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Quantum tunneling switch in an interacting many-body bosonic system

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Abstract

I adopt a two-mode bosonic model with both strong atom–atom interaction and a periodic driven field to investigate the bias-modulated tunneling dynamics. I show that the quantum tunneling between two bosonic modes can be efficiently switched on/off when one continuously varies the amplitude of the driven field with an intermediate frequency. I explore the role of the atom–atom interaction on the switch effect as well. For the strong interaction case, in contrast to the unmodulated situation, there exists many windows in the atomic interaction domain for switching on/off the quantum tunneling. This result suggests a potential way to accurately control the quantum tunneling or coherent coupling of ultracold atoms in the strong interaction and self-trapping regimes.

© 2018 Optical Society of America

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