Multi-channel parallel continuous variable quantum key distribution with Gaussian modulation
arXiv:1310.2405 · doi:10.1103/PhysRevA.89.022315
Abstract
We propose a novel scheme for continuous variable quantum key distribution(CV-QKD) using the subcarrier multiplexing technique which was employed in microwave photonics. This scheme allows to distribute N channels independent Gaussian modulated CV-QKD in parallel with one laser source and several phase modulators. We analyze the influence of nonlinear signal mixing and the security in the asymptotic limit. Results indicate that by using this multiplexing technique, each channel will be introduced a non-Gaussian extra source noise, resulting slightly short of the maximum transmission distance, while the total secret key rate can be considerably increased. This scheme could also be used for key distribution for multi-users and combined with the WDM devices it has the potential to construct a CV-QKD network.
9 pages, 7 figures
References in corpus (12)
- Gaussian Quantum Information
- Experimental demonstration of long-distance continuous-variable quantum key distribution
- Unconditional optimality of Gaussian attacks against continuous-variable QKD
- Quantum key distribution over 25 km with an all-fiber continuous-variable system
- Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography
- A de Finetti representation theorem for infinite dimensional quantum systems and applications to quantum cryptography
- Long Distance Continuous-Variable Quantum Key Distribution with a Gaussian Modulation
- Multidimensional reconciliation for continuous-variable quantum key distribution
- Experimental study on Gaussian-modulated coherent states quantum key distribution over standard telecom fiber
- Field test of a continuous-variable quantum key distribution prototype
- Continuous-Variable Quantum Key Distribution using Thermal States
- Continuous-variable quantum key distribution with Gaussian source noise
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