Floquet engineering a bosonic Josephson junction

We study Floquet engineering of the tunnel coupling between a pair of one-dimensional bosonic quasi-condensates in a tilted double-well potential. By modulating the energy difference between the two wells, we re-establish tunnel coupling and precisely control its amplitude and phase. This allows us...

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Bibliographic Details
Published in:arXiv.org 2022-02
Main Authors: Si-Cong Ji, Schweigler, Thomas, Tajik, Mohammadamin, Cataldini, Federica, Sabino, João, Møller, Frederik S, Erne, Sebastian, Schmiedmayer, Jörg
Format: Article
Language:English
Subjects:
Coupling
Josephson junctions
Tunnels
Online Access:Get full text
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Summary:We study Floquet engineering of the tunnel coupling between a pair of one-dimensional bosonic quasi-condensates in a tilted double-well potential. By modulating the energy difference between the two wells, we re-establish tunnel coupling and precisely control its amplitude and phase. This allows us to initiate coherence between two initially uncorrelated Bose gases and prepare different initial states in the emerging sine-Gordon Hamiltonian. We fully characterize the Floquet system and study the dependence of both equilibrium properties and relaxation on the modulation.
ISSN:2331-8422
DOI:10.48550/arxiv.2202.06873