Urban QKD test for phase and polarization encoding devices
Autor: | Yury Kurochkin, A. V. Miller, A. A. Kanapin, S. S. Vorobey, A. S. Sokolov, Alexander Duplinskiy, V. L. Kurochkin |
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Rok vydání: | 2017 |
Předmět: |
Physics
Key generation Physics and Astronomy (miscellaneous) business.industry Key distribution Quantum channel Quantum key distribution Polarization (waves) Encryption 01 natural sciences 010309 optics Quantum cryptography 0103 physical sciences Electronic engineering Quantum bit error rate 010306 general physics business |
Zdroj: | International Journal of Quantum Information. 15:1740018 |
ISSN: | 1793-6918 0219-7499 |
Popis: | In this work, the results of quantum key distribution through an urban fiber communication line with a length of 30.6[Formula: see text]km and losses of 11.7[Formula: see text]dB, obtained by both phase and polarization encoding-based devices, are presented. For phase encoding, a two-pass auto-compensating optical scheme, commonly called “plug&play”, was used. For polarization encoding, a self-developed unconventional optical scheme was made. A continuous key distribution with a sifted key generation rate of 1.0[Formula: see text]kbit/s and a quantum bit error rate of 5.7% was implemented when using “plug&play” device, whereas 0.1[Formula: see text]kbit/s and 5.5% was observed when using one with polarization encoding. The features and conveniences of both implementations are discussed. |
Databáze: | OpenAIRE |
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