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arXiv · 1108.4233

Spin-orbit coupled weakly interacting Bose-Einstein condensates in harmonic traps

Hui Hu·B. Ramachandhran·Han Pu·Xia-Ji Liu
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Abstract

We investigate theoretically the phase diagram of a spin-orbit coupled Bose gas in two-dimensional harmonic traps. We show that discrete Landau levels develop at strong spin-orbit coupling. For a weakly interacting gas, quantum states with skyrmion lattice patterns emerge spontaneously and preserve either parity symmetry or combined parity-time-reversal symmetry. These phases can be readily observed by experimentally engineering spin-orbit coupling and interatomic interactions for a cloud of $^{87}$Rb atoms in a highly oblate trap.

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Hui Hu, B. Ramachandhran, Han Pu, Xia-Ji Liu. 2012-02-23. Spin-orbit coupled weakly interacting Bose-Einstein condensates in harmonic traps. https://doi.org/10.1103/physrevlett.108.010402

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