Unconditional security at a low cost

Details Unconditional security at a low cost Unconditional security at a low cost

2006-07-31

arxiv.org/abs/quant-ph/0608001v1

PHYSICAL REVIEW A 74, 052325 (2006)

Physics

Quantum Physics

Accepted by International Conference on Quantum Foundation and Technology: Frontier and Future 2006 (ICQFT'06)

Scientific paper

10.1103/PhysRevA.74.052325

By simulating four quantum key distribution (QKD) experiments and analyzing one decoy-state QKD experiment, we compare two data post-processing schemes based on security against individual attack by L\"{u}tkenhaus, and unconditional security analysis by Gottesman-Lo-L\"{u}tkenhaus-Preskill. Our results show that these two schemes yield close performances. Since the Holy Grail of QKD is its unconditional security, we conclude that one is better off considering unconditional security, rather than restricting to individual attacks.

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