Title :
Ultimate sensitivity of the single Cooper pair tunneling electrometer
Author :
Zorin, Alexander B.
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
fDate :
4/1/1997 12:00:00 AM
Abstract :
The small capacitance superconducting two-junction structure shunted as a whole by a small-size resistor has been theoretically studied. When the bias current slightly exceeds the critical current of the system, the nonzero average voltage on the resistor and its response to small variations of the polarization charge Q0 on the common electrode appear. The sensitivity of such an electrometer has been optimized
Keywords :
Josephson effect; charge measurement; electrometers; sensitivity; superconducting device noise; superconducting junction devices; Josephson effects; bias current; charging effects; common electrode; critical current; nonzero average voltage; optimisation; polarization charge; single Cooper pair tunneling electrometer; small capacitance superconducting two-junction structure; small-size resistor; tunnel junctions; Capacitance; Circuits; Critical current; Electrodes; Electrons; HEMTs; Josephson junctions; Polarization; Resistors; Tunneling;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
