Two-stage amplifier based on a double relaxation oscillation superconducting quantum interference device

M. Podt; M.J. van Duuren; A.W. Hamster; J. Flokstra; H. Rogalla

doi:10.1063/1.125001

Two-stage amplifier based on a double relaxation oscillation superconducting quantum interference device

M. Podt
, M.J. van Duuren
, A.W. Hamster
, J. Flokstra
, H. Rogalla

Research output: Contribution to journal › Article › Academic › peer-review

22 Citations (Scopus)

9 Downloads (Pure)

Abstract

A low-noise single-chip two-stage superconducting quantum interference device (SQUID) system with a double relaxation oscillation SQUID as the second stage has been realized. The system was operated in a direct voltage readout mode, with a closed loop bandwidth up to 1 MHz. Operated at 4.2 K, the white flux noise measured in flux locked loop was 1.3μΦ0/√Hz, corresponding to an energy sensitivity of ε≈27h. Owing to the large flux-to-voltage transfer of up to 3.6mV/Φ0, the room-temperature preamplifier noise did not dominate the overall flux noise.

Original language	English
Pages (from-to)	2316-2318
Number of pages	3
Journal	Applied physics letters
Volume	75
Issue number	15
DOIs	https://doi.org/10.1063/1.125001
Publication status	Published - 1999

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10.1063/1.125001

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title = "Two-stage amplifier based on a double relaxation oscillation superconducting quantum interference device",

abstract = "A low-noise single-chip two-stage superconducting quantum interference device (SQUID) system with a double relaxation oscillation SQUID as the second stage has been realized. The system was operated in a direct voltage readout mode, with a closed loop bandwidth up to 1 MHz. Operated at 4.2 K, the white flux noise measured in flux locked loop was 1.3μΦ0/√Hz, corresponding to an energy sensitivity of ε≈27h. Owing to the large flux-to-voltage transfer of up to 3.6mV/Φ0, the room-temperature preamplifier noise did not dominate the overall flux noise.",

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author = "M. Podt and \{van Duuren\}, M.J. and A.W. Hamster and J. Flokstra and H. Rogalla",

year = "1999",

doi = "10.1063/1.125001",

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journal = "Applied physics letters",

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T1 - Two-stage amplifier based on a double relaxation oscillation superconducting quantum interference device

AU - Podt, M.

AU - van Duuren, M.J.

AU - Hamster, A.W.

AU - Flokstra, J.

AU - Rogalla, H.

PY - 1999

Y1 - 1999

N2 - A low-noise single-chip two-stage superconducting quantum interference device (SQUID) system with a double relaxation oscillation SQUID as the second stage has been realized. The system was operated in a direct voltage readout mode, with a closed loop bandwidth up to 1 MHz. Operated at 4.2 K, the white flux noise measured in flux locked loop was 1.3μΦ0/√Hz, corresponding to an energy sensitivity of ε≈27h. Owing to the large flux-to-voltage transfer of up to 3.6mV/Φ0, the room-temperature preamplifier noise did not dominate the overall flux noise.

AB - A low-noise single-chip two-stage superconducting quantum interference device (SQUID) system with a double relaxation oscillation SQUID as the second stage has been realized. The system was operated in a direct voltage readout mode, with a closed loop bandwidth up to 1 MHz. Operated at 4.2 K, the white flux noise measured in flux locked loop was 1.3μΦ0/√Hz, corresponding to an energy sensitivity of ε≈27h. Owing to the large flux-to-voltage transfer of up to 3.6mV/Φ0, the room-temperature preamplifier noise did not dominate the overall flux noise.

KW - n/a OA procedure

U2 - 10.1063/1.125001

DO - 10.1063/1.125001

M3 - Article

SN - 0003-6951

VL - 75

SP - 2316

EP - 2318

JO - Applied physics letters

JF - Applied physics letters

IS - 15

ER -

Two-stage amplifier based on a double relaxation oscillation superconducting quantum interference device

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