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arXiv · 2202.06873

Floquet engineering a bosonic Josephson junction

Si-Cong Ji·Thomas Schweigler·Mohammadamin Tajik·Federica Cataldini·João Sabino·Frederik S. Møller·Sebastian Erne·Jörg Schmiedmayer
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Abstract

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.

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Si-Cong Ji, Thomas Schweigler, Mohammadamin Tajik, Federica Cataldini, João Sabino, Frederik S. Møller, Sebastian Erne, Jörg Schmiedmayer. 2022-02-14. Floquet engineering a bosonic Josephson junction. https://doi.org/10.1103/physrevlett.129.080402

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