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

Physica C Superconductivity

Stochastic resonance-based input circuits for SQUIDs

Oleg G. Turutanov, A. N. Omelyanchouk, V. I. Shnyrkov, Yu. P. Bliokh

Published Aug 1, 2002• 5 citations
Publisher
DOI
10.1016/s0921-4534(02)00679-2

Related papers

Stochastic signal enhancement in SQUIDs

Igor Kh. Kaufman, D. G. Luchinsky, P. V. E. McClintock +2 more

Czechoslovak Journal of Physics•May 1, 1996•0 citations

Modeling the dc superconducting quantum interference device coupled to the multiturn input coil

Keiji Enpuku, Keiji Yoshida

In order to study the effect of a multiturn input coil on superconducting quantum interference device (SQUID) characteristics, the radio frequency (rf) properties of the coupling circuit between the SQUID coil and the input coil are studied. For the measurement of rf properties of the coupling circuit, the so-called expanded model of the coupling circuit using normal metals was adopted, which is shown to be very useful for this purpose. It is shown that the SQUID coil cannot be expressed by a simple inductance when the SQUID coil is coupled to the input coil, i.e., many resonant structures are observed in rf properties of the coupling circuit. It is also shown that the damping resistance is useful in suppressing the resonant structures. Using the experimental results, a circuit model of the SQUID coupled to the multiturn input coil is proposed.

Journal of Applied Physics•May 15, 1991•34 citations

NOISE CONTRIBUTIONS TO SQUID CIRCUITS DUE TO TEMPERATURE FLUCTUATIONS

J. H. Claassen, Sebastian Wolf, D. U. Gubser +1 more

De Gruyter eBooks•Dec 31, 1986•0 citations

Input impedance of a single-contact SQUID

S.S. Tinchev

The performance of an rf SQUID is analyzed when the pumping frequency ..omega.. is comparable to the resonant frequency R/L of the interferometer. The SQUID input impedance is measured for different values of the parameter q = ..omega..L/R< or =..pi../4, input signal frequency, and pump frequency mismatch relative to the resonant frequency of the oscillating SQUID circuit. It is shown that the input resistance and input inductance of the squId may be either positive or negative.

•Oct 1, 1982•0 citations

Measurement of the dynamic input impedance of a dc superconducting quantum interference device at audio frequencies

P. Falferi, R. Mezzena, Stefano Vitale +1 more

The coupling effects of a commercial dc superconducting quantum interference device (SQUID) to an electrical LC resonator which operates at audio frequencies (≈1 kHz) with quality factors Q≈106 are presented. The variations of the resonance frequency of the resonator as functions of the flux applied to the SQUID are due to the SQUID dynamic inductance in good agreement with the predictions of a model. The variations of the quality factor point to a feedback mechanism between the output of the SQUID and the input circuit.

Applied Physics Letters•Aug 18, 1997•21 citations

Switching Probability and Performance in Single-Chip SQUIDs

Norio Fujimaki, K. Gotoh, S. Hasuo

Springer proceedings in physics•Jan 1, 1992•3 citations
In order to study the effect of a multiturn input coil on superconducting quantum interference device (SQUID) characteristics, the radio frequency (rf) properties of the coupling circuit between the SQUID coil and the input coil are studied. For the measurement of rf properties of the coupling circuit, the so-called expanded model of the coupling circuit using normal metals was adopted, which is shown to be very useful for this purpose. It is shown that the SQUID coil cannot be expressed by a simple inductance when the SQUID coil is coupled to the input coil, i.e., many resonant structures are observed in rf properties of the coupling circuit. It is also shown that the damping resistance is useful in suppressing the resonant structures. Using the experimental results, a circuit model of the SQUID coupled to the multiturn input coil is proposed.
The coupling effects of a commercial dc superconducting quantum interference device (SQUID) to an electrical LC resonator which operates at audio frequencies (≈1 kHz) with quality factors Q≈106 are presented. The variations of the resonance frequency of the resonator as functions of the flux applied to the SQUID are due to the SQUID dynamic inductance in good agreement with the predictions of a model. The variations of the quality factor point to a feedback mechanism between the output of the SQUID and the input circuit.