Senior Researcher
Research Interests:
Cold Atoms; Quantum Many-Body Physics; Quantum Simulation; Quantum Optics
Personal website:
www.units.it/arquslab
Selected publications:
Karim, O Abdel; Falconi, A Muzi; Panza, R; Liu, W; Scazza, Francesco
Single-atom imaging of <mml:math xmlns:mml= Journal Article
In: Quantum Sci. Technol., vol. 10, no. 4, 2025, ISSN: 2058-9565.
@article{AbdelKarim2025,
title = {Single-atom imaging of <mml:math xmlns:mml=},
author = {O Abdel Karim and A Muzi Falconi and R Panza and W Liu and Francesco Scazza},
doi = {10.1088/2058-9565/adf7cf},
issn = {2058-9565},
year = {2025},
date = {2025-12-01},
urldate = {2025-12-01},
journal = {Quantum Sci. Technol.},
volume = {10},
number = {4},
publisher = {IOP Publishing},
abstract = {<jats:title>Abstract</jats:title>
<jats:p>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 <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mn>1</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>S<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msub>
<mml:mrow/>
<mml:mn>0</mml:mn>
</mml:msub>
<mml:msup>
<mml:mo>→</mml:mo>
<mml:mn>3</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>P<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msub>
<mml:mrow/>
<mml:mn>1</mml:mn>
</mml:msub>
</mml:mrow>
</mml:math>
</jats:inline-formula> intercombination transition, gravity balances the radiation pressure of a single upward-directed beam. This approach enables efficient trapping and cooling of the most common ytterbium isotopes (<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>171</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb, <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>173</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb and <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>174</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb) to <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mrow>
<mml:mo>≲</mml:mo>
</mml:mrow>
<mml:mn>20</mml:mn>
<mml:mstyle scriptlevel="0"/>
<mml:mi>μ</mml:mi>
</mml:mrow>
</mml:math>
</jats:inline-formula>K at densities <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mrow>
<mml:mo>∼</mml:mo>
</mml:mrow>
<mml:msup>
<mml:mn>10</mml:mn>
<mml:mrow>
<mml:mn>11</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula> atoms cm<jats:sup>−3</jats:sup> within less than one second. This configuration allows for significantly reducing the complexity of the optical setup, potentially benefiting any ytterbium-atom based quantum science platform leveraging single-atom microscopy, from quantum processors to novel optical clocks. We then demonstrate the first single-atom-resolved imaging of the fermionic, large-spin isotope <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>173</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb (<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mi>I</mml:mi>
<mml:mo>=</mml:mo>
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</mml:mrow>
<mml:mn>2</mml:mn>
</mml:mrow>
</mml:math>
</jats:inline-formula>), employing a two-color imaging scheme that does not rely on magic-wavelength trapping. We achieve a high single-atom imaging fidelity of <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mn>99.96</mml:mn>
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<mml:mn>1</mml:mn>
<mml:mo stretchy="false">)</mml:mo>
<mml:mi mathvariant="normal">%</mml:mi>
</mml:mrow>
</mml:math>
</jats:inline-formula> and a large survival probability of <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mn>98.5</mml:mn>
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<mml:mn>2</mml:mn>
<mml:mo stretchy="false">)</mml:mo>
<mml:mi mathvariant="normal">%</mml:mi>
</mml:mrow>
</mml:math>
</jats:inline-formula>, despite large differential light shifts affecting all nuclear spin sublevels of the excited <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mn>3</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>P<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mn>1</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula> state involved in the cooling transition. The demonstrated capabilities will play a key role in future quantum simulations and computing applications with <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>173</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb arrays.</jats:p>},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
<jats:p>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 <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mn>1</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>S<jats:inline-formula>
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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msub>
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<mml:mn>0</mml:mn>
</mml:msub>
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<mml:mn>3</mml:mn>
</mml:msup>
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</jats:inline-formula>P<jats:inline-formula>
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<mml:mn>1</mml:mn>
</mml:msub>
</mml:mrow>
</mml:math>
</jats:inline-formula> intercombination transition, gravity balances the radiation pressure of a single upward-directed beam. This approach enables efficient trapping and cooling of the most common ytterbium isotopes (<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>171</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb, <jats:inline-formula>
<jats:tex-math/>
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<mml:mrow>
<mml:mn>173</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb and <jats:inline-formula>
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<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
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</jats:inline-formula>Yb) to <jats:inline-formula>
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</mml:math>
</jats:inline-formula>K at densities <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
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</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula> atoms cm<jats:sup>−3</jats:sup> within less than one second. This configuration allows for significantly reducing the complexity of the optical setup, potentially benefiting any ytterbium-atom based quantum science platform leveraging single-atom microscopy, from quantum processors to novel optical clocks. We then demonstrate the first single-atom-resolved imaging of the fermionic, large-spin isotope <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
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<mml:mrow>
<mml:mn>173</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb (<jats:inline-formula>
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<mml:mn>5</mml:mn>
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</mml:mrow>
<mml:mn>2</mml:mn>
</mml:mrow>
</mml:math>
</jats:inline-formula>), employing a two-color imaging scheme that does not rely on magic-wavelength trapping. We achieve a high single-atom imaging fidelity of <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mn>99.96</mml:mn>
<mml:mo stretchy="false">(</mml:mo>
<mml:mn>1</mml:mn>
<mml:mo stretchy="false">)</mml:mo>
<mml:mi mathvariant="normal">%</mml:mi>
</mml:mrow>
</mml:math>
</jats:inline-formula> and a large survival probability of <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:mn>98.5</mml:mn>
<mml:mo stretchy="false">(</mml:mo>
<mml:mn>2</mml:mn>
<mml:mo stretchy="false">)</mml:mo>
<mml:mi mathvariant="normal">%</mml:mi>
</mml:mrow>
</mml:math>
</jats:inline-formula>, despite large differential light shifts affecting all nuclear spin sublevels of the excited <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mn>3</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>P<jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mn>1</mml:mn>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula> state involved in the cooling transition. The demonstrated capabilities will play a key role in future quantum simulations and computing applications with <jats:inline-formula>
<jats:tex-math/>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
<mml:mrow>
<mml:msup>
<mml:mrow/>
<mml:mrow>
<mml:mn>173</mml:mn>
</mml:mrow>
</mml:msup>
</mml:mrow>
</mml:math>
</jats:inline-formula>Yb arrays.</jats:p>
Amaricci, A; Richaud, A; Capone, M; Oppong, N D; Scazza, Francesco
Engineering the Kondo impurity problem with alkaline-earth atom arrays Journal Article
In: arXiv preprint arXiv:2505.14630, 2025.
