莫特绝缘体中隐藏干扰的恢复
Recovery of Hidden Interference in Mott Insulators
摘要：
粒子统计在强相互作用量子多体系统中起着至关重要的作用。在这里，我们研究的哈伯德模型可区分的粒子在单位填充。从强隧穿极限下的类超流态开始，逐渐减少隧穿，使得原位排斥相互作用占主导地位，该态最终以莫特绝缘体态的对称叠加而结束。这一结果可以通过密度关联函数中干涉图样的恢复得到实验证实。我们还表明，这种状态是一个最大纠缠态，在标准的图片相反。
英文摘要：
Particle statistics plays a crucial role in a strongly interacting quantum many-body system. Here, we study the Hubbard model for distinguishable particles at unit filling. Starting from the superfluid-like state in the strong tunneling limit and gradually reducing the tunneling so that the on-site repulsive interaction dominates, the state ends up in a symmetric superposition of Mott insulator states. This result can be experimentally confirmed by the recovery of interference patterns in the density correlation functions. We also show that this state is a maximally entangled state, in contrast to the standard picture.
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