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Asymmetric two-junction SQUIDs with different current-phase relations in the two Josephson junctions, involving higher Josephson harmonics, demonstrate a flux-tunable Josephson diode effect (asymmetry between currents flowing in the…

超导电性 · 物理学 2024-09-27 G. S. Seleznev , Ya. V. Fominov

We report on realization and quantum transport study of a twisted bilayer graphene (tBLG) Josephson junction device. High-quality tBLG employed in the device fabrication is obtained via chemical vapour deposition and the device is…

介观与纳米尺度物理 · 物理学 2020-03-06 Dingran Rui , Luzhao Sun , N. Kang , Hailin Peng , Zhongfan Liu , H. Q. Xu

It is well known that the current-biased Josephson junction (CBJJ) can serve as a Josephson threshold detector (JTD) for the sensitive detection of weak microwave signals. Based on the recent work (PRB {\bf 111}, 024501 (2025)) on the…

量子物理 · 物理学 2025-10-24 Y. Q. Chai , M. Y. Wang , S. N. Wang , P. H. Ouyang , L. F. Wei

We investigate the characteristics and noise performance of rf Superconducting Quantum Interference Devices (SQUIDs) by solving the corresponding Langevin equations numerically and optimizing the model parameters with respect to noise…

超导电性 · 物理学 2008-03-13 Reinhold Kleiner , Dieter Koelle , John Clarke

Hybrid superconductor/semiconductor devices constitute a powerful platform where intriguing topological properties can be investigated. Here we present fabrication methods and analysis of Josephson junctions formed by a high-mobility InAs…

介观与纳米尺度物理 · 物理学 2019-01-15 Stefano Guiducci , Matteo Carrega , Giorgio Biasiol , Lucia Sorba , Fabio Beltram , Stefan Heun

We report on the fabrication and electrical transport properties of gate-tunable superconducting quantum interference devices (SQUIDs), made of semiconducting PbS nanowire contacted with PbIn superconducting electrodes. Applied with a…

介观与纳米尺度物理 · 物理学 2016-01-08 Hong-Seok Kim , Bum-Kyu Kim , Yiming Yang , Xingyue Peng , Soon-Gul Lee , Dong Yu , Yong-Joo Doh

We consider the superconducting phase in a moving superconductor and show that it depends on the displacement flux. Generalized constitutive relations between the phase of a superconducting interference device (SQUID) and the position of…

超导电性 · 物理学 2015-06-24 François Konschelle , Yaroslav M. Blanter

The scanning superconducting quantum interference device (SQUID) fabricated on the tip of a sharp quartz pipette (SQUID-on-tip) has emerged as a versatile tool for nanoscale imaging of magnetic, thermal, and transport properties of…

As the penetration of intermittent energy sources grows substantially, loads will be required to play an increasingly important role in compensating the fast time-scale fluctuations in generated power. Recent numerical modeling of…

统计力学 · 物理学 2012-04-13 Soumya Kundu , Nikolai Sinitsyn , Scott Backhaus , Ian Hiskens

We review the recent progress in direct active cooling of the quantum-electric degrees freedom in engineered circuits, or quantum-circuit refrigeration. In 2017, the invention of a quantum-circuit refrigerator (QCR) based on photon-assisted…

It is customary to use arrays of superconducting quantum interference devices (SQUIDs) for implementing magnetic field-tunable inductors. Here, we demonstrate an equivalent tunability in a (SQUID-free) array of single Al/AlOx/Al Josephson…

超导电性 · 物理学 2024-12-10 Roman Kuzmin , Nitish Mehta , Nicholas Grabon , Vladimir E. Manucharyan

We propose a new type of a transition edge sensor based on an Al/AlOx/Ti/AlOx/Al superconductor - insulator - superconductor - insulator - superconductor (SIS'IS) structure. It exhibits sharp dependence of zero bias resistance on…

介观与纳米尺度物理 · 物理学 2014-09-03 Timothé Faivre , Dmitry Golubev , Jukka P. Pekola

Josephson current of spin-entangled electrons through the two branches of a SQUID-like structure with two quantum dots exhibits a magnetic-flux response different from the conventional Josephson current. Due to their interference, the…

超导电性 · 物理学 2011-11-15 Zhi Wang , Xiao Hu

Cryogenic microcalorimeters are key tools for high-resolution X-ray spectroscopy due to their excellent energy resolution and quantum efficiency close to 100%. Multiple types of microcalorimeters exist, some of which have already proven…

仪器与探测器 · 物理学 2023-10-26 Constantin Schuster , Sebastian Kempf

Short circuit fault currents are increasing due to growing demand for electricity and high complexity in power systems. Because the fault currents reach the highest value which the breakers are unable to restrict, the electrical grid…

系统与控制 · 电气工程与系统科学 2022-06-16 Aydin Zaboli

Superconducting single-flux-quantum (SFQ) circuits have so far been developed and optimized for operation at or above helium temperatures. The SFQ approach, however, should also provide potentially viable and scalable control and read-out…

超导电性 · 物理学 2009-11-11 A. M. Savin , J. P. Pekola , D. V. Averin , V. K. Semenov

We suggest a single-photon thermal detector based on the abrupt jump of the critical current of a temperature-biased tunnel Josephson junction formed by different superconductors, working in the dissipationless regime. The electrode with…

This letter presents fabrication and characterization of an optimized SQUIPT (superconducting quantum interference proximity transistor). The present device, characterized with reduced tunnel junction area and shortened normal-metal…

超导电性 · 物理学 2013-10-31 Robab Najafi Jabdaraghi , Matthias Meschke , Jukka Pekola

We demonstrate that thermoelectric signal as well as dc Josephson current may be severely enhanced in multi-terminal superconducting hybrid nanostructures exposed to a temperature gradient. At temperatures $T$ strongly exceeding the…

介观与纳米尺度物理 · 物理学 2020-05-13 Mikhail S. Kalenkov , Pavel E. Dolgirev , Andrei D. Zaikin

The Josephson junction (JJ) is the corner stone of superconducting electronics and quantum information processing. While the technology for fabricating low $T_{c}$ JJ is mature and delivers quantum circuits able to reach the "quantum…