Spin-Momentum Coupled Bose-Einstein Condensates with Lattice Band Pseudospins

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dc.contributor.ResIDH-3571-2011 (Zhang, C)en_US
dc.contributor.authorKhamehchi, M. A.en_US
dc.contributor.authorQu, Chunleien_US
dc.contributor.authorMossman, M. E.en_US
dc.contributor.authorZhang, Chuanweien_US
dc.contributor.authorEngels, P.en_US
dc.contributor.utdAuthorQu, Chunleien_US
dc.contributor.utdAuthorZhang, Chuanweien_US
dc.date.accessioned2016-09-23T20:53:19Z
dc.date.available2016-09-23T20:53:19Z
dc.date.created2016-02-29en_US
dc.date.issued2016-02-29en_US
dc.description.abstractThe quantum emulation of spin-momentum coupling, a crucial ingredient for the emergence of topological phases, is currently drawing considerable interest. In previous quantum gas experiments, typically two atomic hyperfine states were chosen as pseudospins. Here, we report the observation of a spin-momentum coupling achieved by loading a Bose-Einstein condensate into periodically driven optical lattices. The s and p bands of a static lattice, which act as pseudospins, are coupled through an additional moving lattice that induces a momentum-dependent coupling between the two pseudospins, resulting in s-p hybrid Floquet-Bloch bands. We investigate the band structures by measuring the quasimomentum of the Bose-Einstein condensate for different velocities and strengths of the moving lattice, and compare our measurements to theoretical predictions. The realization of spin-momentum coupling with lattice bands as pseudospins paves the way for engineering novel quantum matter using hybrid orbital bands.en_US
dc.description.sponsorshipFunding waxs provided by NSF (Grant No. PHY-1306662). ARO (W911NF-12-1-0334) and AFOSR. (FA9550-13-1-0045en_US
dc.identifier.bibliographicCitationKhamehchi, M. A., C. Qu, M. E. Mossman, C. Zhang, et al. 2016. "Spin-momentum coupled Bose-Einstein condensates with lattice band pseudospins." Nature Communications 7(10867), DOI: 10.1038/ncomms10867en_US
dc.identifier.issn2041-1723en_US
dc.identifier.issue10867en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/5055
dc.identifier.volume7en_US
dc.language.isoenen_US
dc.publisherNature Publishing Groupen_US
dc.relation.urihttp://dx.doi.org/10.1038/ncomms10867
dc.rightsCC BY 4.0 (Attribution)en_US
dc.rights©2016 The Authorsen_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.sourceNature Communications
dc.subjectOptical latticesen_US
dc.subjectBose-Einstein condensationen_US
dc.subjectLattice field theoryen_US
dc.titleSpin-Momentum Coupled Bose-Einstein Condensates with Lattice Band Pseudospinsen_US
dc.type.genreArticleen_US

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