Superconducting quantum interference device with very low magnetic flux noise energy
- 15 July 1982
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 41 (2), 197-199
- https://doi.org/10.1063/1.93460
Abstract
We have fabricated dc superconducting quantum interference devices incorporating Josephsontunnel junctions with an inductance of about 2 pH and a capacitance per junction of about 0.3 pF. The lowest measured flux noise energy was 3.2 h/ at 1.4 K at a frequency of 202 kHz. When the 1/fnoise was subtracted, the white noise energy decreased from around 3h/ at 4.2 K to below 2h/ at 1.4 K.Keywords
This publication has 6 references indexed in Scilit:
- Low-noise tunnel junction dc SQUID’sApplied Physics Letters, 1981
- Quantum noise theory for the dc SQUIDApplied Physics Letters, 1981
- Uncertainty principle limit to the energy sensitivity of SQUID’s and other linear amplifiersApplied Physics Letters, 1981
- Ultra low noise Nb DC SQUIDsIEEE Transactions on Magnetics, 1981
- Advances in SQUID magnetometersIEEE Transactions on Electron Devices, 1980
- dc SQUID: Noise and optimizationJournal of Low Temperature Physics, 1977