QAM Quantum Noise Stream Cipher Transmission Over 100 km With Continuous Variable Quantum Key Distribution
| Autor: | Keisuke Kasai, Masato Yoshida, Takuya Hirano, Ryo Namiki, Toshihiko Hirooka, Tsubasa Ichikawa, Masataka Nakazawa |
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| Rok vydání: | 2017 |
| Předmět: |
business.industry
Computer science Quantum noise 02 engineering and technology Quantum key distribution Condensed Matter Physics Atomic and Molecular Physics and Optics QAM 020210 optoelectronics & photonics Quantum cryptography 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering Photonics business Stream cipher Quadrature amplitude modulation Computer Science::Cryptography and Security Phase-shift keying |
| Zdroj: | IEEE Journal of Quantum Electronics. 53:1-16 |
| ISSN: | 1558-1713 0018-9197 |
| DOI: | 10.1109/jqe.2017.2708523 |
| Popis: | We report the first on-line high-speed and large-capacity secure optical communication system. This was realized by combining a quadrature amplitude modulation/quantum noise stream cipher technology where a coherent multi-level optical signal is hidden in quantum noise and a quantum key distribution technology where secure key delivery is realized with an extremely weak laser light comparable to a single photon. In our security analysis, we adopt a realistic assumption, namely, that an adversary does not have a lossless fiber. To show the advantage of this scheme, we performed a 128 QAM, 70-Gbit/s single-channel transmission over 100 km with a spectral efficiency of as high as 10.3 bits/s/Hz. This is the fastest data rate and highest spectral efficiency yet achieved in quantum cryptography with a realistic assumption. |
| Databáze: | OpenAIRE |
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