Thermodynamic uncertainty relations for coherently driven open quantum systems
Thermodynamic uncertainty relations for coherently driven open quantum systems
复制标题
相干驱动的开放量子系统的热力学不确定性关系
DOI:
10.1088/1751-8121/ac0c8f
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Menczel P
中科院分区:
文献类型:
--
作者:
Menczel P
In classical Markov jump processes, current fluctuations can only be reduced at the cost of increased dissipation. To explore how quantum effects influence this trade-off, we analyze the uncertainty of steady-state currents in Markovian open quantum systems. We first consider three instructive examples and then systematically minimize the product of uncertainty and entropy production for small open quantum systems. As our main result, we find that the thermodynamic cost of reducing fluctuations can be lowered below the classical bound by coherence. We conjecture that this cost can be made arbitrarily small in quantum systems with sufficiently many degrees of freedom. Our results thereby provide a general guideline for the design of thermal machines in the quantum regime that operate with high thermodynamic precision, meaning low dissipation and small fluctuations around average values.
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