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`Circular type' quantum key distribution

Tsuyoshi Nishioka·Hirokazu Ishizuka·Toshio Hasegawa
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Abstract

`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.

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Tsuyoshi Nishioka, Hirokazu Ishizuka, Toshio Hasegawa. 2001-06-15. `Circular type' quantum key distribution. https://doi.org/10.1109/68.992616

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