Manzano Daniel, Tiersch Markus, Asadian Ali, Briegel Hans J
Institute for Theoretical Physics, University of Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria, Europe.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Dec;86(6 Pt 1):061118. doi: 10.1103/PhysRevE.86.061118. Epub 2012 Dec 13.
We analyze the steady-state energy transfer in a chain of coupled two-level systems connecting two thermal reservoirs. Through an analytic treatment we find that the energy current is independent of the system size, hence violating Fourier's law of heat conduction. The classical diffusive behavior in Fourier's law of heat conduction can be recovered by introducing decoherence to the quantum systems constituting the chain. We relate these results to recent discussions of energy transport in biological light-harvesting systems, and discuss the role of quantum coherence and entanglement.
我们分析了连接两个热库的耦合二能级系统链中的稳态能量转移。通过解析处理，我们发现能量流与系统大小无关，因此违反了傅里叶热传导定律。通过对构成链的量子系统引入退相干，可以恢复傅里叶热传导定律中的经典扩散行为。我们将这些结果与最近关于生物光捕获系统中能量传输的讨论联系起来，并讨论了量子相干和纠缠的作用。
