Invention Grant
- Patent Title: Superconducting single photon detector
- Patent Title (中): 超导单光子检测器
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Application No.: US10969315Application Date: 2004-10-19
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Publication No.: US07049593B2Publication Date: 2006-05-23
- Inventor: Roman Sobolewski , Grigory N. Gol'tsman , Alexey D. Semenov , Oleg V. Okunev , Kenneth R. Wilsher , Steven A. Kasapi
- Applicant: Roman Sobolewski , Grigory N. Gol'tsman , Alexey D. Semenov , Oleg V. Okunev , Kenneth R. Wilsher , Steven A. Kasapi
- Applicant Address: US CA Milpitas US NY Rochester
- Assignee: Credence Systems Corporation,University of Rochester
- Current Assignee: Credence Systems Corporation,University of Rochester
- Current Assignee Address: US CA Milpitas US NY Rochester
- Agency: Dorsey & Whitney LLP
- Main IPC: H01L39/00
- IPC: H01L39/00

Abstract:
A single-photon detector includes a superconductor strip biased near its critical current. The superconductor strip provides a discernible output signal upon absorption of a single incident photon. In one example, the superconductor is a strip of NbN (niobium nitride). In another example, the superconductor strip meanders to increase its probability of receiving a photon from a light source. The single-photon detector is suitable for a variety of applications including free-space and satellite communications, quantum communications, quantum cryptography, weak luminescence, and semiconductor device testing.
Public/Granted literature
- US20050051726A1 Superconducting single photon detector Public/Granted day:2005-03-10
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