Nick Klemmer, Janek Fleper, Valentin Jonas, Ameneh Sheikhan, Corinna Kollath, Michael Köhl, Andrea Bergschneider:
🔓 arXiv:2404.08482 (2024)
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.