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Nonequilibrium quantum transport coefficients and transient dynamics of full counting statistics in the strong-coupling and non-Markovian regimes

机译:强耦合和非马尔可夫状态下全平衡统计的非平衡量子输运系数和瞬态动力学

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Nonequilibrium transport properties of quantum systems have recently become experimentally accessible in a number of platforms in so-called full-counting experiments that measure transient and steady-state nonequilibrium transport dynamics. We show that the effect of the measurement back-action can be exploited to establish general relationships between transport coefficients in the transient regime which take the form of fluctuation-dissipation theorems in the steady state. This result becomes most conspicuous in the transient dynamics of open quantum systems under strong-coupling to non-Markovian environments in nonequilibrium settings. In order to explore this regime, a new simulation method based in a hierarchy of equations of motion has been developed. We instantiate our proposal with the study of energetic conductance between two baths connected via a few level system.
机译:量子系统的非平衡输运性质最近已在许多平台上通过所谓的全计数实验(可测量瞬态和稳态非平衡输运动力学)进行实验访问。我们表明,可以利用测量反作用的影响来建立瞬态状态下输运系数之间的一般关系,该关系在稳态下采取波动耗散定理的形式。在非平衡环境下,在强耦合到非马尔可夫环境的开放量子系统的瞬态动力学中,这一结果最为明显。为了探索这种机制,已经开发了一种基于运动方程层次的新模拟方法。我们通过研究通过几个层次系统连接的两个浴之间的能量传导来实例化我们的建议。

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  • 来源
    《Physical review》 |2016年第21期|214308.1-214308.7|共7页
  • 作者单位

    Institut fuer Theoretische Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany;

    Institut fuer Theoretische Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany;

    Institut fuer Theoretische Physik, Technische Universitaet Berlin, Hardenbergstrasse 36, 10623 Berlin, Germany;

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