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.

Journal/Review: PHYSICAL REVIEW A

Volume: 95 (4)      Pages from: 43623-1  to: 43623-7

More Information: The research was supported in part by DURIP-ARO Grant No. W911NF-08-1-0265, the Miller Family Endowment, and a Purdue University OVPR Research Incentive Grant. A.J.O. also acknowledges support of the US National Science Foundation Graduate Research Fellowship Program. C.Q. and C.Z. are supported by AFOSR (Grant No. FA9550-16-1-0387), ARO (Grant No. W911NF-17-1-0128) and NSF (Grant No. PHY-1505496). We thank Chris Greene, Li You, and Babak Seradjeh for helpful discussions.
KeyWords: Realization
DOI: 10.1103/PhysRevA.95.043623

Citations: 12
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