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- W3100000519 abstract "Since the recent experimental realization of synthetic Rashba spin-orbit coupling paved a new avenue for exploring and engineering topological phases in ultracold atoms, a precise, solid detection of Berry phase has been desired for unequivocal characterization of system topology. Here, we propose a scheme to conduct momentum-space Aharonov-Bohm interferometry in a Rashba spin-orbit coupled Bose-Einstein condensate with a sudden change of in-plane Zeeman field, capable of measuring the Berry phase of Rashba energy bands. We find that the Berry phase with the presence of a Dirac point is directly revealed by a robust dark interference fringe, and that as a function of external Zeeman field is characterized by the contrast of fringes. We also build a variational model describing the interference process with semiclassical equations of motion of essential dynamical quantities, which lead to agreeable trajectories and geometric phases with the real-time simulation of Gross-Pitaevskii equation. Our study would provide timely guidance for the experimental detection of Berry phase in ultracold atomic systems and help further investigation on their interference dynamics in momentum space." @default.
- W3100000519 created "2020-11-23" @default.
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- W3100000519 date "2018-08-13" @default.
- W3100000519 modified "2023-09-23" @default.
- W3100000519 title "Momentum space Aharonov-Bohm interferometry in Rashba spin-orbit coupled Bose-Einstein condensates" @default.
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- W3100000519 doi "https://doi.org/10.1209/0295-5075/123/10005" @default.
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