Analog of a Quantum Heat Engine Using a Single-Spin Qubit
Analog of a Quantum Heat Engine Using a Single-Spin Qubit
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DOI：
10.1103/physrevlett.125.166802
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发表时间：
2020-10-15
影响因子：
8.6
通讯作者：
Nori, Franco
中科院分区：
文献类型：
--
作者：
Ono, K.;Shevchenko, S. N.;Nori, Franco
具有周期性调制能量分裂的量子二能级系统可以提供最小的通用量子热机。给出了硅隧道场效应晶体管中杂质电子自旋这一二能级系统的实验实现和理论描述。在非相干区域，该系统的行为可以类似于奥托热机或冰箱。相干区域可以描述为这两个区域的叠加，在观测到的源漏电流中产生特定的干涉条纹。
A quantum two-level system with periodically modulated energy splitting could provide a minimal universal quantum heat machine. We present the experimental realization and the theoretical description of such a two-level system as an impurity electron spin in a silicon tunnel field-effect transistor. In the incoherent regime, the system can behave analogously to either an Otto heat engine or a refrigerator. The coherent regime could be described as a superposition of those two regimes, producing specific interference fringes in the observed source-drain current.