Superconducting quantum detectors

Nathan Bluzer; Martin G. Forrester

doi:10.1117/12.160551

1 November 1993 Superconducting quantum detectors

Nathan Bluzer, Martin G. Forrester

Proceedings Volume 2020, Infrared Technology XIX; (1993) https://doi.org/10.1117/12.160551
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

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.

Citation Download Citation

Nathan Bluzer and Martin G. Forrester "Superconducting quantum detectors", Proc. SPIE 2020, Infrared Technology XIX, (1 November 1993); https://doi.org/10.1117/12.160551

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