Single-photon detection and its applications |
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| Authors: | Yan Liang HePing Zeng |
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| Institution: | 1. Shanghai Key Laboratory of Modern Optical System, Engineering Research Center of Optical Instrument and System, Ministry of Education, School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, China
2. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai, 200062, China
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| Abstract: | A single-photon detector is an extremely sensitive device capable of registering photons, offering essential technical support for optics quantum information applications. We review herein our recent experimental progress in the development and application of single-photon detection techniques. Techniques based on advanced self-differencing, low-pass filtering, frequency up-conversion and photon-number-resolving are introduced for attaining high-speed, high-efficiency, low-noise single-photon detection at infrared wavelengths. The advantages of high-speed single-photon detection are discussed in some applications, such as the laser ranging and quantum key distribution. The photon-number-resolving detection is shown to support efficient quantum random number generation. |
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| Keywords: | quantum optics photodetection avalanche photodiode frequency up-conversion |
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