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Unconditional Security Of Quantum Key Distribution Over Arbitrarily Long Distances | | Hoi-Kwong Lo
; H. F. Chau
; | | Date: |
3 Mar 1998 | | Journal: | Science 283 (1999) 2050-2056 | | Subject: | quant-ph | | Abstract: | Quantum key distribution is widely thought to offer unconditional security in communication between two users. Unfortunately, a widely accepted proof of its security in the presence of source, device and channel noises has been missing. This long-standing problem is solved here by showing that, given fault-tolerant quantum computers, quantum key distribution over an arbitrarily long distance of a realistic noisy channel can be made unconditionally secure. The proof is reduced from a noisy quantum scheme to a noiseless quantum scheme and then from a noiseless quantum scheme to a noiseless classical scheme, which can then be tackled by classical probability theory. | | Source: | arXiv, quant-ph/9803006 | | Other source: | [GID 495679] pmid10092221 | | Services: | Forum | Review | PDF | Favorites | |
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