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QTI Seminars
New quantum simulators with two-electron atoms: SU(N) fermions, Hall transport and new perspectives
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Europe/Zurich
40/S2-B01 - Salle Bohr (CERN)
Description
Optically trapped neutral atoms offer a unique technological platform for engineering synthetic many-body quantum systems, with ample tunability of experimental parameters. We can use them to realize direct quantum simulations of relevant microscopic models and achieve “extreme" states of matter with no counterpart in conventional physical systems.
I will discuss recent experimental results obtained at the University of Florence & LENS that were made possible by the coherent manipulation of internal states in strongly interacting 173Yb fermions trapped in optical lattices. I will discuss the realization of multi-component SU(N) Fermi-Hubbard systems, where a coherent laser coupling between internal states can induce a controlled breaking of the global interaction symmetry, leading to flavour-selective Mott localization [1]. I will also discuss recent experiments where we have measured Hall transport in interacting fermionic ladders, where the laser coupling implements the action of a strong background magnetic field on effectively charged particles: I will show a strong dependence of the Hall response upon changing atom-atom interactions [2] and discuss the direct measurement of Hall voltages and resistances, which provide a direct connection between cold-atom simulators and the measurement of electric quantities in conventional solid-state systems [3].
Finally, I will present the realization of new experimental platforms with programmable Rydberg arrays of individually trapped two-electron Yb and Sr atoms, both for analog quantum simulation of spin models and many-body quantum dynamics, and for the investigation of new approaches to atom-based quantum computing.
[1] D. Tusi et al., Nat. Phys. 18, 1201 (2022).
[2] T. Zhou et al., Science 381, 427 (2023).
[3] T. Zhou et al., Nat. Comm. 16, 10247 (2025).
I will discuss recent experimental results obtained at the University of Florence & LENS that were made possible by the coherent manipulation of internal states in strongly interacting 173Yb fermions trapped in optical lattices. I will discuss the realization of multi-component SU(N) Fermi-Hubbard systems, where a coherent laser coupling between internal states can induce a controlled breaking of the global interaction symmetry, leading to flavour-selective Mott localization [1]. I will also discuss recent experiments where we have measured Hall transport in interacting fermionic ladders, where the laser coupling implements the action of a strong background magnetic field on effectively charged particles: I will show a strong dependence of the Hall response upon changing atom-atom interactions [2] and discuss the direct measurement of Hall voltages and resistances, which provide a direct connection between cold-atom simulators and the measurement of electric quantities in conventional solid-state systems [3].
Finally, I will present the realization of new experimental platforms with programmable Rydberg arrays of individually trapped two-electron Yb and Sr atoms, both for analog quantum simulation of spin models and many-body quantum dynamics, and for the investigation of new approaches to atom-based quantum computing.
[1] D. Tusi et al., Nat. Phys. 18, 1201 (2022).
[2] T. Zhou et al., Science 381, 427 (2023).
[3] T. Zhou et al., Nat. Comm. 16, 10247 (2025).
Organised by
QTI
QTI seminars
Zoom Meeting ID
61072162853
Host
Elena Gianolio
Alternative hosts
Clara Murgui Galvez, Enrique Rico Ortega, Joachim Kopp, Michele Grossi
Passcode
31503105
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