@article{amaricci2025engineering,
title = {Engineering the Kondo impurity problem with alkaline-earth atom arrays},
author = {A Amaricci and A Richaud and M Capone and N D Oppong and Francesco Scazza},
year = {2025},
date = {2025-01-01},
urldate = {2025-01-01},
journal = {arXiv preprint arXiv:2505.14630},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Falconi, A M; Panza, R; Sbernardori, S; Forti, R; Klemt, R; Karim, O A; Marinelli, M; Scazza, Francesco
Microsecond-scale high-survival and number-resolved detection of ytterbium atom arrays Journal Article
In: arXiv preprint arXiv:2507.01011, 2025.
@article{falconi2025microsecond,
title = {Microsecond-scale high-survival and number-resolved detection of ytterbium atom arrays},
author = {A M Falconi and R Panza and S Sbernardori and R Forti and R Klemt and O A Karim and M Marinelli and Francesco Scazza},
year = {2025},
date = {2025-01-01},
urldate = {2025-01-01},
journal = {arXiv preprint arXiv:2507.01011},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Surace, F M; Fromholz, P; Scazza, Francesco; Dalmonte, M
Scalable, ab initio protocol for quantum simulating SU(<mml:math xmlns:mml= Journal Article
In: Quantum, vol. 8, 2024, ISSN: 2521-327X.
@article{Surace2024,
title = {Scalable, ab initio protocol for quantum simulating SU(<mml:math xmlns:mml=},
author = {F M Surace and P Fromholz and Francesco Scazza and M Dalmonte},
doi = {10.22331/q-2024-05-23-1359},
issn = {2521-327X},
year = {2024},
date = {2024-05-23},
urldate = {2024-05-23},
journal = {Quantum},
volume = {8},
publisher = {Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften},
abstract = {<jats:p>We propose a protocol for the scalable quantum simulation of SU(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>N</mml:mi></mml:math>)<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mo>×</mml:mo></mml:math>U(1) lattice gauge theories with alkaline-earth like atoms in optical lattices in both one- and two-dimensional systems. The protocol exploits the combination of naturally occurring SU(<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>N</mml:mi></mml:math>) pseudo-spin symmetry and strong inter-orbital interactions that is unique to such atomic species. A detailed ab initio study of the microscopic dynamics shows how gauge invariance emerges in an accessible parameter regime, and allows us to identify the main challenges in the simulation of such theories. We provide quantitative results about the requirements in terms of experimental stability in relation to observing gauge invariant dynamics, a key element for a deeper analysis on the functioning of such class of theories in both quantum simulators and computers.</jats:p>},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Kwon, W. J.; Pace, G. Del; Xhani, K.; Galantucci, L.; Falconi, A. Muzi; Inguscio, M.; Scazza, Francesco; Roati, G.
Sound emission and annihilations in a programmable quantum vortex collider Journal Article
In: Nature, vol. 600, no. 7887, pp. 64–69, 2021, ISSN: 1476-4687.
@article{Kwon2021,
title = {Sound emission and annihilations in a programmable quantum vortex collider},
author = {W. J. Kwon and G. Del Pace and K. Xhani and L. Galantucci and A. Muzi Falconi and M. Inguscio and Francesco Scazza and G. Roati},
doi = {10.1038/s41586-021-04047-4},
issn = {1476-4687},
year = {2021},
date = {2021-12-02},
urldate = {2021-12-02},
journal = {Nature},
volume = {600},
number = {7887},
pages = {64--69},
publisher = {Springer Science and Business Media LLC},
keywords = {},
pubstate = {published},
tppubtype = {article}
}


Biography
Received his PhD in Physics from the Ludwig-Maximilians-Universität (LMU) in Munich in 2015, developing new quantum simulation experiments with ultracold atoms in optical lattices within the group of Immanuel Bloch. Since 2015 he has worked at the European Laboratory of Nonlinear Spectroscopy (LENS) as a Marie Sklodowska-Curie fellow and later as CNR-INO researcher, co-leading experiments on strongly correlated Fermi gases. In 2021 he was awarded an ERC Starting Grant with a project focusing on quantum simulating fermionic many-particle systems. Since May 2021 he is associate professor at the University of Trieste and he is leading the newly established Artificial Quantum Systems (ArQuS) laboratory, a joint effort between CNR and the University of Trieste.