Dynamically induced many-body localization

Soonwon Choi, D. Abanin, M. Lukin
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引用次数: 14

Abstract

We show that a quantum phase transition from ergodic to many-body localized (MBL) phases can be induced via periodic pulsed manipulation of spin systems. Such a transition is enabled by the interplay between weak disorder and slow heating rates. Specifically, we demonstrate that the Hamiltonian of a weakly disordered ergodic spin system can be effectively engineered, by using sufficiently fast coherent controls, to yield a stable MBL phase, which in turn completely suppresses the energy absorption from external control field. Our results imply that a broad class of existing many-body systems can be used to probe non-equilibrium phases of matter for a long time, limited only by coupling to external environment.
动态诱导多体定位
我们证明了一个量子相变从遍历相到多体局域相(MBL)可以通过周期性脉冲操纵自旋系统诱导。这种转变是由弱无序和慢加热速率之间的相互作用实现的。具体来说,我们证明了弱无序遍历自旋系统的哈密顿量可以通过使用足够快的相干控制来有效地设计,以产生稳定的MBL相位,从而完全抑制来自外部控制场的能量吸收。我们的结果表明,在很长一段时间内,现有的一类广泛的多体系统可以用于探测物质的非平衡相,仅受外部环境耦合的限制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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