Leonard, J., Kim, S., Kwan, J., Segura, P., Grusdt, F., Repellin, C., Goldman, N., & Greiner, M. (2023, March 6). Realization of a fractional quantum Hall state with ultracold atoms [Conference Presentation]. DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Photonik (SAMOP 2023), Hannover, Germany.
E141-02 - Forschungsbereich Atom Physics and Quantum Optics
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Date (published):
6-Mar-2023
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Event name:
DPG-Frühjahrstagung der Sektion Atome, Moleküle, Quantenoptik und Photonik (SAMOP 2023)
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Event date:
5-Mar-2023 - 10-Mar-2023
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Event place:
Hannover, Germany
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Keywords:
Ultracold Atoms
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Abstract:
Fractional quantum Hall states embody emblematic instances of strongly correlated topological matter, where the interplay of magnetic fields and interactions gives rise to exotic properties including fractionally charged quasi-particles, long-ranged entanglement, and anyonic exchange statistics. Here, we report on the realization of a fractional quantum Hall (FQH) state with ultra-cold atoms in an optical lattice. The state is a lattice version of a bosonic 𝜈 = 1/2 Laughlin state with two particles on sixteen sites. We observe a suppression of two-body interactions, we find a distinctive vortex structure in the density correlations, and we measure a fractional Hall conductivity of 𝜎H/𝜎0 = 0.6(2) via the bulk response to a magnetic perturbation. Our work provides a starting point for exploring highly entangled topological matter with ultracold atoms.
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Additional information:
Realization of a Fractional Quantum Hall State with Ultracold Atoms
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Research Areas:
Quantum Modeling and Simulation: 30% Quantum Many-body Systems Physics: 30% Design and Engineering of Quantum Systems: 40%