Title :
Fully quantum analysis of radiation detection in an SIS
Author :
Johnson, M.W. ; Wengler, M.J.
Author_Institution :
Rochester Univ., NY, USA
fDate :
3/1/1993 12:00:00 AM
Abstract :
The authors calculate the current response of a superconductor-insulator-superconductor (SIS) to second order in photon operators and shows that, under certain conditions, an ideal SIS junction can be operated as a photon detector. The theory presented is a quantum generalization of the semiclassical diode theory developed by Werthamer (1966) and Tucker (1979). The dependence of the DC tunneling current on the number of photons present on the transmission line is shown. It is found that one electron tunnels for each photon absorbed by the junction.<>
Keywords :
microwave detectors; mixers (circuits); receivers; superconducting junction devices; superconducting microwave devices; DC tunneling current; current response; mixers; photodetection theory; photon detector; photon operators; quantum generalization; radiation detection; semiclassical diode theory; superconductor-insulator-superconductor; tunnel junction; Bandwidth; Electrons; Hafnium; Microwave theory and techniques; Photodetectors; Radiation detectors; Superconducting microwave devices; Superconducting transmission lines; Transmission line theory; Tunneling;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
