Quantum-to-the-Home: Achieving Gbits/s Secure Key Rates via Commercial Off-the-Shelf Telecommunication Equipment

Asif, Rameez; Buchanan, William J.

Abstract

There is current significant interest in Fiber-to-the-Home (FTTH) networks, i.e. end-to-end optical connectivity. Currently, it may be limited due to the presence of last-mile copper wire connections. However, in near future it is envisaged that FTTH connections will exist, and a key offering would be the possibility of optical encryption that can best be implemented using quantum key distribution (QKD). However, it is very important that the QKD infrastructure is compatible with the already existing networks for a smooth transition and integration with the classical data traffic. In this paper, we report the feasibility of using off-the-shelf telecommunication components to enable high performance Continuous-Variable Quantum Key Distribution (CV-QKD) systems that can yield secure key rates in the range of 100 Mbits/s under practical operating conditions. Multilevel phase modulated signals (m-PSK) are evaluated in-terms of secure key rates and transmission distances. The traditional receiver is discussed, aided by the phase noise cancellation based digital signal processing module for detecting the complex quantum signals. Furthermore , we have discussed the compatibility of multiplexers and de-multiplexers for wavelength division multiplexed quantum-to-the-home (QTTH) network as well the impact of splitting ratio is analyzed. The results are thoroughly compared with the commercially available high-cost encryption modules.

Citation

Asif, R., & Buchanan, W. J. (2017). Quantum-to-the-Home: Achieving Gbits/s Secure Key Rates via Commercial Off-the-Shelf Telecommunication Equipment. Security and Communication Networks, 2017, 1-10. https://doi.org/10.1155/2017/7616847

• Journal Article Type: Article
• Acceptance Date: Jun 27, 2017
• Online Publication Date: Jul 10, 2017
• Publication Date: 2017
• Deposit Date: Aug 4, 2017
• Publicly Available Date: Jul 25, 2019
• Journal: Security and Communication Networks
• Print ISSN: 1939-0114
• Electronic ISSN: 1939-0122
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• Volume: 2017
• Pages: 1-10
• DOI: https://doi.org/10.1155/2017/7616847
• Keywords: Quantum communications; Cryptography; Encryption; Broadband Networks; Secret Key Distribution; Signal Processing; Network Security
• Public URL: http://researchrepository.napier.ac.uk/Output/972428
• Contract Date: Aug 4, 2017