St\"uckelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice
Abstract
Time evolution of spin-orbit-coupled cold atoms in an optical lattice is studied, with a two-band energy spectrum having two avoided crossings. A force is applied such that the atoms experience two consecutive Landau-Zener tunnelings while transversing the avoided crossings. St\"uckelberg interference arises from the phase accumulated during the adiabatic evolution between the two tunnelings. This phase is gauge field-dependent and thus provides new opportunities to measure the synthetic gauge field, which is verified via calculation of spin transition probabilities after a double passage process. Time-dependent and time-averaged spin probabilities are derived, in which resonances are found. We also demonstrate chiral Bloch oscillation and rich spin-momentum locking behavior in this system.
Cite
@article{arxiv.2009.11438,
title = {St\"uckelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice},
author = {Shuang Liang and Zheng-Chun Li and Weiping Zhang and Lu Zhou and Zhihao Lan},
journal= {arXiv preprint arXiv:2009.11438},
year = {2020}
}
Comments
9 pages, 6 figures, close to published version