St\"uckelberg interferometry using spin-orbit-coupled cold atoms in an
optical lattice
- URL: http://arxiv.org/abs/2009.11438v1
- Date: Thu, 24 Sep 2020 01:29:33 GMT
- Title: St\"uckelberg interferometry using spin-orbit-coupled cold atoms in an
optical lattice
- Authors: Shuang Liang, Zheng-Chun Li, Weiping Zhang, Lu Zhou, and Zhihao Lan
- Abstract summary: Time evolution of spin-orbit-coupled cold atoms in an optical lattice is studied.
Two-band energy spectrum has two avoided crossings.
Time-dependent and time-averaged spin probabilities are derived.
- Score: 7.805817645276311
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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.
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