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Superconducting quantum interference devices (SQUIDs) are state-of-the-art in ultra-sensitive magnetometry; however, conventional SQUID devices are fundamentally limited by the inherently nonlinear and periodic nature of their transfer…

Superconductivity · Physics 2026-03-02 Angelo Greco , Giorgio De Simoni , Francesco Giazotto

As the quantum generation of electronics takes the stage, a cast of important support electronics is needed to connect these novel devices to our classical worlds. In the case of superconducting electronics, this is a challenge because the…

Applied Physics · Physics 2019-10-25 Hao Li , Ethan Y. Cho , Han Cai , Shane A. Cybart

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…

We present measurements of an amplifier operating at 3.8 GHz with 150 MHz of bandwidth based on the microstrip input-coil resonance of a dc superconducting quantum interference device (SQUID) with submicron Josephson junctions. The noise…

Superconductivity · Physics 2015-06-05 M. P. DeFeo , B. L. T. Plourde

Superconducting quantum interference devices (SQUIDs) are used for applications ranging from sensitive magnetometers to low-temperature electronics and quantum computation. We introduce a planar nano SQUID that was made with a single…

Applied Physics · Physics 2019-04-17 Itamar Holzman , Yachin Ivry

We report on the fabrication and electrical transport properties of superconducting quantum interference devices (SQUIDs) made from a (Bi_{1-x}Sb_x)_2Se_3 topological insulator (TI) nanoribbon (NR) connected with Pb0.5In0.5 superconducting…

Superconductivity · Physics 2018-01-25 Nam-Hee Kim , Hong-Seok Kim , Yiming Yang , Xingyue Peng , Dong Yu , Yong-Joo Doh

We report the fabrication and characterization of superconducting quantum interference devices (SQUIDs) based on InAs nanowires and vanadium superconducting electrodes. These mesoscopic devices are found to be extremely robust against…

Mesoscale and Nanoscale Physics · Physics 2011-06-06 Panayotis Spathis , Subhajit Biswas , Stefano Roddaro , Lucia Sorba , Francesco Giazotto , Fabio Beltram

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…

Mesoscale and Nanoscale Physics · Physics 2016-01-08 Hong-Seok Kim , Bum-Kyu Kim , Yiming Yang , Xingyue Peng , Soon-Gul Lee , Dong Yu , Yong-Joo Doh

Superconducting quantum interference devices (SQUIDs) that incorporate two superconductor/insulator/superconductor (SIS) Josephson junctions in a closed loop form the core of some of the most sensitive detectors of magnetic and electric…

Mesoscale and Nanoscale Physics · Physics 2021-08-11 Taewan Noh , Andrew Kindseth , Venkat Chandrasekhar

We investigated, at temperature $4.2\,\mathrm{K}$, electric transport, flux noise and resulting spin sensitivity of miniaturized Nb direct current superconducting quantum interference devices (SQUIDs) based on submicron Josephson junctions…

Superconductivity · Physics 2015-05-28 J. Nagel , O. F. Kieler , T. Weimann , R. Wölbing , J. Kohlmann , A. B. Zorin , R. Kleiner , D. Koelle , M. Kemmler

We report the fabrication and characterization of superconducting quantum interference devices (SQUIDs) made of Sb-doped Bi2Se3 topological insulator (TI) nanoribbon (NR) contacted with PbIn superconducting electrodes. When an external…

Mesoscale and Nanoscale Physics · Physics 2020-10-06 Nam-Hee Kim , Hong-Seok Kim , Yasen Hou , Dong Yu , Yong-Joo Doh

We report the fabrication of a directly coupled superconducting quantum interference device (SQUID) magnetometer in MgB2 using a focused ion beam (FIB) to create Josephson junctions in a 70 nm thick film of MgB2. The SQUID shows a voltage…

Superconductivity · Physics 2009-11-07 G. Burnell , D. -J. Kang , D. A. Ansell , H. -N. Lee , S. -H. Moon , E. J. Tarte , M. G. Blamire

We have investigated asymmetrically shunted Nb/Al-AlO$_x$/Nb direct current (dc) superconducting quantum interference devices (SQUIDs). While keeping the total resistance $R$ identical to a comparable symmetric SQUID with $R^{-1} = R_1^{-1}…

Superconductivity · Physics 2015-06-05 M. Rudolph , J. Nagel , J. M. Meckbach , M. Kemmler , M. Siegel , K. Ilin , D. Koelle , R. Kleiner

Here we report the fabrication and characterization of fully superconducting quantum interference proximity transistors (SQUIPTs) based on the implementation of vanadium (V) in the superconducting loop. At low temperature, the devices show…

Mesoscale and Nanoscale Physics · Physics 2017-09-06 Nadia Ligato , Giampiero Marchegiani , Pauli Virtanen , Elia Strambini , Francesco Giazotto

We report on the fabrication and measurement results of the electrical transport properties of superconductor-normal metal-superconductor (SNS) weak links, made of PbIn superconductor and Au metal. The maximum supercurrent reaches up to ~ 6…

Superconductivity · Physics 2017-01-17 Nam-Hee Kim , Bum-Kyu Kim , Hong-Seok Kim , Yong-Joo Doh

We present the design, realization and performance of a three-axis vector nano Superconducting QUantum Interference Device (nanoSQUID). It consists of three mutually orthogonal SQUID nanoloops that allow distinguishing the three components…

Superconductivity · Physics 2016-06-24 M. J. Martínez-Pérez , D. Gella , B. Müller , V. Morosh , R. Wöbling , J. Sesé , O. Kieler , R. Kleiner , D. Koelle

We report on a scanned superconducting quantum interference device (SQUID) microscope operating in a cryogen-free cryostat, with the capability of up to forty RF connections with 20 GHz bandwidth to a device under test. The system utilizes…

Superconductivity · Physics 2025-09-10 Ian W. Haygood , Bochao Xu , John Biesecker , Michael L. Schneider

We propose a single photon detector based on a superconducting quantum interference device (SQUID) with superconductor-normal metal-superconductor Josephson weak links. One of the two Josephson junctions is connected to an antenna, and is…

Superconductivity · Physics 2018-08-22 P. Solinas , F. Giazotto , G. P. Pepe

DC superconducting quantum interference devices (dc-SQUIDs) were fabricated in Co-doped BaFe2As2 epitaxial films on (La, Sr)(Al, Ta)O3 bicrystal substrates with 30deg misorientation angles. The 18 x 8 micro-meter^2 SQUID loop with an…

Superconducting interferometers are quantum devices able to transduce a magnetic flux into an electrical output with excellent sensitivity, integrability and power consumption. Yet, their voltage response is intrinsically non-linear, a…

Superconductivity · Physics 2023-05-23 Giorgio De Simoni , Francesco Giazotto
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