▎ 摘　　要

NOVELTY - The system has a graphene Josephson junction detector (1) electrically connected with a microwave resonance readout circuit (2) for monitoring change of resonance frequency and quality factor of the microwave resonance circuit to realize detection of a detected signal. A low-temperature refrigerator (4) provides a low temperature working environment for the graphene and the microwave resonant circuit. The microwave network analyzer (3) is connected with the microwave circuit for monitoring the change of the resonance frequency. Grapheme Josephson junction detector is composed of a silicon lens. USE - Terahertz graphene Josephson junction detection system based on microwave resonant circuit readout used in astronomy, physics, material science, life science and information technology. ADVANTAGE - The system adopts microwave network analyzer to monitor microwave resonance circuit resonance frequency and quality factor change, so as to realize high sensitivity detection of terahertz signal. The microwave resonance readout circuit works in the microwave band, avoids the influence of low frequency noise, and can realize low noise readout. The structure is relatively simple, and the preparation technique has low requirement, since the microwave resonant circuit reads only the planar coplanar waveguide or microstrip line structure inductance and capacitance. The external magnetic field change or electromagnetic interference is not sensitive, expanding the application range of the system. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the terahertz graphene Josephson junction detection system based on the microwave resonant circuit readout. 1Graphene Josephson junction detector 2Microwave resonance readout circuit 3Microwave network analyzer 4Low-temperature refrigerator