Computational Complexity of Continuous Variable Quantum Key Distribution

Details Computational Complexity of Continuous Variable Quantum Key Distribution Computational Complexity of Continuous Variable Quantum Key Distribution

2006-02-01

arxiv.org/abs/quant-ph/0602019v5

IEEE Trans. Inform. Theory, vol. 54, no. 6, pp. 2803--2807, Jun. 2008

Physics

Quantum Physics

Scientific paper

10.1109/TIT.2008.921889

The continuous variable quantum key distribution has been considered to have the potential to provide high secret key rate. However, in present experimental demonstrations, the secret key can be distilled only under very small loss rates. Here, by calculating explicitly the computational complexity with the channel transmission, we show that under high loss rate it is hard to distill the secret key in present continuous variable scheme and one of its advantages, the potential of providing high secret key rate, may therefore be limited.

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