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arXiv · 2209.10190

Spin-orbit-coupled spinor gap solitons in Bose-Einstein condensates

Jing Yang·Yongping Zhang
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Abstract

Spin-1 spin-orbit-coupled spinor Bose-Einstein condensates have been realized in experiment. We study spin-orbit-coupled spinor gap solitons in this experimentally realizable system with an optical lattice. The spin-dependent parity symmetry of the spin-orbit coupling plays an important role in properties of gap solitons. Two families of solitons with opposite spin-dependent parity are found. Using an approximating model by replacing the optical lattice with a Harmonic trap, we demonstrate the physical origination of these two families. For a large negative quadratic Zeeman shift, we also find a type of gap solitons that spontaneously breaks the spin-dependent parity symmetry due to the ferromagnetic spinor interactions.

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Jing Yang, Yongping Zhang. 2023-02-10. Spin-orbit-coupled spinor gap solitons in Bose-Einstein condensates. https://doi.org/10.1103/physreva.107.023316

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