Field test of a continuous-variable quantum key distribution prototype
arXiv:0812.3292 · doi:10.1088/1367-2630/11/4/045023
Abstract
We have designed and realized a prototype that implements a continuous-variable quantum key distribution protocol based on coherent states and reverse reconciliation. The system uses time and polarization multiplexing for optimal transmission and detection of the signal and phase reference, and employs sophisticated error-correction codes for reconciliation. The security of the system is guaranteed against general coherent eavesdropping attacks. The performance of the prototype was tested over preinstalled optical fibres as part of a quantum cryptography network combining different quantum key distribution technologies. The stable and automatic operation of the prototype over 57 hours yielded an average secret key distribution rate of 8 kbit/s over a 3 dB loss optical fibre, including the key extraction process and all quantum and classical communication. This system is therefore ideal for securing communications in metropolitan size networks with high speed requirements.
15 pages, 6 figures, submitted to New Journal of Physics (Special issue on Quantum Cryptography)
References in corpus (19)
- Continuous variable quantum cryptography using coherent states
- Quantum key distribution using gaussian-modulated coherent states
- Continuous variable quantum cryptography
- Unconditional optimality of Gaussian attacks against continuous-variable QKD
- Quantum key distribution over 25 km with an all-fiber continuous-variable system
- Quantum Cryptography without Switching
- Quantum cryptography with squeezed states
- Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography
- Quantum Distribution of Gaussian Keys with Squeezed States
- Continuous Variable Quantum Cryptography - beating the 3 dB loss limit
- A de Finetti representation theorem for infinite dimensional quantum systems and applications to quantum cryptography
- Fast and simple one-way Quantum Key Distribution
- Multidimensional reconciliation for continuous-variable quantum key distribution
- Practical Quantum Key Distribution with Polarization-Entangled Photons
- Experimental study on Gaussian-modulated coherent states quantum key distribution over standard telecom fiber
- Continuous-variable quantum cryptography is secure against non-gaussian attacks
- Controlling excess noise in fiber optics continuous variables quantum key distribution
- Gigahertz quantum key distribution with InGaAs avalanche photodiodes
- Security of coherent state quantum cryptography in the presence of Gaussian noise
Cited by in corpus (57)
- Gaussian Quantum Information
- Advances in Quantum Cryptography
- Secure quantum key distribution with realistic devices
- Experimental demonstration of long-distance continuous-variable quantum key distribution
- Finite-size analysis of continuous-variable quantum key distribution
- Continuous-Variable Quantum Key Distribution with Gaussian Modulation -- The Theory of Practical Implementations
- Distributing Secret Keys with Quantum Continuous Variables: Principle, Security and Implementations
- Long Distance Continuous-Variable Quantum Key Distribution with a Gaussian Modulation
- Analysis of Imperfections in Practical Continuous-Variable Quantum Key Distribution
- Local oscillator fluctuation opens a loophole for Eve in practical continuous-variable quantum-key-distribution systems
- Continuous-variable QKD over 50km commercial fiber
- Feasibility of quantum key distribution through dense wavelength division multiplexing network
- Continuous-variable quantum key distribution protocols with a non-Gaussian modulation
- Continuous-variable quantum key distribution system: past, present, and future
- Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook
- Improving the maximum transmission distance of continuous-variable quantum key distribution using a noiseless amplifier
- A balanced homodyne detector for high-rate Gaussian-modulated coherent-state quantum key distribution
- Virtual noiseless amplification and Gaussian post-selection in continuous-variable quantum key distribution
- Metropolitan quantum key distribution with silicon photonics
- Trusted Noise in Continuous-Variable Quantum Key Distribution: a Threat and a Defense
- Field Test of Classical Symmetric Encryption with Continuous Variable Quantum Key Distribution
- Homodyne-detector-blinding attack in continuous-variable quantum key distribution
- High-speed Gaussian modulated continuous-variable quantum key distribution with a local local oscillator based on pilot-tone-assisted phase compensation
- Non-Gaussian postselection and virtual photon subtraction in continuous-variable quantum key distribution
- 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
- Continuous-Variable Quantum Key Distribution with Rateless Reconciliation Protocol
- Pilot-assisted intradyne reception for high-speed continuous-variable quantum key distribution with true local oscillator
- Witnessing trustworthy single-photon entanglement with local homodyne measurements
- Controlling an actively-quenched single photon detector with bright light
- Continuous-variable measurement-device-independent quantum key distribution with virtual photon subtraction
- Squeezing-enhanced quantum key distribution over atmospheric channels
- Multi-channel parallel continuous variable quantum key distribution with Gaussian modulation
- Polarization attack on continuous-variable quantum key distribution
- Practical security of continuous-variable quantum key distribution with reduced optical attenuation
- Gaussian entanglement in the turbulent atmosphere
- Enhancement of the security of a practical continuous-variable quantum-key-distribution system by manipulating the intensity of the local oscillator
- Improve the Maximum Transmission Distance of Four-State Continuous Variable Quantum Key Distribution by using a Noiseless Linear Amplifier
- Automated machine learning for secure key rate in discrete-modulated continuous-variable quantum key distribution
- Gaussian Entanglement for Quantum Key Distribution from a Single-Mode Squeezing Source
- Security analysis of practical continuous-variable quantum key distribution systems under laser seeding attack
- Finding and breaking the realistic rate-distance limit of continuous variable quantum key distribution
- Unidimensional continuous-variable measurement-device-independent quantum key distribution
- Continuous variable controlled quantum dialogue and secure multiparty quantum computation
- Continuous-variable quantum communication
- Probabilistic amplitude shaping for continuous-variable quantum key distribution with discrete modulation over a wiretap channel
- Quantum-Classical Access Networks with Embedded Optical Wireless Links
- Practical quantum secure direct communication with squeezed states
- On the problem of non-zero word error rates for fixed-rate error correction codes in continuous variable quantum key distribution
- Advances in Continuous Variable Measurement-Device-Independent Quantum Key Distribution
- Homodyne Detection Quadrature Phase Shift Keying Continuous-Variable Quantum Key Distribution with High Excess Noise Tolerance
- Discrete-Modulated Continuous-Variable Quantum Key Distribution in Satellite-to-Ground Communication
- Using a Heterodyne Detection Scheme in a Subcarrier Wave Quantum Communication System
- Secret key rate of a continuous-variable quantum-key-distribution scheme when the detection process is inaccessible to eavesdroppers
- Single-photon-detection attack on the phase-coding continuous-variable quantum cryptography
- Quantum communications in continuous variable systems
- Security against collective attacks for a continuous-variable quantum key distribution protocol using homodyne detection and postselection