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We study a 0-$\pi$ dc superconducting quantum interference device (SQUID) with asymmetric inductances and critical currents of the two Josephson junctions (JJs). By considering such a dc SQUID as a black box with two terminals, we calculate…

Superconductivity · Physics 2015-06-18 E. Goldobin , D. Koelle , R. Kleiner

Superconducting Quantum Interference Devices (SQUIDs) are one of the most popular devices in superconducting electronics. They combine the Josephson effect with the quantization of magnetic flux in superconductors. This gives rise to one of…

Superconductivity · Physics 2018-05-21 M. J. Martínez-Pérez , D. Koelle

Superconducting double-loop interferometers (bi-SQUIDs) have been introduced to produce magnetic flux sensors specifically designed to exhibit ultra-highly linear voltage response as a function of the magnetic flux. These devices are very…

Based on the superconducting quantum interference device (SQUID) equations described by the resistively- and capacitively-shunted junction model coupled to the equation of motion of a damped harmonic oscillator, we provide simulations to…

Analysis Program for Linear Active Circuits (APLAC) is a general-purpose electronics circuit simulator, which has included a built-in model of the Josephson junction (JJ) since late 80's. It capabilities in simulating eg. noisy…

Superconductivity · Physics 2021-03-23 Mikko Kiviranta

A significant portion of electricity consumed worldwide is used to power thermostatically controlled loads (TCLs) such as air conditioners, refrigerators, and water heaters. Because the short-term timing of operation of such systems is…

Adaptation and Self-Organizing Systems · Physics 2018-03-12 Walter Bomela , Anatoly Zlotnik , Jr-Shin Li

The microscopic theory of current carrying states in the ballistic superconducting microchannel is presented. The effects of the contact length L on the Josephson current are investigated. For the temperatures T close to the critical…

Superconductivity · Physics 2009-10-31 Malek Zareyan , Yu. A. Kolesnichenko , A. N. Omelyanchouk

A superconducting quantum interference device (SQUID), functioning as a nonlinear response device, typically requires the incorporation of a flux-locked loop (FLL) circuit to facilitate linear amplification of the current signal transmitted…

Instrumentation and Methods for Astrophysics · Physics 2026-03-02 Nan Li , Xiang-xiang Ren , Le-peng Li , Meng-jie Song , Hao-yu Li , Shi-bo Shu , Ya-qiong Li , Yong-jie Zhang , Xu-fang Li , Yu-dong Gu , Cong-zhan Liu , Hai-feng Li , He Gao , Zheng-wei Li

Smart buildings are the need of the day with increasing demand-supply ratios and deficiency to generate considerably. In any modern non-industrial infrastructure, these demands mainly comprise of thermostatically controlled loads (TCLs),…

Systems and Control · Electrical Eng. & Systems 2019-12-30 Kshitij Singh , Pratik K. Bajaria

An increasing number of experiments require the use of ultrasensitive nanomechanical resonators. Relevant examples are the investigation of quantum effects in mechanical systems [1] or the detection of exceedingly small forces as in…

Instrumentation and Detectors · Physics 2010-07-12 O. Usenko , A. Vinante , G. Wijts , T. H. Oosterkamp

Superconducting metamaterials comprising rf SQUIDs (Superconducting QUantum Interference Devices) have been recently realized and investigated with respect to their tuneability, permeability and dynamic multistability properties. These…

Mesoscale and Nanoscale Physics · Physics 2015-06-19 G. P. Tsironis , N. Lazarides , I. Margaris

We propose the implementation of a Josephson Radiation Comb Generator (JRCG) based on a dc superconducting quantum interference device (SQUID) driven by an external magnetic field. When the magnetic flux crosses a diffraction node of the…

Mesoscale and Nanoscale Physics · Physics 2015-07-06 P. Solinas , S. Gasparinetti , D. Golubev , F. Giazotto

We present the prototype module of our extendible and robust multichannel SQUID magnetometer system. A multi-module arrangement can be implemented by using up to 7 modules. It is intended for high-precision measurements of biomagnetism and…

Instrumentation and Detectors · Physics 2017-08-29 Jan-Hendrik Storm , Dietmar Drung , Martin Burghoff , Rainer Körber

Superconducting thin-films are central to the operation of many kinds of quantum sensors and quantum computing devices: Kinetic Inductance Detectors (KIDs), Travelling-Wave Parametric Amplifiers (TWPAs), Qubits, and Spin-based Quantum…

Superconductivity · Physics 2026-04-15 Songyuan Zhao , Stafford Withington , David J. Goldie , Chris N. Thomas

It is now well established that a Josephson junction made from conventional spin-singlet superconductors containing ferromagnetic layers can carry spin-triplet supercurrent under certain conditions. The first experimental signature of that…

Superconducting quantum interference devices (SQUIDs), single flux-quantum (SFQ) logic circuits, and quantum Josephson junction circuits have been developed into a family of superconductor integrated circuit, and are widely applied for…

Superconductivity · Physics 2023-08-04 Yongliang Wang

We suggest SQUID amplifier configuration intended for millikelvin refrigerators where cooling power is limited and hence high power efficiency is desirable. The configuration operates the SQUIDs in class-AB rather than the traditional…

Instrumentation and Methods for Astrophysics · Physics 2018-10-12 Mikko Kiviranta

We report the design and measurement of Superconducting/normal/superconducting (SNS) proximity DC squids in the long junction limit, i.e. superconducting loops interrupted by two normal metal wires roughly a micrometer long. Thanks to the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 L. Angers , F. Chiodi , J. C. Cuevas , G. Montambaux , M. Ferrier , S. Gueron , H. Bouchiat

We used the asymmetric superconducting quantum interference device (SQUID) technique to extract the current phase relation (CPR) of a Josephson junction with a 3D-topological insulator (TI) Bi2Se3 nanobelt as the barrier. The obtained CPR…

A Josephson tunnel junction transistor based on quasiparticle injection is proposed. Its operation relies on the manipulation of the electron distribution in one of the junction electrodes. This is accomplished by injecting quasiparticle…

Superconductivity · Physics 2008-07-12 F. Giazotto , J. P. Pekola