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Efficient and low-noise single-photon avalanche photodiode for 1.244-GHz clocked quantum key distribution

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/47433

Title: Efficient and low-noise single-photon avalanche photodiode for 1.244-GHz clocked quantum key distribution
Authors: Nambu, Y. Browse this author
Takahashi, S. Browse this author
Yoshino, K. Browse this author
Tanaka, A. Browse this author
Fujiwara, M. Browse this author
Sasaki, M. Browse this author
Tajima, A. Browse this author
Yorozu, S. Browse this author
Tomita, A. Browse this author →KAKEN DB
Issue Date: 10-Oct-2011
Publisher: Optical Society of America
Journal Title: Optics Express
Volume: 19
Issue: 21
Start Page: 20531
End Page: 20541
Publisher DOI: 10.1364/OE.19.020531
Abstract: An efficient and low-noise 1.244-GHz gating InGaAs single-photon avalanche photodiode (SAPD) was developed for a high-speed quantum key distribution (QKD) system. An afterpulsing probability of 0.61% and a dark count probability per gate of 0.71 x 10^[-6] were obtained at a detection efficiency of 10.9% for 1.55-μm photons. Furthermore, our SAPD successfully coped with high detection efficiency (≤ 25%) and quite low afterpulsing noise (≤ 3% for ≤ 25% efficiency) at the same time. Its potential was verified using the actual QKD setups installed over a metropolitan area network.
Rights: ©2011 Optical Society of America
Type: article
URI: http://hdl.handle.net/2115/47433
Appears in Collections:情報科学院・情報科学研究院 (Graduate School of Information Science and Technology / Faculty of Information Science and Technology) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 富田 章久

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