Sub-Mbps key-rate continuous-variable quantum key distribution with local-local-oscillator over 100 km fiber
arXiv:2212.11534 · doi:10.1364/OL.485913
Abstract
We experimentally demonstrated a sub-Mbps key rate Gaussian-modulated coherent-state continuous-variable quantum key distribution (CV-QKD) over 100 km transmission distance. To efficiently control the excess noise, the quantum signal and the pilot tone are co-transmitted in fiber channel based on wide-band frequency and polarization multiplexing methods. Furthermore, a high-accuracy data-assisted time domain equalization algorithm is carefully designed to compensate the phase noise and polarization variation in low signal-to-noise ratio. The asymptotic secure key rate (SKR) of the demonstrated CV-QKD is experimentally evaluated to be 10.36 Mbps, 2.59 Mbps, and 0.69 Mbps over transmission distance of 50 km, 75 km, and 100 km, respectively. The experimental demonstrated CV-QKD system significantly improves transmission distance and SKR compared to the state-of-art GMCS CV-QKD experimental results, and shows the potential for long-distance and high-speed secure quantum key distribution.
arXiv comment4 pages, 7 figures
References in corpus (23)
- Gaussian Quantum Information
- Advances in Quantum Cryptography
- Secure quantum key distribution with realistic devices
- Continuous variable quantum cryptography using coherent states
- Experimental demonstration of long-distance continuous-variable quantum key distribution
- Quantum Cryptography without Switching
- High-rate quantum cryptography in untrusted networks
- Long-Distance Continuous-Variable Quantum Key Distribution over 202.81 km of Fiber
- Composable security proof for continuous-variable quantum key distribution with coherent states
- Continuous-Variable Quantum Key Distribution with Gaussian Modulation -- The Theory of Practical Implementations
- Preventing Calibration Attacks on the Local Oscillator in Continuous-Variable Quantum Key Distribution
- Continuous-Variable Measurement-Device-Independent Quantum Key Distribution
- Local oscillator fluctuation opens a loophole for Eve in practical continuous-variable quantum-key-distribution systems
- Quantum Hacking on Continuous-Variable Quantum Key Distribution System using a Wavelength Attack
- Continuous-variable QKD over 50km commercial fiber
- Limits and Security of Free-Space Quantum Communications
- Practical continuous-variable quantum key distribution with composable security
- High-speed Gaussian modulated continuous-variable quantum key distribution with a local local oscillator based on pilot-tone-assisted phase compensation
- Long-distance continuous-variable quantum key distribution with efficient channel estimation
- Experimental Demonstration of High-Rate Discrete-Modulated Continuous-Variable Quantum Key Distribution System
- Finite-size security of continuous-variable quantum key distribution with digital signal processing
- High-throughput decoder of quasi-cyclic LDPC codes with limited precision for continuous-variable quantum key distribution systems
- Continuous-Variable Quantum Key Distribution Over 60 km Optical Fiber With Real Local Oscillator
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- Advances in Continuous Variable Measurement-Device-Independent Quantum Key Distribution
- QOSST: A Highly-Modular Open Source Platform for Experimental Continuous-Variable Quantum Key Distribution
- Quantum communications in continuous variable systems