Multidimensional Manifold Extraction for Multicarrier Continuous-Variable Quantum Key Distribution
arXiv:1405.6948
Abstract
We introduce the multidimensional manifold extraction for multicarrier continuous-variable (CV) quantum key distribution (QKD). The manifold extraction utilizes the resources that are injected into the transmission by the additional degrees of freedom of the multicarrier modulation. We demonstrate the results through the AMQD (adaptive multicarrier quadrature division) scheme, which granulates the information into Gaussian subcarrier CVs and divides the physical link into several Gaussian sub-channels for the transmission. We prove that the exploitable extra degree of freedom in a multicarrier CVQKD scenario significantly extends the possibilities of single-carrier CVQKD. The manifold extraction allows for the parties to reach decreased error probabilities by utilizing those extra resources of a multicarrier transmission that are not available in a single-carrier CVQKD setting. We define the multidimensional manifold space of multicarrier CVQKD and the optimal tradeoff between the available degrees of freedom of the multicarrier transmission. We also extend the manifold extraction for the multiple-access AMQD-MQA (multiuser quadrature allocation) multicarrier protocol. The additional resources of multicarrier CVQKD allow the achievement of significant performance improvements that are particularly crucial in an experimental scenario.
39 pages, 5 figures
References in corpus (10)
- Experimental demonstration of long-distance continuous-variable quantum key distribution
- Unconditional optimality of Gaussian attacks against continuous-variable QKD
- Optimality of Gaussian Attacks in Continuous Variable Quantum Cryptography
- Continuous Variable Quantum Cryptography using Two-Way Quantum Communication
- Collective attacks and unconditional security in continuous variable quantum key distribution
- EXIT-Chart Aided Near-Capacity Quantum Turbo Code Design
- Multiple Access Multicarrier Continuous-Variable Quantum Key Distribution
- On continuous variable quantum algorithms for oracle identification problems
- Properties of the Quantum Channel
- Security Thresholds of Multicarrier Continuous-Variable Quantum Key Distribution
Cited by in corpus (4)
- Adaptive Quadrature Detection for Multicarrier Continuous-Variable Quantum Key Distribution
- Distribution Statistics and Random Matrix Formalism of Multicarrier Continuous-Variable Quantum Key Distribution
- Statistical Quadrature Evolution by Inference for Continuous-Variable Quantum Key Distribution
- Iterative Secret Key Rate Adapting with Error Minimization for Continuous-Variable Quantum Key Distribution