TVLBAI) Workshop provides a comprehensive overview of our meeting held in London in April 2024, building on the initial discussions during the inaugural workshop held at CERN in March 2023. Like the…
  • A high optical access cryogenic system for Rydberg atom arrays with a 3000-second trap lifetime
    Zhenpu Zhang, Ting-Wei Hsu, Ting You Tan, Daniel H. Slichter, Adam M. Kaufman, Matteo Marinelli, Cindy A. Regal
    13 December 2024
    We present an optical tweezer array of $^{87}$Rb atoms housed in an cryogenic environment that successfully combines a 4 K cryopumping surface, a <50 K cold box surrounding the atoms, and a room-temperature high-numerical-aperture objective lens. We demonstrate a 3000 s atom…
  • Polaronic dressing of bound states
    Luis A. Peña Ardila, Arturo Camacho-Guardian
    9 December 2024
    Polarons have emerged as a powerful concept across many-fields in physics to study an impurity coupled to a quantum bath. The interplay between impurity physics and the formation of composite objects remains a relevant problem to understand how few- and many-body states are…
  • Interaction-induced phases in the half-filled Bernevig-Hughes-Zhang model in one dimension
    Roberta Favata, Davide Piccioni, Alberto Parola, Federico Becca
    8 December 2024
    We explore the ground-state properties of a one-dimensional model with two orbitals per site, where, in addition to atomic energies $\pm M$, intra- and inter-orbital hoppings, the intra-orbital Hubbard ($U$) and nearest-neighbor density-density ($V$) repulsions are included. Our…
  • Lagrangian Homotopy Analysis Method using the Least Action Principle
    Gervais Nazaire Chendjou Beukam, Jean Pierre Nguenang, Stefano Ruffo, Andrea Trombettoni
    4 December 2024
    The Homotopy Analysis Method (HAM) is a powerful technique which allows to derive approximate solutions of both ordinary and partial differential equations. We propose to use a variational approach based on the Least Action Principle (LAP) in order to improve the efficiency of…
  • Superactivation of memory effects in a classical Markov environment
    Fabio Benatti, Giovanni Nichele
    26 November 2024
    We investigate a phenomenon known as Superactivation of Backflow of Information (SBFI); namely, the fact that the tensor product of a non-Markovian dynamics with itself exhibits Backflow of Information (BFI) from environment to system even if the single dynamics does not. Such…
  • Ultrafast pump-probe phase-randomized tomography
    Filippo Glerean, Enrico Maria Rigoni, Giacomo Jarc, Shahla Yasmin Mathengattil, Angela Montanaro, Francesca Giusti, Matteo Mitrano, Fabio Benatti, Daniele Fausti
    13 November 2024
    Measuring fluctuations in matter's low energy excitations is the key to unveil the nature of the nonequilibrium response of materials. A promising outlook in this respect is offered by spectroscopic methods that address matter fluctuations by exploiting the statistical nature of…