Physics – Quantum Physics
Scientific paper
2001-06-15
Physics
Quantum Physics
4pages, 2figures, LaTeX
Scientific paper
10.1109/68.992616
`Circular type' interferometric system for quantum key distribution is
proposed. The system has naturally self-alignment and compensation of
birefringence and also has enough efficiency against polarisation dependence.
Moreover it is easily applicable to multi-party. Key creation with 0.1 photon
per pulse at a rate of 1.2KHz with a 5.4% QBER over a 200m fiber was realized.
Hasegawa Toshio
Ishizuka Hirokazu
Nishioka Tsuyoshi
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