量子非马尔可夫“偶然旁观者”环境
Quantum non-Markovian "casual bystander" environments
摘要：
即使在系统演化过程中与环境相关的自由度完全不受影响，也可以诱导量子记忆效应。本文基于系统-环境动力学的二分表示，发现了导致这类量子非马尔可夫“偶然旁观者环境”的更一般的相互作用。“研究了由此产生的动力学的一般性质，重点是系统与环境的相关性、基于碰撞测量的表示和量子回归假设。记忆效应的特点也是通过一个操作的方法，这反过来又允许检测时，所研究的属性适用。单量子位和多量子位动力学支持和验证了所开发的结果。
英文摘要：
Quantum memory effects can be induced even when the degrees of freedom associated to the environment are not affected at all during the system evolution. In this paper, based on a bipartite representation of the system-environment dynamics, we found the more general interactions that lead to this class of quantum non-Markovian "casual bystander environments." General properties of the resulting dynamics are studied with focus on the system-environment correlations, a collisional measurement-based representation, and the quantum regression hypothesis. Memory effects are also characterized through an operational approach, which in turn allows to detect when the studied properties apply. Single and multipartite qubits dynamics support and exemplify the developed results.
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