期刊
NEW JOURNAL OF PHYSICS
卷 22, 期 8, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aba30e
关键词
quantum Hall; quantum simulation; ultracold atoms; skyrmion
资金
- ERC consolidator Grant [725636]
- Heidelberg Centre for Quantum Dynamics
- DFG Collaborative Research Centre [SFB 1225]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC-2111-390814868]
- Daimler and Benz Foundation
- European Research Council (ERC) [725636] Funding Source: European Research Council (ERC)
We show that ultracold fermions in an artificial magnetic field open up a new window to the physics of the spinful fractional quantum Hall (FQH) effect. We numerically study the lowest energy states of strongly interacting few-fermion systems in rapidly rotating optical microtraps. We find that skyrmion-like ground states with locally ferromagnetic, long-range spin textures emerge. To realize such states experimentally, rotating microtraps with higher-order angular momentum components may be used to prepare fermionic particles in a lowest Landau level. We find parameter regimes in which skyrmion-like ground states should be accessible in current experiments and demonstrate an adiabatic pathway for their preparation in a rapidly rotating harmonic trap. The addition of long range interactions will lead to an even richer interplay between spin textures and FQH physics.
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