Simple security proof of quantum key distribution via uncertainty principle

Details Simple security proof of quantum key distribution via uncertainty principle Simple security proof of quantum key distribution via uncertainty principle

2005-05-14

arxiv.org/abs/quant-ph/0505108v1

Physics

Quantum Physics

4 pages, no figure

Scientific paper

We present an approach to the unconditional security of quantum key distribution protocols based on the uncertainty principle. The approach applies to every case that has been treated via the argument by Shor and Preskill, and relieve them from the constraints of finding quantum error correcting codes. It can also treat the cases with uncharacterized apparatuses. We derive a secure key rate for the Bennett-Brassard-1984 protocol with an arbitrary source characterized only by a single parameter representing the basis dependence.

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