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Proceedings Paper

Superconducting quantum detectors
Author(s): Nathan Bluzer; Martin G. Forrester
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Paper Abstract

The discovery of high temperature superconductors (HTS) spawned many potential applications, including optical detectors. Realizing viable superconducting detectors requires achieving performance superior to competing and more mature semiconductor detector technologies, and quantum detector technologies in particular. We review why quantum detectors are inherently more sensitive than thermal or bolometric detectors. This sensitivity advantage suggests that for operation at cryogenic temperatures we should be developing only quantum superconducting detectors. Accordingly, we introduce and describe the structure and the operation of a superconducting quantum detector with a SQUID read-out circuit. The superconducting quantum detector, consisting of a superconducting loop, produces a photosignal in response to photoinduced changes in the condensate's kinetic inductance. The superconducting quantum detector is designed to operate only in the superconducting state and not in the resistive or transition states.

Paper Details

Date Published: 1 November 1993
PDF: 11 pages
Proc. SPIE 2020, Infrared Technology XIX, (1 November 1993); doi: 10.1117/12.160551
Show Author Affiliations
Nathan Bluzer, Westinghouse Advanced Technology Labs. (United States)
Martin G. Forrester, Westinghouse Science & Technology Ctr. (United States)

Published in SPIE Proceedings Vol. 2020:
Infrared Technology XIX
Bjorn F. Andresen; Freeman D. Shepherd, Editor(s)

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