Secure and efficient decoy-state quantum key distribution with inexact pulse intensities

Abstract

We present a general theorem for the efficient verification of the lower bound of single-photon transmittance. We show how to do decoy-state quantum key distribution efficiently with large random errors in the intensity control. In our protocol, the linear terms of fluctuation disappear and only the quadratic terms take effect. We then show the unconditional security of decoy-state method with whatever error pattern in intensities of decoy pulses and signal pulses provided that the intensity of each decoy pulse is less than $\mu$ and the intensity of each signal pulse is larger than ${\mu }^{\prime }$.

References in corpus (23)

• Quantum Cryptography
• Decoy State Quantum Key Distribution
• Quantum Key Distribution with High Loss: Toward Global Secure Communication
• Beating the PNS attack in practical quantum cryptography
• Security Aspects of Practical Quantum Cryptography
• Practical Decoy State for Quantum Key Distribution
• Quantum cryptography protocols robust against photon number splitting attacks for weak laser pulses implementations
• Security against individual attacks for realistic quantum key distribution
• Quantum Cryptography with Coherent States
• Quantum key distribution over 122 km of standard telecom fiber
• Quantum Key Distribution over 67 km with a plug & play system
• Experimental Long-Distance Decoy-State Quantum Key Distribution Based On Polarization Encoding
• Experimental Quantum Key Distribution with Decoy States
• High-speed linear optics quantum computing using active feed-forward
• Long distance decoy state quantum key distribution in optical fiber
• Quantum key distribution with realistic states: photon-number statistics in the photon-number splitting attack
• A decoy-state protocol for quantum cryptography with 4 intensities of coherent states
• Long-distance quantum key distribution in optical fiber
• Intrinsic-Stabilization Uni-Directional Quantum Key Distribution Between Beijing and Tianjin
• Security of two quantum cryptography protocols using the same four qubit states
• Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse
• Simple protocol for secure decoy-state quantum key distribution with a loosely controlled source
• Prevent eavesdropping with bright reference pulses for practical quantum key distribution

Cited by in corpus (18)

• Integrating quantum key distribution with classical communications in backbone fiber network
• Feasibility of satellite quantum key distribution
• 200km Decoy-state quantum key distribution with photon polarization
• Decoy State Quantum Key Distribution With Modified Coherent State
• Hacking the quantum key distribution system by exploiting the avalanche transition region of single photon detectors
• Asymmetric twin-field quantum key distribution
• Exact minimum and maximum of yield with a finite number of decoy light intensities
• Finite key performance of satellite quantum key distribution under practical constraints
• Experimental Two Way Quantum Key Distribution with Decoy State
• Effect of detector dead-times on the security evaluation of differential-phase-shift quantum key distribution against sequential attacks
• Passive scheme with a photon-number-resolving detector for monitoring the untrusted source in a plug-and-play quantum-key-distribution system
• Decoy states for quantum key distribution based on decoherence-free subspaces
• Passive-scheme analysis for solving untrusted source problem in quantum key distribution
• Multi-user quantum key distribution with collective eavesdropping detection over collective-noise channels
• Weak+Vacuum and One Decoy State with Two Way Quantum Key Distribution Protocol
• Experimental Measurement-Device-Independent Quantum Key distribution with Flawed State-Preparation over 300 km
• Quantum key distribution overcoming practical correlated intensity fluctuations
• Finite-key analysis for a practical decoy-state twin-field quantum key distribution