Bloch oscillations of helicoidal spin-orbit coupled Bose-Einstein condensates in deep optical lattices

Sumaita Sultana; Golam Ali Sekh

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arXiv · 2509.14873

Bloch oscillations of helicoidal spin-orbit coupled Bose-Einstein condensates in deep optical lattices

Sumaita Sultana·Golam Ali Sekh

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Abstract

We consider helicoidal spin-orbit coupled Bose-Einstein condensates in deep optical lattice and study the dynamics of Bloch oscillation. We show that the variation of helicoidal gauge potential with spin-orbit coupling is different in zero-momentum and plane-wave phases. The characteristics of Bloch oscillation are different in the two phases. In the zero-momentum phase, the Bloch oscillation is harmonic while it is anharmonic in the plane-wave phase. The amplitude of Bloch oscillation is found to be affected by the helicoidal gauge potential and spin-orbit coupling. We examine that the decay of Bloch oscillation caused by mean-field interaction can be managed by helicoidal spin-orbit coupling.

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Sumaita Sultana, Golam Ali Sekh. 2025-09-18. Bloch oscillations of helicoidal spin-orbit coupled Bose-Einstein condensates in deep optical lattices. https://arxiv.org/abs/2509.14873

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