financially supported by theNational Basic Research Program of China(2011CBA00107,2011CBA00202);the National Natural Science Foundation of China(11227904 and 61101012)
Performances of superconducting nanowire single-photon detectors(SNSPDs) based on low TCmaterials strongly depend on the operating temperatures. We have fabricated infrared-sensitive niobium SNSPDs based on doped niob...