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Stückelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice

Liang, S; Li, ZC; Zhang, W; Zhou, L; Lan, Z; (2020) Stückelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice. Physical Review A , 102 (3) , Article 033332. 10.1103/PhysRevA.102.033332. Green open access

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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. Stückelberg 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.

Type: Article
Title: Stückelberg interferometry using spin-orbit-coupled cold atoms in an optical lattice
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevA.102.033332
Publisher version: https://doi.org/10.1103/PhysRevA.102.033332
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10113255
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