论文标题
基于投影的绝热消除两分的开放量子系统
Projection based adiabatic elimination of bipartite open quantum systems
论文作者
论文摘要
绝热消除方法允许减少描述显示时间尺度分离的系统动力学所需的空间维度。对于开放量子系统，它包括消除快速部分，假设它几乎瞬间达到了稳态并获得了慢部分演变的近似值。这些方法可以应用于消除希尔伯特空间系统内的线性子空间，或者以消除两部分量子系统中的快速子系统。在这项工作中，我们扩展了一种绝热的消除方法，用于在开放量子系统（Phys。Rev.A 2020，101,042102）内消除快速自由度，以消除从开放的两部分量子系统中消除子系统。作为例证，我们将技术应用于分散耦合的两分Quibit系统，并且在开放的Rabi模型的情况下。
Adiabatic elimination methods allow the reduction of the space dimension needed to describe systems dynamics which exhibits separation of time scale. For open quantum system, it consists in eliminating the fast part assuming it has almost instantaneously reached its steady-state and obtaining an approximation of the evolution of the slow part. These methods can be applied to eliminate a linear subspace within the system Hilbert space, or alternatively to eliminate a fast subsystems in a bipartite quantum system. In this work, we extend an adiabatic elimination method used for removing fast degrees of freedom within a open quantum system (Phys. Rev. A 2020, 101,042102) to eliminate a subsystem from an open bipartite quantum system. As an illustration, we apply our technique to a dispersively coupled two-qubit system and in the case of the open Rabi model.
