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Spin-orbit-coupled Bose-Einstein condensates in a one-dimensional optical lattice
Journal article   Open access  Peer reviewed

Spin-orbit-coupled Bose-Einstein condensates in a one-dimensional optical lattice

C Hamner, Yongping Zhang, M A Khamehchi, Matthew J Davis and P Engels
Physical review letters, Vol.114(7), pp.070401-070401
02/20/2015
Handle:
https://hdl.handle.net/2376/106418
PMID: 25763940
url
https://doi.org/10.1103/PhysRevLett.114.070401View
Published (Version of record) Open

Abstract

We investigate a spin-orbit-coupled Bose-Einstein condensate loaded into a translating optical lattice. We experimentally demonstrate the lack of Galilean invariance in the spin-orbit-coupled system, which leads to anisotropic behavior of the condensate depending on the direction of translation of the lattice. The anisotropy is theoretically understood by an effective dispersion relation. We experimentally confirm this theoretical picture by probing the dynamical instability of the system.

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