Nonequilibrium Dark Space Phase Transition.
Nonequilibrium Dark Space Phase Transition.
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非平衡暗空间相变。
DOI:
10.1103/physrevlett.128.040603
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发表时间:
2022
影响因子:
8.6
通讯作者:
Carollo F
中科院分区:
文献类型:
--
作者:
Carollo F
We introduce the concept of dark space phase transition, which may occur in open many-body quantum systems where irreversible decay, interactions, and quantum interference compete. Our study is based on a quantum many-body model that is inspired by classical nonequilibrium processes which feature phase transitions into an absorbing state, such as epidemic spreading. The possibility for different dynamical paths to interfere quantum mechanically results in collective dynamical behavior without classical counterpart. We identify two competing dark states, a trivial one corresponding to a classical absorbing state and an emergent one which is quantum coherent. We establish a nonequilibrium phase transition within this dark space that features a phenomenology which cannot be encountered in classical systems. Such emergent two-dimensional dark space may find technological applications, e.g., for the collective encoding of a quantum information.
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