Physics – Quantum Physics
Scientific paper
2011-07-04
Physics
Quantum Physics
9 pages, 1 figure
Scientific paper
We present a tight security analysis of the Bennett-Brassard 1984 protocol taking into account the finite size effect of key distillation, and achieving unconditional security. We begin by presenting a simple argument utilizing the normal approximation of the hypergeometric function, and next show that a similarly tight bound can be obtained by a rigorous argument without relying on the normal approximation.
Hayashi Masahito
Tsurumaru Toyohiro
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