Nanjing University exhibited its superconducting single photon detector at the National "Eleventh Five-Year" Exhibition of Major Scientific and Technological Achievements.
Superconducting single photon detector
Nanjing University successfully developed a superconducting single-photon detector chip, established a single-photon signal detection system coupled with communication fiber, and mastered all the technologies from material growth to chip preparation to signal detection system. The detector has a system detection efficiency of 4.2% for the 1550nm wavelength signal and a system detection efficiency of up to 30% for the 660nm wavelength. The experimental results are in the forefront of the world, marking that China has become the fourth independently developed super Countries that conduct single photon detectors.
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