Spin-orbit coupled Bose-Einstein condensate in a tilted optical lattice

Details Spin-orbit coupled Bose-Einstein condensate in a tilted optical lattice Spin-orbit coupled Bose-Einstein condensate in a tilted optical lattice

2010-01-14

arxiv.org/abs/1001.2527v2

Phys. Rev. A 82, 043620 (2010)

Physics

Condensed Matter

Quantum Gases

12 pages, 7 figures

Scientific paper

Bloch oscillations appear for a particle in a weakly tilted periodic potential. The intrinsic spin Hall effect is an outcome of a spin-orbit coupling. We demonstrate that both these phenomena can be realized simultaneously in a gas of weakly interacting ultracold atoms exposed to a tilted optical lattice and to a set of spatially dependent light fields inducing an effective spin-orbit coupling. It is found that both the spin Hall as well as the Bloch oscillation effects may coexist, showing, however, a strong correlation between the two. These correlations are manifested as a transverse spin current oscillating in-phase with the Bloch oscillations.

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