Direct Lattice Shaking of Bose Condensates: Finite Momentum Superfluids

Brandon M. Anderson, Logan W. Clark, Jennifer Crawford, Andreas Glatz, Igor S. Aranson, Peter Scherpelz, Lei Feng, Cheng Chin, K. Levin

Research output: Contribution to journalArticle

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Abstract

We address band engineering in the presence of periodic driving by numerically shaking a lattice containing a bosonic condensate. By not restricting to simplified band structure models we are able to address arbitrary values of the shaking frequency, amplitude, and interaction strengths g. For "near-resonant" shaking frequencies with moderate g, a quantum phase transition to a finite momentum superfluid is obtained with Kibble-Zurek scaling and quantitative agreement with experiment. We use this successful calibration as a platform to support a more general investigation of the interplay between (one particle) Floquet theory and the effects associated with arbitrary g. Band crossings lead to superfluid destabilization, but where this occurs depends on g in a complicated fashion.

Original languageEnglish (US)
Article number220401
JournalPhysical Review Letters
Volume118
Issue number22
DOIs
StatePublished - May 31 2017

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Anderson, B. M., Clark, L. W., Crawford, J., Glatz, A., Aranson, I. S., Scherpelz, P., Feng, L., Chin, C., & Levin, K. (2017). Direct Lattice Shaking of Bose Condensates: Finite Momentum Superfluids. Physical Review Letters, 118(22), [220401]. https://doi.org/10.1103/PhysRevLett.118.220401