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Total State Dynamics in the GKSL Regime

机译:GKSL体制下的总体状态动力学

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We develop a framework that allows us to describe the dynamics of the total state of an open quantum system and its bosonic environment in the usual Born (weak coupling) and Markov approximation. By shifting the whole time-dependence into an unnormalized s-operator of the open system, the full dynamics is captured by an s-master equation of similar structure than the well-known Gorini-Kossakowski-Sudarshan-Lindblad (GKSL) master equation for the reduced dynamics. By varying the ordering parameter s (0 ≤ s ≤ 1) we obtain the partial Husimi representation (s = 0) and the partial Glauber-Sudarshan representation (s = 1) for the dynamics of the total state. For the reduced density operator the GKSL master equation can be derived easily. The case of s = 1/2, leading to a partial Wigner representation, is helpful to study the overlap of states in the total Hilbert space of system and environment.
机译:我们开发了一个框架,该框架使我们能够以通常的Born(弱耦合)和Markov逼近来描述开放量子系统及其玻色环境的总状态的动力学。通过将整个时间相关性转移到开放系统的未归一化s算子中,可以通过结构类似于已知的Gorini-Kossakowski-Sudarshan-Lindblad(GKSL)主方程的结构的s-master方程来捕获全部动力学。降低的动力。通过改变排序参数s(0≤s≤1),我们获得了总状态动力学的部分Husimi表示(s = 0)和部分Glauber-Sudarshan表示(s = 1)。对于密度降低的算符,可以轻松导出GKSL主方程。 s = 1/2的情况导致部分维格纳表示,这有助于研究系统和环境在整个希尔伯特空间中状态的重叠。

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