R.B. Laibowitz, R.H. Koch, et al.
Journal of The Less-Common Metals
We demonstrate that the low-frequency noise in our edge junction dc superconducting quantum interference devices, with a basic 1/f flux noise of 2×10-12 Φ20/Hz at 1 Hz, can all be accounted for in terms of junction critical current fluctuations. A novel modulation readout scheme is able to cancel the effect of junction critical current fluctuations and reduce our total noise to 1×10-12 Φ20/Hz at 0.1 Hz, a level that is three times lower than the lowest flux noise ever previously reported at this frequency.
R.B. Laibowitz, R.H. Koch, et al.
Journal of The Less-Common Metals
D.D. Awschalom, J. Warnock, et al.
QELS 1989
L.R. Narasimhan, C.K.N. Patel, et al.
Applied Physics Letters
A. Levy, J.P. Falck, et al.
Physical Review B