Work

Continuous variable quantum key distribution with multi-mode signals for noisy detectors

Year: 2019

Type: article

Abstract: This paper proposes a multi-mode Gaussian modulated continuous variable quantum key distribution (CV-QKD) scheme able to operate at high bandwidth despite using conventional noisy, coherent detectors. We demonstrate enhancement in shot-noise sensitivity as well as reduction in the electronic noise variance of the coherent receiver of the multi-mode CV-QKD system. A proof-of-concept simulation is presented using multiple modes; this demonstrates an increase in signal-to-noise ratio and secure key rate at various transmission distances with increasing signal modes.

Source: Journal of the Optical Society of America B

DOI: 10.1364/josab.36.00b109

Authors: Rupesh Kumar, Xinke Tang, Adrian Wonfor, Richard Penty, Ian White

Institutions: University of York, University of Cambridge

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funder: Engineering and Physical Sciences Research Council

Awards: G2505040309, UK Quantum Technology Hub for Quantum Communications Technologies