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arXiv · 0802.3177

General theory of decoy-state quantum cryptography with source errors

Xiang-Bin Wang·C. -Z. Peng·J. Zhang·L. Yang·Jian-Wei Pan
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Abstract

The existing theory of decoy-state quantum cryptography assumes the exact control of each states from Alice's source. Such exact control is impossible in practice. We develop the theory of decoy-state method so that it is unconditionally secure even there are state errors of sources, if the range of a few parameters in the states are known. This theory simplifies the practical implementation of the decoy-state quantum key distribution because the unconditional security can be achieved with a slightly shortened final key, even though the small errors of pulses are not corrected.

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Xiang-Bin Wang, C. -Z. Peng, J. Zhang, L. Yang, Jian-Wei Pan. 2008-04-30. General theory of decoy-state quantum cryptography with source errors. https://doi.org/10.1103/physreva.77.042311

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