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arXiv · 1607.07005

Harmonic trap resonance enhanced synthetic atomic spin-orbit coupling

Ling-Na Wu·Xin-Yu Luo·Zhi-Fang Xu·Masahito Ueda·Ruquan Wang·L. You
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Abstract

Spin-orbit coupling (SOC) plays an essential role in many exotic and interesting phenomena in condensed matter physics. In neutral-atom-based quantum simulations, synthetic SOC constitutes a key enabling element. The strength of SOC realized so far is limited by various reasons or constraints. This work reports tunable SOC synthesized with a gradient magnetic field (GMF) for atoms in a harmonic trap. Nearly ten-fold enhancement is observed when the GMF is modulated near the harmonic-trap resonance in comparison with free-space atoms. A theory is developed that well explains the experimental results. Our work offers a clear physical insight into and analytical understanding of how to tune the strength of atomic SOC synthesized with GMF using harmonic trap resonance.

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Ling-Na Wu, Xin-Yu Luo, Zhi-Fang Xu, Masahito Ueda, Ruquan Wang, L. You. 2016-07-24. Harmonic trap resonance enhanced synthetic atomic spin-orbit coupling. https://doi.org/10.1038/srep46756

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