Self-Adapted Floquet Dynamics of Ultracold Bosons in a Cavity

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dc.contributor.authorLuo, Xi-Wang
dc.contributor.authorZhang, Chuanwei
dc.contributor.utdAuthorLuo, Xi-Wang
dc.contributor.utdAuthorZhang, Chuanwei
dc.date.accessioned2019-08-30T16:57:09Z
dc.date.available2019-08-30T16:57:09Z
dc.date.created2018-06-29
dc.descriptionIncludes supplementary material
dc.description.abstractFloquet dynamics of a quantum system subject to periodic modulations of system parameters provides a powerful tool for engineering new quantum matter with exotic properties. While system dynamics is significantly altered, the periodic modulation itself is usually induced externally and independent of Floquet dynamics. Here we propose a new type of Floquet physics for a Bose-Einstein condensate (BEC) subject to a shaken lattice generated inside a cavity, where the shaken lattice and atomic Floquet bands are mutually dependent, resulting in self-adapted Floquet dynamics. In particular, the shaken lattice induces Floquet quasienergy bands for the BEC, whose backaction leads to a self-adapted dynamical normal-superradiant phase transition for the shaken lattice. Such self-adapted Floquet dynamics shows two surprising and unique features: (i) The normal-superradiant phase transition possesses a hysteresis even without atom interactions. (ii) The dynamical atom-cavity steady state could exist at free energy maxima. The atom interactions strongly affect the phase transition of the BEC from zero to finite momenta. Our results provide a powerful platform for exploring self-adapted Floquet physics, which may open an avenue for engineering novel quantum materials. © 2018 American Physical Society.
dc.description.departmentSchool of Natural Sciences and Mathematics
dc.description.sponsorshipThis work is supported by AFOSR (Grant No. FA9550-16-1-0387), the National Science Foundation (Grant No. PHY-1505496), and ARO (Grant No. W911NF-17-1-0128).
dc.identifier.bibliographicCitationLuo, X. -W, and C. Zhang. 2018. "Self-Adapted Floquet Dynamics of Ultracold Bosons in a Cavity." Physical Review Letters 120(26): art. 263202, doi:10.1103/PhysRevLett.120.263202
dc.identifier.issn0031-9007
dc.identifier.issue26
dc.identifier.urihttps://hdl.handle.net/10735.1/6813
dc.identifier.volume120
dc.language.isoen
dc.publisherAmerican Physical Society
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevLett.120.263202
dc.rights©2018 American Physical Society
dc.source.journalPhysical Review Letters
dc.subjectBose-Einstein condensation
dc.subjectModulation (Electronics)
dc.subjectQuantum optics
dc.subjectStatistical mechanics
dc.subjectQuantum systems
dc.subjectBosons
dc.subjectFloquet theory
dc.titleSelf-Adapted Floquet Dynamics of Ultracold Bosons in a Cavity
dc.type.genrearticle

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