Informational steady states and conditional entropy production in continuously monitored systems: The case of Gaussian systems
Informational steady states and conditional entropy production in continuously monitored systems: The case of Gaussian systems
复制标题
连续监控系统中的信息稳态和条件熵产生：高斯系统的情况
DOI：
10.1103/physreva.105.022213
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发表时间：
2022
影响因子：
2.9
通讯作者：
Belenchia A
中科院分区：
文献类型：
--
作者：
Belenchia A
测量一个系统的行为具有动力学和热力学性质的深刻后果。特别是，从非平衡过程中产生的不可逆性的程度受到旨在获取感兴趣的系统状态信息的测量的强烈影响：有条件和无条件的熵产生，量化了开放系统动力学的不可逆性的程度，通过明确解释的信息量相互关联。基于最近提出的碰撞模型框架[G. T. Landi，M. Paternostro和A. Belenchia，PRX Quantum 3，010303（2022）10.1103/PRX Quantum.3.010303]，我们研究了在高斯态中制备并经历高斯过程的连续可变信息载体的情况。我们建立了一个工具箱，充分表征连续测量的非平衡高斯系统和过程的热力学特性，说明了在此引入的仪器如何为最近的介观量子系统实验提供关键的见解[M.罗西湖Mancino湾T. Landi，M. Paternostro，A. Schliesser和A. Belenchia，物理学。Rev. Lett。125，080601（2020）10.1103/PhysRevLett.125.080601]。
The act of measuring a system has profound consequences of dynamical and thermodynamic nature. In particular, the degree of irreversibility ensuing from a nonequilibrium process is strongly affected by measurements aimed at acquiring information on the state of a system of interest: the conditional and unconditional entropy production, which quantify the degree of irreversibility of the open system's dynamics, are related to each other by clearly interpreted informational quantities. Building on a recently proposed collisional model framework [G. T. Landi, M. Paternostro, and A. Belenchia, PRX Quantum 3, 010303 (2022)10.1103/PRXQuantum.3.010303], we investigate the case of continuous-variable information carriers prepared in Gaussian states and undergoing Gaussian processes. We build up a toolbox that fully characterizes the thermodynamics of continuously measured nonequilibrium Gaussian systems and processes, illustrating how the instruments hereby introduced provide key insight into recent experiments on mesoscopic quantum systems [M. Rossi, L. Mancino, G. T. Landi, M. Paternostro, A. Schliesser, and A. Belenchia, Phys. Rev. Lett. 125, 080601 (2020)10.1103/PhysRevLett.125.080601].