ACTIVE SUPERCONDUCTING DETECTOR Russian patent published in 2023 - IPC H01L23/00 

FIELD: electromagnetic signals.

SUBSTANCE: invention can be used to detect ultra-small signals in the range of millimetre and submillimetre wavelengths, as well as infrared radiation, including in radio astronomy. Device parameters for a specific frequency range can be calculated using standard electromagnetic modelling methods, and the chip is manufactured using thin-film technology. The technical result achieved in the invention consists in a fundamental improvement in the sensitivity of a superconducting thermoresistive sensor near the fundamental threshold of detector sensitivity, limited by quantum fluctuations of the detected radiation, as well as in the technical simplicity of obtaining such a result. The technical result is achieved in the invention due to a new solution for integrating an ultra-low-noise parametric amplifier based on a PT-SQUID in the immediate vicinity of the detector. This ensures that a useful signal is transmitted from the superconducting thermoresistive sensor to the preamplifier with virtually no loss, which is similar to the radio engineering principle called "active detector".

EFFECT: fundamental improvement in the sensitivity of a superconducting thermoresistive sensor and technical simplicity.

1 cl, 2 dwg