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Performance of Differential-Phase-Shift Keying Protocol Applying 1310nm Up-Conversion Single-Photon Detector |
| FENG Chen-Xu, JIAO Rong-Zhen, ZHANG Wen-Han |
| Laboratory for Quantum Information, Beijing University of Posts and Telecommunication, Beijing 100876 |
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| Cite this article: |
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FENG Chen-Xu, JIAO Rong-Zhen, ZHANG Wen-Han 2008 Chin. Phys. Lett. 25 3135-3137 |
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Abstract The performance of the differential-phase-shift keying (DPSK) protocol applying a 1310 nm up-conversion single-photon detector is analysed. The error rate and the communication rate as a function of distance for three quantum key distribution protocols, the Bennett--Brassard 1984, the Bennett--Brassard--Mermin 1992, and the DPSK, are presented. Then we compare the performance of these three protocols using the 1310nm up-conversion detector. We draw the conclusion that the DPSK protocol applying the detector has significant advantage over the other two protocols. Longer transmission distance and lower error rate can be achieved.
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| Keywords:
03.67.Dd
03.67.Hk
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Received: 03 January 2008
Published: 29 August 2008
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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