论文标题
感应超导量子干扰接近晶体管：L-Squipp
Inductive Superconducting Quantum Interference Proximity Transistor: the L-SQUIPT
论文作者
论文摘要
提出并分析了具有增强性能的型量子干扰近端晶体管的设计。干涉仪基于双环结构，每个环都包含超导体正常的金属 - 螺旋桨介质约瑟夫森弱链接，并且读出电极的形式以超导体隧道探针的形式实现。我们的设计允许改善晶体管与外部磁场的耦合并增加特征磁通传递函数，从而导致改进的超敏感量子限制磁力计。通过利用感应性和分散读数方案，在后一种情况下，在耗散性或无耗散的约瑟夫森（Josephson）类似约瑟夫森（Josephson）的操作模式下，在耗散性和耗散无约瑟夫森（Josephson）类似约瑟夫森（Josephson）的操作模式下，在耗散性和无耗散的约瑟夫森样手术模式中分析了L-squipt行为。改进的性能使L-squimp有望用于磁场检测以及量子技术中的特定应用，在Millikelvin温度下需要响应式分散磁力测定法。
The design for an inductive superconducting quantum interference proximity transistor with enhanced performance, the L-SQUIPT, is presented and analyzed. The interferometer is based on a double-loop structure, where each ring comprises a superconductor-normal metal-superconductor mesoscopic Josephson weak-link and the read-out electrode is implemented in the form of a superconducting tunnel probe. Our design allows both to improve the coupling of the transistor to the external magnetic field and to increase the characteristic magnetic flux transfer functions, thereby leading to an improved ultrasensitive quantum limited magnetometer. The L-SQUIPT behavior is analyzed in both the dissipative and the dissipationless Josephson-like operation modes, in the dissipative or in the dissipationless Josephson-like operation mode in the latter case by exploiting both an inductive and a dispersive readout scheme. The improved performance makes the L-SQUIPT promising for magnetic field detection as well as for specific applications in quantum technology, where a responsive dispersive magnetometry at milliKelvin temperatures is required.
