Thursday, February 16, 2012

1202.3232 (Yong-gang Tan)

Symmetric Device-Independent Quantum Key Distribution Against General
Attack
   [PDF]

Yong-gang Tan
A symmetric device-independent quantum key distribution (DIQKD) protocol is
proposed in this paper, with the Holevo limit and subadditivity of von Neumann
entropy, one can bound the Eve's ability with collective attack. Together with
symmetry of this protocol, the state Eve prepared for Alice and Bob, and at the
same time, her eavesdropping on Alice's and Bob's measurements can be
definitely inferred at the assumption that Eve is aim at maximizing her
information gain. Relation between the quantity of Clauser-Horne-Shimony-Holt
(CHSH) polynomial $S$ and the quantum bit error rate (QBER) $Q$ is set up, with
which one can bound Eve's eavesdropping similarly as that of Ekert91 protocol.
View original: http://arxiv.org/abs/1202.3232

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