| 摘要 |
PROBLEM TO BE SOLVED: To provide a superconducting single photon detector having a high time resolution. SOLUTION: The superconducting single photon detector comprises a superconductor strip biased up to a level near its critical current value. This strip generates a recognizable output signal upon absorption of an incident single photon. In an embodiment, this strip is made of NbN. In another embodiment, the superconductor strip is formed in a twisted shape to raise the probability of catching photons from a light source. The single photon detector is suited to various application such as space communications, satellite communications, quantum communications, quantum cryptography, micro-emission, semiconductor device tests, etc.
|
