Long-distance continuous-variable measurement-device-independent quantum key distribution with discrete modulation
arXiv:1812.05254 · doi:10.1103/PhysRevA.99.022322
Abstract
We propose a long-distance continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) protocol with discrete modulation. This kind of discrete-modulated schemes have good compatibility with efficient error correction code, which lead to higher reconciliation efficiency even at low signal-to-noise ratio (SNR). Security analysis shows that the proposed protocol is secure against arbitrary collective attacks in the asymptotic limit with proper use of decoy states. And with the using of discrete modulation, the proposed CV-MDI-QKD protocol has simpler implementation and outperform previous protocols in terms of achievable maximal transmission distance, which precisely solve the bottleneck of the original Gaussian-modulated CV-MDI-QKD protocol.
8 pages, 5 figures
References in corpus (13)
- Unconditional optimality of Gaussian attacks against continuous-variable QKD
- Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography
- Composable security proof for continuous-variable quantum key distribution with coherent states
- A de Finetti representation theorem for infinite dimensional quantum systems and applications to quantum cryptography
- Security of continuous-variable quantum key distribution against general attacks
- Multidimensional reconciliation for continuous-variable quantum key distribution
- Avoiding the Detector Blinding Attack on Quantum Cryptography
- Continuous-variable measurement-device-independent quantum key distribution using squeezed states
- Security of Binary Modulated Continuous Variable Quantum Key Distribution under Collective Attacks
- Finite size analysis of measurement device independent quantum cryptography with continuous variables
- Continuous-variable quantum cryptography with an untrusted relay: Detailed security analysis of the symmetric configuration
- Finite-size analysis of continuous-variable measurement-device-independent quantum key distribution
- Continuous-variable quantum key distribution with a leakage from state preparation