Work fluctuation theorem for a classical circuit coupled to a quantum conductor
Work fluctuation theorem for a classical circuit coupled to a quantum conductor
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耦合到量子导体的经典电路的功涨落定理
DOI：
10.1103/physrevb.86.075420
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发表时间：
2012
影响因子：
3.7
通讯作者：
K. Kobayashi
中科院分区：
文献类型：
--
作者：
Y. Utsumi;D. S. Golubev;M. Marthaler;G. Schön;K. Kobayashi
我们提出了一个定量检验量子涨落定理的装置。它由一个由外部电压源驱动的量子导体和一个经典的电感电容电路组成。电压源对系统所做的功可以用经典的自由度来表示，这些自由度可以用传统的技术来测量。以这种方式，电路充当经典检测器来执行量子导体的测量。我们证明了这个定义与功涨落定理是一致的。所考虑的系统有效地描述了一个朗之万方程与非高斯白色噪声。我们的分析扩展了波动定理的证明，这种情况下。
We propose a setup for a quantitative test of the quantum fluctuation theorem. It consists of a quantum conductor, driven by an external voltage source, and a classical inductor-capacitor circuit. The work done on the system by the voltage source can be expressed by the classical degrees of freedom of thecircuit, which are measurable by conventional techniques. In this way, the circuit acts as a classical detector to perform measurements of the quantum conductor. We prove that this definition is consistent with the work fluctuation theorem. The system under consideration is effectively described by a Langevin equation with non-Gaussian white noise. Our analysis extends the proof of the fluctuation theorem to this situation.