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Performance of superconducting nanowire single-photon detector with the fan coupling antenna array |
Wang Yu-Jue (王玉珏), Ding Tian (丁天), Ma Hai-Qiang (马海强), Jiao Rong-Zhen (焦荣珍) |
School of Science, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract The performance of superconducting nanowire single-photon detector (SNSPD) involving niobium nitride with the fan coupling antenna array is analyzed. The SNSPD has a high detection efficiency and counting rate. Hydrogen silsesquioxane and niobium nitride are filled in the gold grating deposited on the substrate in which the fan coupling antenna arrays are embedded. By changing the position of the fan coupling antenna array, the maximum area of optical intensity is obtained and the photon collection efficiency is increased by 26.5 times. The detection efficiency of SNSPD is improved without changing the detection speed. These parameters are important for designing a practical single-photon detector.
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Received: 09 September 2013
Revised: 02 December 2013
Accepted manuscript online:
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PACS:
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03.67.Dd
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(Quantum cryptography and communication security)
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Fund: Project supported by the National Basic Research Program of China (Grant No. 2010CB923202). |
Corresponding Authors:
Jiao Rong-Zhen
E-mail: rzjiao@bupt.edu.cn
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Cite this article:
Wang Yu-Jue (王玉珏), Ding Tian (丁天), Ma Hai-Qiang (马海强), Jiao Rong-Zhen (焦荣珍) Performance of superconducting nanowire single-photon detector with the fan coupling antenna array 2014 Chin. Phys. B 23 060308
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