Secure Reusable Base-String in Quantum Key Distribution

Details Secure Reusable Base-String in Quantum Key Distribution Secure Reusable Base-String in Quantum Key Distribution

2007-06-26

arxiv.org/abs/0706.3791v1

Physics

Quantum Physics

4 pages and 3 figures

Scientific paper

Protecting secure random key from eavesdropping in quantum key distribution protocols has been well developed. In this letter, we further study how to detect and eliminate eavesdropping on the random base string in such protocols. The correlation between the base string and the key enables Alice and Bob to use specific privacy amplification to distill and reuse the previously shared base string with unconditional security and high efficiency. The analysis of the unconditional secure reusable base string brings about new concept and protocol design technique.

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