One-Way Quantum Key Distribution System Based on Planar Lightwave Circuits
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概要
- 論文の詳細を見る
We developed a one-way quantum key distribution (QKD) system based upon a planar lightwave circuit (PLC) interferometer. This interferometer is expected to be free from the backscattering inherent in commercially available two-way QKD systems and phase drift without active compensation. A key distribution experiment with spools of standard telecom fiber showed that the bit error rate was as low as 6% for a 100-km key distribution using an attenuated laser pulse with a mean photon number of 0.1 and was determined solely by the detector noise. This clearly demonstrates the advantages of our PLC-based one-way QKD system over two-way QKD systems for long distance key distribution.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2006-06-15
著者
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Nambu Yoshihiro
Fundamental And Environmental Research Laboratories Nec
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TOMITA Akihisa
ERATO-SORST Quantum Computation and Information Project, JST
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Yoshino Ken'ichiro
Fundamental and Environmental Research Laboratories, NEC Corp., 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan
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Tomita Akihisa
ERATO—Imai Quantum Computation and Information Project, Tokyo 113-0033, Japan
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Nambu Yoshihiro
Fundamental and Environmental Research Laboratories, NEC Corp., 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501, Japan
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