Photonic Integrated Phase Decoder Scheme for High-Speed, Efficient and Stable Quantum Key Distribution System

Abstract

Quantum key distribution (QKD) is gradually moving towards network applications. It is important to improve the performance of QKD systems such as photonic integration for compact systems, the stability resistant to environmental disturbances, high key rate, and high efficiency in QKD applications. In the letter, we propose a general quantum decoding model, namely orthogonal-polarizations-exchange reflector Michelson interferometer model, to solve quantum channel disturbance caused by environment. Based on the model, we give a quantum phase decoder scheme, i.e. a Sagnac configuration based orthogonal-polarizations-exchange reflector Michelson interferometer (SRMI). Besides the stability immune to quantum channel disturbance, the SRMI decoder can be fabricated with photonic integrated circuits, and suitable to gigahertz phase encoding QKD systems, and can increase the system efficiency because of the low insertion loss of the decoder.

arXiv comment8 pages, 7 figures

References in corpus (12)

• Quantum Cryptography
• Simple Proof of Security of the BB84 Quantum Key Distribution Protocol
• Decoy State Quantum Key Distribution
• Measurement-device-independent quantum key distribution
• Quantum Key Distribution with High Loss: Toward Global Secure Communication
• Beating the PNS attack in practical quantum cryptography
• Optimal eavesdropping in quantum cryptography with six states
• Quantum cryptography protocols robust against photon number splitting attacks for weak laser pulses implementations
• Trojan Horse attacks on Quantum Key Distribution systems
• Practical gigahertz quantum key distribution robust against channel disturbance
• Stability of Phase-modulated Quantum Key Distribution System
• Alternative Anti-Quantum-Channel Disturbance Decoder for Quantum Key Distribution