Diversity space of multicarrier continuous-variable quantum key distribution
Diversity space of multicarrier continuous-variable quantum key distribution
The diversity space of multicarrier continuous-variable quantum key distribution (CVQKD) is defined. The diversity space utilizes the resources that are injected into the transmission by the additional degrees of freedom of the multicarrier modulation. 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 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.
cryptography, networking, quantum communication, quantum key distribution, security
Gyongyosi, Laszlo
bbfffd90-dfa2-4a08-b5f9-98376b8d6803
Imre, Sandor
2def242c-1cb7-4b12-8a16-351a5a36e041
Gyongyosi, Laszlo
bbfffd90-dfa2-4a08-b5f9-98376b8d6803
Imre, Sandor
2def242c-1cb7-4b12-8a16-351a5a36e041
Gyongyosi, Laszlo and Imre, Sandor
(2019)
Diversity space of multicarrier continuous-variable quantum key distribution.
International Journal of Communication Systems, [e4003].
(doi:10.1002/dac.4003).
Abstract
The diversity space of multicarrier continuous-variable quantum key distribution (CVQKD) is defined. The diversity space utilizes the resources that are injected into the transmission by the additional degrees of freedom of the multicarrier modulation. 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 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.
Text
Gyongyosi_et_al-2019-International_Journal_of_Communication_Systems
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More information
Accepted/In Press date: 18 April 2019
e-pub ahead of print date: 27 June 2019
Keywords:
cryptography, networking, quantum communication, quantum key distribution, security
Identifiers
Local EPrints ID: 432442
URI: http://eprints.soton.ac.uk/id/eprint/432442
ISSN: 1074-5351
PURE UUID: 167a74ef-33c9-47f3-8ac2-ddab4117fd90
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Date deposited: 15 Jul 2019 16:30
Last modified: 16 Mar 2024 02:50
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Contributors
Author:
Laszlo Gyongyosi
Author:
Sandor Imre
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