Decoy State Quantum Key Distribution Using Homodyne Detection
S. Hamed Shams Mousavi, and Philippe Gallion
TL;DR
This paper introduces a decoy-state method for homodyne detection-based quantum key distribution, enhancing security against photon number splitting attacks and extending secure transmission distances.
Contribution
It adapts the decoy-state technique to homodyne detection QKD systems, quantifying their improved security and transmission range.
Findings
Enhanced security against PNS attack
Extended secure transmission range
Quantitative performance analysis
Abstract
In this paper, we propose to use the decoy-state technique to improve the security of the quantum key distribution (QKD) systems based on homodyne detection against the photon number splitting (PNS) attack. The decoy-state technique is a powerful tool that can significantly boost the secure transmission range of the QKD systems. However it has not yet been applied to the systems that use coherent detection. After adapting this theory to the systems based on homodyne detection, we quantify the secure performance and transmission range of the resulting system.
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