Title :
Sensitivity of the balanced Josephson-junction comparator
Author :
Filippov, T.V. ; Kornev, V.K.
Author_Institution :
Dept. of Phys., Moscow State Univ., USSR
fDate :
3/1/1991 12:00:00 AM
Abstract :
The sensitivity of a balanced comparator composed of two overdamped Josephson junctions fed by single flux pulses is calculated, taking into account both thermal and quantum fluctuations. The results of the analysis are compared with those of recent experiments. Ultimate resolution of the balanced comparator with feasible junction parameters is estimated to be as high as ~50 pA/Hz1/2 at 4 K and ~10 pA/Hz1/2 at T→0 K. Performance limits of the device are compared with those of its single-junction counterpart
Keywords :
Josephson effect; comparators (circuits); sensitivity analysis; superconducting junction devices; Josephson-junction; balanced comparator; overdamped junctions; quantum fluctuations; sensitivity; single flux pulses; thermal fluctuations; Artificial intelligence; Circuits; Current measurement; Fluctuations; Josephson effect; Josephson junctions; Parameter estimation; Physics; Potential energy; Smoothing methods;
Journal_Title :
Magnetics, IEEE Transactions on
