近日，中国海洋大学的王兆明教授及其研究小组与青岛理工大学的任凤华等人合作并取得一项新进展。经过不懈努力，他们揭示稳态量子相干中的非马尔可夫环境诱导异常。相关研究成果已于2024年11月21日在国际知名学术期刊《物理评论A》上发表。

在本文中，研究人员深入探讨了环境诱导的稳态量子相干性（SSQC）的基本原理，揭示了其在系统-浴相互作用框架下的产生机制。从微观的系统-浴耦合模型出发，研究人员研究了SSQC对环境记忆效应、浴温度、系统-浴耦合强度以及压缩参数的依赖关系。

这项研究发现，环境不仅作为SSQC的产生者，同时也扮演着破坏者的角色。对于非马尔可夫浴，由于这两种机制的竞争，SSQC会存在一个峰值。有趣的是，在马尔可夫情况下，这个峰值会消失。此外，他们还观察到，通过环境压缩可以进一步放大产生的SSQC。

据悉，环境诱导的稳态量子相干性（SSQC）是一种引人入胜的现象，它挑战了传统的退相干理解。

附：英文原文

Title: Non-Markovian-environment-induced anomaly in steady-state quantum coherence

Author: Arapat Ablimit, Zhao-Ming Wang, Feng-Hua Ren, Paul Brumer, Lian-Ao Wu

Issue&Volume: 2024/11/21

Abstract: Environment-induced steady-state quantum coherence (SSQC) is a captivating phenomenon that challenges conventional understandings of decoherence. In this article, we delve into the foundational aspects of environment-induced SSQC, shedding light on its emergence within the framework of system-bath interactions. Starting from a microscopic system-bath-coupled model, we investigate the dependence of SSQC on environmental memory effects, the bath temperature, the system-bath coupling strength, and squeezing parameters. Our findings reveal that the environment not only acts as a generator but also as a disruptor of SSQC. A peak will exist for a non-Markovian bath, which is a result of competition between these two mechanisms. Interestingly, the peak disappears in the Markovian case. Additionally, we observe that the generated SSQC can be further amplified through environment squeezing.

DOI: 10.1103/PhysRevA.110.052220

Source: https://journals.aps.org/pra/abstract/10.1103/PhysRevA.110.052220