Operational approach to quantum stochastic thermodynamics.
Operational approach to quantum stochastic thermodynamics.
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DOI：
10.1103/physreve.100.022127
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发表时间：
2018-10
期刊：
影响因子：
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通讯作者：
P. Strasberg
中科院分区：
文献类型：
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作者：
P. Strasberg
我们建立了一个量子随机热力学的框架，完全基于实验可控，但在离散时间的任意干预。使用标准假设的系统浴动力学和见解的重复相互作用框架，我们定义的内部能量，热量，工作和熵的轨迹水平。第一定律（在轨迹水平）和第二定律（平均）的有效性被建立。该理论自然地允许一个处理不完整的信息，它是能够顺利地插入之间的基于几何和合奏级的描述。我们用我们的理论来计算最近的实验报告的光子数态的稳定，使用实时量子反馈控制的热力学效率。特别注意我们的一般理论，在那里我们恢复或对比它与以前的结果的限制情况下。我们指出了各种有趣的问题，该理论能够严格解决，如在热力学量子效应的检测。
We set up a framework for quantum stochastic thermodynamics based solely on experimentally controllable but otherwise arbitrary interventions at discrete times. Using standard assumptions about the system-bath dynamics and insights from the repeated interaction framework, we define internal energy, heat, work, and entropy at the trajectory level. The validity of the first law (at the trajectory level) and the second law (on average) is established. The theory naturally allows one to treat incomplete information and it is able to smoothly interpolate between a trajectory-based and an ensemble level description. We use our theory to compute the thermodynamic efficiency of recent experiments reporting on the stabilization of photon number states using real-time quantum feedback control. Special attention is paid to limiting cases of our general theory, where we recover or contrast it with previous results. We point out various interesting problems, which the theory is able to address rigorously, such as the detection of quantum effects in thermodynamics.