Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Journal of Low Temperature Physics

Effect of the magnetic-flux variations on SQUID stability

Sergei A. Bulgakov, Vladimir B. Ryabov, V. I. Shnyrkov, D. M. Vavriv

Published Jun 1, 1991• 10 citations
Publisher
DOI
10.1007/bf00683625

Related papers

Influence of magnetic flux variations on the stability of a superconducting quantum magnetometer

Sergei A. Bulgakov, D. M. Vavriv, Vladimir B. Ryabov +1 more

•Jan 1, 1990•0 citations

Some remarks about the flux periodicity in SQUIDS

Milan Odehnal, A. Penttinen

Journal of Low Temperature Physics•Nov 1, 1984•1 citation

A linear magnetic flux-to-voltage transfer function of a differential DC SQUID

I I Soloviev, Vsevolod I. Ruzhickiy, N V Klenov +2 more

Abstract A superconducting quantum interference device with differential output or ‘DSQUID’ was previously proposed for operation in the presence of large common-mode signals. The DSQUID is the differential connection of two identical SQUIDs. Here we show that besides suppression of electromagnetic interference this device provides effective linearization of the DC SQUID voltage response. In the frame of the resistive shunted junction model with zero capacitance, we demonstrate that spur-free dynamic range of the DSQUID magnetic flux-to-voltage transfer function is higher than 100 dB while the total harmonic distortion of a signal is less than 10 −3 % with a peak-to-peak amplitude of a signal being a quarter of half flux quantum, 2Φ a = Φ 0 /8. Analysis of the DSQUID voltage response stability to a variation of circuit parameters shows that DSQUID implementation allows for highly linear magnetic flux-to-voltage transformation at the cost of a high identity of Josephson junctions and high-precision current supply.

arXiv:1903.04222•Superconductor Science and Technology•Mar 6, 2019•10 citations

Metastability in a nanobridge-based hysteretic dc SQUID embedded in a superconducting microwave resonator

Eran Segev, Oren Suchoi, Oleg Shtempluck +2 more

We study the metastable response of a highly hysteretic dc superconducting quantum interference device (SQUID) made of a niobium loop interrupted by two nanobridges. We excite the SQUID with an alternating current and with direct magnetic flux, and find different stability zones forming diamond-like structures in the measured voltage across the SQUID. When such a SQUID is embedded in a transmission line resonator, similar diamond structures are observed in the reflection pattern of the resonator. We calculate the dc-SQUID stability diagram in the plane of the exciting control parameters, both analytically and numerically. In addition, we obtain numerical simulations of the SQUID equations of motion, taking into account temperature variations and nonsinusoidal current-phase relation of the nanobridges. Good agreement is found between experimental and theoretical results.

arXiv:1007.5225•Physical Review B•Mar 17, 2011•4 citations

The effect of the resonant mode structure on flux tunneling in SQUIDs

Alastair I. M. Rae, Colin E Gough

Journal of Low Temperature Physics•Dec 1, 1986•6 citations

Flux-bias stabilization scheme for a radio-frequency amplifier based on a superconducting quantum interference device

Michael Mück, John L. Clarke

A magnetic flux stabilization scheme involving a low-frequency flux-locked loop has been developed to regulate the gain of a radio-frequency amplifier based on a superconducting quantum inteference device (SQUID). The flux-locked loop largely eliminates drifts in the gain arising from drifts in the flux bias. Tests on a microstrip SQUID amplifier operating at 777 MHz inside a superconducting shield show that the peak-to-peak drift in the gain is no more than 0.3 dB/day.

Review of Scientific Instruments•Sep 1, 2001•9 citations
Abstract A superconducting quantum interference device with differential output or ‘DSQUID’ was previously proposed for operation in the presence of large common-mode signals. The DSQUID is the differential connection of two identical SQUIDs. Here we show that besides suppression of electromagnetic interference this device provides effective linearization of the DC SQUID voltage response. In the frame of the resistive shunted junction model with zero capacitance, we demonstrate that spur-free dynamic range of the DSQUID magnetic flux-to-voltage transfer function is higher than 100 dB while the total harmonic distortion of a signal is less than 10 −3 % with a peak-to-peak amplitude of a signal being a quarter of half flux quantum, 2Φ a = Φ 0 /8. Analysis of the DSQUID voltage response stability to a variation of circuit parameters shows that DSQUID implementation allows for highly linear magnetic flux-to-voltage transformation at the cost of a high identity of Josephson junctions and high-precision current supply.
We study the metastable response of a highly hysteretic dc superconducting quantum interference device (SQUID) made of a niobium loop interrupted by two nanobridges. We excite the SQUID with an alternating current and with direct magnetic flux, and find different stability zones forming diamond-like structures in the measured voltage across the SQUID. When such a SQUID is embedded in a transmission line resonator, similar diamond structures are observed in the reflection pattern of the resonator. We calculate the dc-SQUID stability diagram in the plane of the exciting control parameters, both analytically and numerically. In addition, we obtain numerical simulations of the SQUID equations of motion, taking into account temperature variations and nonsinusoidal current-phase relation of the nanobridges. Good agreement is found between experimental and theoretical results.