论文标题
基于库仑耦合系统的非本地低温温度计
A non-local cryogenic thermometer based on Coulomb-coupled systems
论文作者
论文摘要
我们研究了四量量子点设置，该设置可用于感知电隔离远程目标储层的温度。 Sánchez等人早些时候想到了这样的设置。 al。 （新物理学杂志，19，113040）作为非本地热力学发动机，并依赖于库仑耦合量子点之间的静电相互作用。库仑偶联和能量过滤的结合导致远程储层温度的总体变化。然后，使用密度矩阵公式对温度计的性能进行了理论研究，并证明与由两个由两个库仑耦合量子点组成的简单温度计相比，四倍量子点设计可确保高温灵敏度和噪声鲁棒性。最后，我们研究了操作状态，并评论基态配置，以实现温度计的最佳性能。本文研究的设置可用于构建高效的非本地低温温度计。
We investigate a quadruple quantum dot setup that can be employed to sense the temperature of an electrically isolated remote target reservoir. Such a setup was conceived earlier by Sánchez et. al. (New Journal of Physics, 19, 113040) as non-local thermodynamic engine and relies on the electrostatic interaction between Coulomb-coupled quantum dots. The conjugation of Coulomb-coupling and energy-filtering results in an overall change in conductance with remote reservoir temperature. The performance of the thermometer is then theoretically investigated using density matrix formulation, and it is demonstrated that the quadruple quantum dot design ensures a superior temperature sensitivity and noise robustness compared to a simple thermometer consisting of two Coulomb-coupled quantum dots. In the end, we investigate the regime of operation and comment on the ground state configuration for optimal performance of the thermometer. The setup investigated in this paper can be employed to construct highly efficient non-local cryogenic thermometers.
