High sensitivity double relaxation oscillation superconducting quantum interference devices

Derk Jan Adelerhof; Jun Kawai; Gen Uehara; Hisashi Kado

doi:10.1063/1.112582

High sensitivity double relaxation oscillation superconducting quantum interference devices

Derk Jan Adelerhof, Jun Kawai, Gen Uehara, Hisashi Kado

Faculty of Science and Technology

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Abstract

Double relaxation oscillation superconducting quantum interference devices (SQUIDs) (DROSs) have been fabricated with estimated relaxation frequencies up to 14 GHz. Both the intrinsic flux noise and the performance in a flux locked loop with direct voltage readout have been studied. In flux locked loop, a noise level of 0.55 μφ0/√Hz corresponding to an energy sensitivity of 34 h has been obtained for a DROS with a SQUID inductance of 29 pH. The intrinsic sensitivity improves with increasing relaxation frequency, leveling off to a value of 13 h at relaxation frequencies higher than about 3 GHz.

Original language	English
Pages (from-to)	2606-2608
Number of pages	3
Journal	Applied physics letters
Volume	65
Issue number	20
DOIs	https://doi.org/10.1063/1.112582
Publication status	Published - 1994

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title = "High sensitivity double relaxation oscillation superconducting quantum interference devices",

abstract = "Double relaxation oscillation superconducting quantum interference devices (SQUIDs) (DROSs) have been fabricated with estimated relaxation frequencies up to 14 GHz. Both the intrinsic flux noise and the performance in a flux locked loop with direct voltage readout have been studied. In flux locked loop, a noise level of 0.55 μφ0/√Hz corresponding to an energy sensitivity of 34 h has been obtained for a DROS with a SQUID inductance of 29 pH. The intrinsic sensitivity improves with increasing relaxation frequency, leveling off to a value of 13 h at relaxation frequencies higher than about 3 GHz.",

author = "Adelerhof, {Derk Jan} and Jun Kawai and Gen Uehara and Hisashi Kado",

year = "1994",

doi = "10.1063/1.112582",

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journal = "Applied physics letters",

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T1 - High sensitivity double relaxation oscillation superconducting quantum interference devices

AU - Adelerhof, Derk Jan

AU - Kawai, Jun

AU - Uehara, Gen

AU - Kado, Hisashi

PY - 1994

Y1 - 1994

N2 - Double relaxation oscillation superconducting quantum interference devices (SQUIDs) (DROSs) have been fabricated with estimated relaxation frequencies up to 14 GHz. Both the intrinsic flux noise and the performance in a flux locked loop with direct voltage readout have been studied. In flux locked loop, a noise level of 0.55 μφ0/√Hz corresponding to an energy sensitivity of 34 h has been obtained for a DROS with a SQUID inductance of 29 pH. The intrinsic sensitivity improves with increasing relaxation frequency, leveling off to a value of 13 h at relaxation frequencies higher than about 3 GHz.

AB - Double relaxation oscillation superconducting quantum interference devices (SQUIDs) (DROSs) have been fabricated with estimated relaxation frequencies up to 14 GHz. Both the intrinsic flux noise and the performance in a flux locked loop with direct voltage readout have been studied. In flux locked loop, a noise level of 0.55 μφ0/√Hz corresponding to an energy sensitivity of 34 h has been obtained for a DROS with a SQUID inductance of 29 pH. The intrinsic sensitivity improves with increasing relaxation frequency, leveling off to a value of 13 h at relaxation frequencies higher than about 3 GHz.

U2 - 10.1063/1.112582

DO - 10.1063/1.112582

M3 - Article

VL - 65

SP - 2606

EP - 2608

JO - Applied physics letters

JF - Applied physics letters

SN - 0003-6951

IS - 20

ER -

High sensitivity double relaxation oscillation superconducting quantum interference devices

Abstract

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