Ojanen Teemu, Jauho Antti-Pekka
Low Temperature Laboratory, Helsinki University of Technology, FIN-02015 HUT, Finland.
Phys Rev Lett. 2008 Apr 18;100(15):155902. doi: 10.1103/PhysRevLett.100.155902. Epub 2008 Apr 17.
We show that the heat transport between two bodies, mediated by electromagnetic fluctuations, can be controlled with an intermediate quantum circuit--leading to the device concept of a mesoscopic photon heat transistor (MPHT). Our theoretical analysis is based on a novel Meir-Wingreen-Landauer-type of conductance formula, which gives the photonic heat current through an arbitrary circuit element coupled to two dissipative reservoirs at finite temperatures. As an illustration we present an exact solution for the case when the intermediate circuit can be described as an electromagnetic resonator. We discuss in detail how the MPHT can be implemented experimentally in terms of a flux-controlled SQUID circuit.
我们表明，由电磁涨落介导的两个物体之间的热传输可以通过一个中间量子电路来控制，这引出了介观光子热晶体管（MPHT）的器件概念。我们的理论分析基于一种新颖的迈尔 - 温格林 - 朗道尔型电导公式，该公式给出了通过与处于有限温度的两个耗散库耦合的任意电路元件的光子热电流。作为一个示例，我们给出了中间电路可描述为电磁谐振器情况下的精确解。我们详细讨论了如何根据磁通控制的超导量子干涉装置（SQUID）电路在实验中实现MPHT。
