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Fractional photon-assisted tunneling of ultra-cold atoms in periodically shaken double-well lattices

机译:周期性振动的双阱晶格中超冷原子的分数光子辅助隧穿

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摘要

Fractional photon-assisted tunneling is investigated both numerically and analytically in a double-well lattice. While integer photon-assisted tunneling is a single-particle effect, fractional photon-assisted tunneling is an interaction-induced many-body effect. Double-well lattices with few particles in each double well are ideal to study this effect far from the mean-field effects. It is predicted that the 1/4-resonance is observable in such systems. Fractional photon-assisted tunneling provides a physically relevant model, for which N-th order time-dependent perturbation theory can be large although all previous orders are small. All predicted effects will be observable with an existing experimental setup [1].
机译:在双阱晶格中数值和分析地研究了分数光子辅助隧穿。虽然整数光子辅助隧穿是单粒子效应,但分数光子辅助隧穿是相互作用引起的多体效应。在每个双孔中几乎没有粒子的双孔晶格非常适合研究这种效应,而不是平均场效应。预计在这种系统中可以观察到1/4共振。分数光子辅助隧穿提供了一个物理相关的模型,尽管先前的所有阶数都较小,但N阶与时间有关的扰动理论可能很大。现有的实验装置均可观察到所有预测的效果[1]。

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