quasi-particle detector

quasi-particle detector

[¦kwä·zē ¦pard·ə·kəl di‚tek·tər]
(engineering)
A detector of electromagnetic radiation at wavelengths close to 1 millimeter, based on the tunneling of single electrons (more precisely, quasi-particles) through a tunnel junction consisting of an oxide barrier between two superconductors, with a responsivity of one tunneling electron for each microwave photon absorbed.