Decoy-state theory for the heralded single-photon source with intensity fluctuations

Shuang Wang; Sheng Li Zhang; Hong Wei Li; Zhen Qiang Yin; Yi Bo Zhao; Wei Chen; Zheng Fu Han; Guang Can Guo

doi:10.1103/PhysRevA.79.062309

Decoy-state theory for the heralded single-photon source with intensity fluctuations

Shuang Wang, Sheng Li Zhang, Hong Wei Li, Zhen Qiang Yin, Yi Bo Zhao, Wei Chen, Zheng Fu Han^*, Guang Can Guo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

The secure key rates of decoy-state quantum key distribution (QKD) using the heralded single-photon source (HSPS) are recalculated in the case of intensity fluctuations. By numerical simulations, we show that the HSPS is a good source for decoy-state QKD experiments not only because it has larger upper bound of transmission distance than the usual weak-coherent source (WCS) but also because it is more robust against intensity fluctuations than the WCS.

Original language	English
Article number	062309
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	79
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.79.062309
Publication status	Published - 10 Jun 2009
Externally published	Yes

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10.1103/PhysRevA.79.062309

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AU - Li, Hong Wei

AU - Yin, Zhen Qiang

AU - Zhao, Yi Bo

AU - Chen, Wei

AU - Han, Zheng Fu

AU - Guo, Guang Can

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AB - The secure key rates of decoy-state quantum key distribution (QKD) using the heralded single-photon source (HSPS) are recalculated in the case of intensity fluctuations. By numerical simulations, we show that the HSPS is a good source for decoy-state QKD experiments not only because it has larger upper bound of transmission distance than the usual weak-coherent source (WCS) but also because it is more robust against intensity fluctuations than the WCS.

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Decoy-state theory for the heralded single-photon source with intensity fluctuations

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