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arXiv · 0907.0493

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

Marco Lucamarini·Giovanni Di Giuseppe·Kiyoshi Tamaki
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Abstract

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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Marco Lucamarini, Giovanni Di Giuseppe, Kiyoshi Tamaki. 2009-07-02. Robust Unconditionally Secure Quantum Key Distribution with Two Nonorthogonal and Uninformative States. https://doi.org/10.1103/physreva.80.032327

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