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arXiv 2009.04839cond-mat.quant-gas
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两个穿着里德伯的原子从开放阱中逃逸

Two Rydberg-dressed atoms escaping from an open well

Jacek Dobrzyniecki, Tomasz Sowiński

摘要:

全面分析了两个里德伯粒子(玻色子或费米子)从势阱隧穿到开放空间的动力学。我们发现,占主导地位的衰减机制开关从顺序隧穿对隧穿时,相互作用强度被调谐到低于一定的临界值。这些临界值可以通过调整相互作用势的有效范围来修改。通过比较玻色子和费米子的动力学,我们发现这两种情况之间有显着的差异。特别是,增加相互作用范围以相反的方式修改费米子和玻色子的隧穿率。此外,对于费米子系统,需要更强的吸引相互作用来实现对隧穿。这些结果提供了对隧穿系统动力学的深入了解,并且根据最近实现的隧穿少体系统和原子的Rydberg敷料,它们为未来的实验提供了希望。

英文摘要:

A comprehensive analysis of the dynamics of two Rydberg-dressed particles (bosons or fermions) tunneling from a potential well into open space is provided. We show that the dominant decay mechanism switches from sequential tunneling to pair tunneling when the interaction strength is tuned below a certain critical value. These critical values can be modified by tuning the effective range of the interaction potential. By comparing the dynamics for bosons and fermions, we show that there are significant differences between the two cases. In particular, increasing the interaction range modifies the tunneling rate in opposite ways for fermions and bosons. Furthermore, for the fermionic system much stronger attractive interactions are needed to achieve pair tunneling. The results provide insight into the dynamics of tunneling systems and, in light of recent realizations of tunneling few-body systems and Rydberg dressing of atoms, they offer promise for future experiments.

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