Efficiency of coherent state quantum cryptography in the presence of loss: Influence of realistic error correction

Abstract

We investigate the performance of continuous variable quantum key distribution scheme in a practical setting. More specifically, we take non-ideal error reconciliation procedure into account. The quantum channel connecting the two honest parties is assumed to be lossy but noiseless. Secret key rates are given for the case that the measurement outcomes are postselected or a reverse reconciliation scheme is applied. The reverse reconciliation scheme loses its initial advantage in the practical setting. If one combines postselection with reverse reconciliation however, much of this advantage can be recovered.

arXiv comment7 pages, 2 figures

References in corpus (18)

• Quantum Cryptography
• Continuous variable quantum cryptography using coherent states
• Quantum key distribution using gaussian-modulated coherent states
• Distillation of secret key and entanglement from quantum states
• Continuous variable quantum cryptography
• Quantum cryptography with squeezed states
• A photonic quantum information interface
• Continuous Variable Quantum Cryptography - beating the 3 dB loss limit
• Entanglement as precondition for secure quantum key distribution
• Virtual Entanglement and Reconciliation Protocols for Quantum Cryptography with Continuous Variables
• Collective attacks and unconditional security in continuous variable quantum key distribution
• Quantum key distribution with bright entangled beams
• Quantum cryptography using balanced homodyne detection
• Security bounds for continuous variables quantum key distribution
• A practical limitation for continuous-variable quantum cryptography using coherent states
• Detecting two-party quantum correlations in quantum key distribution protocols
• Performance of various quantum key distribution systems using 1.55 um up-conversion single-photon detectors
• Security of Continuous-variable quantum cryptography using coherent states: Decline of postselection advantage

Cited by in corpus (41)

• The Security of Practical Quantum Key Distribution
• Gaussian Quantum Information
• Distributing Secret Keys with Quantum Continuous Variables: Principle, Security and Implementations
• Continuous Variable Quantum Cryptography using Two-Way Quantum Communication
• Improving the maximum transmission distance of continuous-variable quantum key distribution using a noiseless amplifier
• Asymptotic security analysis of discrete-modulated continuous-variable quantum key distribution
• Virtual noiseless amplification and Gaussian post-selection in continuous-variable quantum key distribution
• Trusted Noise in Continuous-Variable Quantum Key Distribution: a Threat and a Defense
• Security of Binary Modulated Continuous Variable Quantum Key Distribution under Collective Attacks
• Feasibility of continuous-variable quantum key distribution with noisy coherent states
• Demonstration of Coherent State Discrimination Using a Displacement Controlled Photon Number Resolving Detector
• Feasibility of free space quantum key distribution with coherent polarization states
• Coherent State Quantum Key Distribution with Multi Letter Phase-Shift Keying
• Discrimination of binary coherent states using a homodyne detector and a photon number resolving detector
• A simple proof that Gaussian attacks are optimal among collective attacks against continuous-variable quantum key distribution with a Gaussian modulation
• Squeezed-state quantum key distribution upon imperfect reconciliation
• Security of coherent state quantum cryptography in the presence of Gaussian noise
• Finite-Size Security for Discrete-Modulated Continuous-Variable Quantum Key Distribution Protocols
• Dimension Reduction in Quantum Key Distribution for Continuous- and Discrete-Variable Protocols
• Witnessing effective entanglement in a continuous variable prepare&measure setup and application to a QKD scheme using postselection
• Trusted detector noise analysis for discrete modulation schemes of continuous-variable quantum key distribution
• Multi-state discrimination below the quantum noise limit at the single-photon level
• Continuous variable quantum key distribution based on optical entangled states without signal modulation
• Subcarrier wave continuous variable quantum key distribution with discrete modulation: mathematical model and finite-key analysis
• Optimizing Continuous-Variable Quantum Key Distribution with Phase-Shift Keying Modulation and Postselection
• Tight Secure Key Rates for CV-QKD with 8PSK Modulation
• One-way quantum key distribution: Simple upper bound on the secret key rate
• Finite-size effects in continuous-variable QKD with Gaussian post-selection
• Discrimination of Optical Coherent States using a Photon Number Resolving Detector
• Quantum Filtering of Optical Coherent States
• Continuous-variable quantum communication
• Coherent detection schemes for subcarrier wave continuous variable quantum key distribution
• Long-distance continuous-variable measurement-device-independent quantum key distribution with post-selection
• Experimental composable key distribution using discrete-modulated continuous variable quantum cryptography
• Computational Complexity of Continuous Variable Quantum Key Distribution
• Security proof of differential phase shift quantum key distribution in the noiseless case
• On single-photon quantum key distribution in the presence of loss
• Teleportation-Based Continuous Variable Quantum Cryptography
• Secret key rate of a continuous-variable quantum-key-distribution scheme when the detection process is inaccessible to eavesdroppers
• Finite-size analysis of prepare-and-measure and decoy-state QKD via entropy accumulation
• An introductory review of the theory of continuous-variable quantum key distribution: Fundamentals, protocols, and security