Performance of continuous variable quantum key distribution system at different detector bandwidth

X. Tang; R. Kumar; S. Ren; A. Wonfor; R. V. Penty; I. H. White

doi:10.1016/j.optcom.2020.126034

Performance of continuous variable quantum key distribution system at different detector bandwidth

X. Tang, R. Kumar, S. Ren, A. Wonfor, R. V. Penty, I. H. White

Vice Chancellor's Office

Research output: Contribution to journal › Article › peer-review

16 Citations (SciVal)

Abstract

We evaluate the performance of Gaussian Modulated Coherent State (GMCS) Continuous-Variable Quantum Key Distribution (CV-QKD), in terms of secure key rate, at different detector bandwidths. We illustrate the advantages and limitations of high-speed CV-QKD systems using a general noise model in which we consider various noise sources and their dependence upon detection bandwidth. Experimentally, the feasibility of high speed CV-QKD is demonstrated by using a GHz bandwidth balanced homodyne detector (BHD) established with commercially available components. We provide secure key rates of transmitted and local local oscillator schemes under various clock rates.

Original language	English
Article number	126034
Journal	Optics Communications
Volume	471
Early online date	27 Apr 2020
DOIs	https://doi.org/10.1016/j.optcom.2020.126034
Publication status	Published - 15 Sept 2020

Funding

This work was supported by the UK EPSRC QuantumTechnology Hub for Quantum Communications Technologies project EP/M013472/1.

Keywords

Balanced homodyne detector
Continuous variable quantum key distribution
Gaussian modulated coherent state protocol
Quantum key distribution

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.optcom.2020.126034

http://eprints.whiterose.ac.uk/160168/Licence: CC BY-NC-ND

Cite this

@article{33c8fc00fcdc429ba109108a1f10fd4d,

title = "Performance of continuous variable quantum key distribution system at different detector bandwidth",

abstract = "We evaluate the performance of Gaussian Modulated Coherent State (GMCS) Continuous-Variable Quantum Key Distribution (CV-QKD), in terms of secure key rate, at different detector bandwidths. We illustrate the advantages and limitations of high-speed CV-QKD systems using a general noise model in which we consider various noise sources and their dependence upon detection bandwidth. Experimentally, the feasibility of high speed CV-QKD is demonstrated by using a GHz bandwidth balanced homodyne detector (BHD) established with commercially available components. We provide secure key rates of transmitted and local local oscillator schemes under various clock rates.",

keywords = "Balanced homodyne detector, Continuous variable quantum key distribution, Gaussian modulated coherent state protocol, Quantum key distribution",

author = "X. Tang and R. Kumar and S. Ren and A. Wonfor and Penty, {R. V.} and White, {I. H.}",

year = "2020",

month = sep,

day = "15",

doi = "10.1016/j.optcom.2020.126034",

language = "English",

volume = "471",

journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Performance of continuous variable quantum key distribution system at different detector bandwidth

AU - Tang, X.

AU - Kumar, R.

AU - Ren, S.

AU - Wonfor, A.

AU - Penty, R. V.

AU - White, I. H.

PY - 2020/9/15

Y1 - 2020/9/15

N2 - We evaluate the performance of Gaussian Modulated Coherent State (GMCS) Continuous-Variable Quantum Key Distribution (CV-QKD), in terms of secure key rate, at different detector bandwidths. We illustrate the advantages and limitations of high-speed CV-QKD systems using a general noise model in which we consider various noise sources and their dependence upon detection bandwidth. Experimentally, the feasibility of high speed CV-QKD is demonstrated by using a GHz bandwidth balanced homodyne detector (BHD) established with commercially available components. We provide secure key rates of transmitted and local local oscillator schemes under various clock rates.

AB - We evaluate the performance of Gaussian Modulated Coherent State (GMCS) Continuous-Variable Quantum Key Distribution (CV-QKD), in terms of secure key rate, at different detector bandwidths. We illustrate the advantages and limitations of high-speed CV-QKD systems using a general noise model in which we consider various noise sources and their dependence upon detection bandwidth. Experimentally, the feasibility of high speed CV-QKD is demonstrated by using a GHz bandwidth balanced homodyne detector (BHD) established with commercially available components. We provide secure key rates of transmitted and local local oscillator schemes under various clock rates.

KW - Balanced homodyne detector

KW - Continuous variable quantum key distribution

KW - Gaussian modulated coherent state protocol

KW - Quantum key distribution

UR - http://www.scopus.com/inward/record.url?scp=85083894938&partnerID=8YFLogxK

U2 - 10.1016/j.optcom.2020.126034

DO - 10.1016/j.optcom.2020.126034

M3 - Article

AN - SCOPUS:85083894938

SN - 0030-4018

VL - 471

JO - Optics Communications

JF - Optics Communications

M1 - 126034

ER -

Performance of continuous variable quantum key distribution system at different detector bandwidth

Abstract

Funding

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this