Robust Unconditionally Secure Quantum Key Distribution with Two Nonorthogonal and Uninformative States

Details Robust Unconditionally Secure Quantum Key Distribution with Two Nonorthogonal and Uninformative States Robust Unconditionally Secure Quantum Key Distribution with Two Nonorthogonal and Uninformative States

2009-07-02

arxiv.org/abs/0907.0493v1

Phys. Rev. A 80, 032327 (2009)

Physics

Quantum Physics

7 pages, 2 figures

Scientific paper

10.1103/PhysRevA.80.032327

We introduce a novel form of decoy-state technique to make the single-photon Bennett 1992 protocol robust against losses and noise of a communication channel. Two uninformative states are prepared by the transmitter in order to prevent the unambiguous state discrimination attack and improve the phase-error rate estimation. The presented method does not require strong reference pulses, additional electronics or extra detectors for its implementation.

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