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arXiv 0705.0075cond-mat.stat-mech
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作为量子热力学机器的驱动自旋系统:基本极限

Driven Spin Systems as Quantum Thermodynamic Machines: Fundamental Limits

M. J. Henrich, M. Michel, G. Mahler

摘要:

我们表明,耦合二能级系统,如量子比特研究量子信息可以作为一个热力学机器。至少有三个量子位或自旋是必要的,并安排在一个链。该系统连接在两个分体式浴槽之间,中间的工作旋转由外部驱动。该机器执行卡诺型循环,并能够根据浴$ΔT$的温差和纺丝系统$ΔE$中的能量差作为热泵或发动机工作。可以表明,效率是$ΔT$和$ΔE$的函数。

英文摘要:

We show that coupled two level systems like qubits studied in quantum information can be used as a thermodynamic machine. At least three qubits or spins are necessary and arranged in a chain. The system is interfaced between two split baths and the working spin in the middle is externally driven. The machine performs Carnot-type cycles and is able to work as heat pump or engine depending on the temperature difference of the baths $ΔT$ and the energy differences in the spin system $ΔE$. It can be shown that the efficiency is a function of $ΔT$ and $ΔE$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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