Scientific Results

Stueckelberg interferometry using periodically driven spin-orbit-coupled Bose-Einstein condensates

Year: 2017

Authors: Olson A., Blasing DB., Qu CL., Li CH., Niffenegger RJ., Zhang CW., Chen YP.

Autors Affiliation: Purdue Univ, Dept Phys & Astron, W Lafayette, IN 47907 USA; Univ Texas Dallas, Dept Phys, Richardson, TX 75080 USA; Univ Trento, INO CNR BEC Ctr, I-38123 Povo, Italy; Univ Trento, Dipartimento Fis, I-38123 Povo, Italy;‎ Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA; Purdue Univ, Purdue Quantum Ctr, W Lafayette, IN 47907 USA

Abstract: We study the single-particle dispersion of a spin-orbit-coupled (SOC) Bose-Einstein condensate (BEC) under the periodical modulation of the Raman coupling. This modulation introduces a further coupling of the SOC dressed eigenlevels, thus creating a second generation of modulation-dressed eigenlevels. Theoretical calculations show that these modulation-dressed eigenlevels feature a pair of avoided crossings and a richer spin-momentum locking, which we observe using BEC transport measurements. Furthermore, we use the pair of avoided crossings to engineer a tunable Stueckelberg interferometer that gives interference fringes in the spin polarization of BECs.


Volume: 95 (4)      Pages from: 043623-1  to: 043623-7

DOI: 10.1103/PhysRevA.95.043623

Citations: 5
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