Precise evaluation of leaked information with universal2 privacy amplification in the presence of quantum attacker

Details Precise evaluation of leaked information with universal2 privacy amplification in the presence of quantum attacker Precise evaluation of leaked information with universal2 privacy amplification in the presence of quantum attacker

2012-02-03

arxiv.org/abs/1202.0601v1

Physics

Quantum Physics

Scientific paper

We treat secret key extraction when the eavesdropper has correlated quantum
states. We propose quantum privacy amplification theorems different from
Renner's, which are based on quantum conditional Renyi entropy of order 1+s.
Using those theorems, we derive an exponential decreasing rate for leaked
information and the asymptotic equivocation rate.

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