Work and heat for two-level systems in dissipative environments: Strong driving and non-Markovian dynamics
Work and heat for two-level systems in dissipative environments: Strong driving and non-Markovian dynamics
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耗散环境中两级系统的功和热：强驱动和非马尔可夫动力学
DOI：
10.1103/physrevb.91.224303
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
J. Ankerhold
中科院分区：
文献类型：
--
作者：
R. Schmidt;M. F. Carusela;J. P. Pekola;S. Suomela;J. Ankerhold
研究了参数空间域中强驱动二能级系统浸入玻色热浴的一般情况下的功、功矩和热流密度。这尤其包括非马尔科夫动态与中等到强烈的外部驱动力之间的相互作用。将准确的数据与弱耦合方法的预测进行了比较。此外，还讨论了初始热状态中系统-浴关联的作用及其对热流密度的影响。讨论了这些结果与目前在固态器件上的实验活动的相关性。
Work, moments of work, and heat flux are studied for the generic case of a strongly driven two-level system immersed in a bosonic heat bath in domains of parameter space where perturbative treatments fail. This includes in particular the interplay between non-Markovian dynamics and moderate to strong external driving. Exact data are compared with predictions from weak-coupling approaches. Further, the role of system-bath correlations in the initial thermal state and their impact on the heat flux are addressed. The relevance of these results for current experimental activities on solid-state devices is discussed.