Floquet-driven crossover from density-assisted tunneling to enhanced pair tunneling
arxiv(2024)
Abstract
We investigate the experimental control of pair tunneling in a double-well
potential using Floquet engineering. We demonstrate a crossover from a regime
with density-assisted tunneling to dominant pair tunneling by tuning the
effective interactions. Furthermore, we show that the pair tunneling rate can
be enhanced not only compared to the Floquet-reduced single-particle tunneling
but even beyond the static superexchange rate, while keeping the effective
interaction in a relevant range. This opens possibilities to realize models
with explicit pair tunneling in ultracold atomic systems.
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