Quantum thermodynamics for driven dissipative bosonic systems
Quantum thermodynamics for driven dissipative bosonic systems
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DOI：
10.1103/physrevb.97.085434
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发表时间：
2018-02-23
影响因子：
3.7
通讯作者：
Nitzan, Abraham
中科院分区：
文献类型：
--
作者：
Ochoa, Maicol A.;Zimbovskaya, Natalya;Nitzan, Abraham
我们研究了两个典型耗散玻色子系统在慢速驱动和任意系统池耦合强度下的动态演化，恢复了它们的热和功速率，并验证了热力学定律是符合的。具体来说，我们看一下阻尼谐振子和阻尼二能级系统。对于前者，我们独立地研究了振荡器频率和耦合强度中的慢时摄动。对于后者，我们着重于两个能级之间能量间隙的缓慢调制。重要的是，我们能够在不明确定义熵泛函的非平衡扩展的情况下找到每种情况下的熵产生率。该分析还允许根据体系浴复合材料的结构特性定义现象学摩擦系数。
We investigate two prototypical dissipative bosonic systems under slow driving and arbitrary system-bath coupling strength, recovering their dynamic evolution as well as the heat and work rates, and we verify that thermodynamic laws are respected. Specifically, we look at the damped harmonic oscillator and the damped two-level system. For the former, we study independently the slow time-dependent perturbation in the oscillator frequency and in the coupling strength. For the latter, we concentrate on the slow modulation of the energy gap between the two levels. Importantly, we are able to find the entropy production rates for each case without explicitly defining nonequilibrium extensions for the entropy functional. This analysis also permits the definition of phenomenological friction coefficients in terms of structural properties of the system-bath composite.