Scalar minimax filter-based phase tracking for continuous-variable quantum key distribution

Farah Al-sallami; Sujan Rajbhandari; Zahir Ahmad; David Grace

doi:10.1109/CSNDSP54353.2022.9907992

Scalar minimax filter-based phase tracking for continuous-variable quantum key distribution

Farah Al-sallami, Sujan Rajbhandari, Zahir Ahmad, David Grace

Institute Of Photonics

Research output: Contribution to conference › Paper › peer-review

Abstract

In local local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference betweenthe linewidth values of two free-running lasers at Alice and Bobinduces a phase drift noise. This work proposes a novel minimaxfilter-based phase tracking that aims to minimize the phase driftconsidering maximum residual phase error to achieve optimalphase estimation. Simulation results show that the minimax filteroffers a lower phase estimation mean square error (MSE) valuecompared to the Kalman filter when worst-case phase drift errordue to high linewidth difference or high measurement noise valuesare considered.

Original language	English
Number of pages	4
DOIs	https://doi.org/10.1109/CSNDSP54353.2022.9907992
Publication status	Published - 1 Sept 2022
Event	13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) - Porto, Portugal Duration: 20 Jul 2022 → 22 Jul 2022

Conference

Conference	13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)
Abbreviated title	CSNDSP
Country/Territory	Portugal
City	Porto
Period	20/07/22 → 22/07/22

Keywords

local oscillators
phase measurement
simulation
phase estimation
measurement uncertainty
mean square error methods
quantum key distribution

Access to Document

10.1109/CSNDSP54353.2022.9907992

Cite this

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title = "Scalar minimax filter-based phase tracking for continuous-variable quantum key distribution",

abstract = "In local local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference betweenthe linewidth values of two free-running lasers at Alice and Bobinduces a phase drift noise. This work proposes a novel minimaxfilter-based phase tracking that aims to minimize the phase driftconsidering maximum residual phase error to achieve optimalphase estimation. Simulation results show that the minimax filteroffers a lower phase estimation mean square error (MSE) valuecompared to the Kalman filter when worst-case phase drift errordue to high linewidth difference or high measurement noise valuesare considered.",

keywords = "local oscillators, phase measurement, simulation, phase estimation, measurement uncertainty, mean square error methods, quantum key distribution",

author = "Farah Al-sallami and Sujan Rajbhandari and Zahir Ahmad and David Grace",

note = "{\textcopyright} Copyright 2022 IEEE - All rights reserved. F. M. Alsalami, S. Rajbhandari, Z. Ahmad and D. Grace, {"}Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution,{"} 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, 2022, pp. 499-502, doi: 10.1109/CSNDSP54353.2022.9907992; 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), CSNDSP ; Conference date: 20-07-2022 Through 22-07-2022",

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doi = "10.1109/CSNDSP54353.2022.9907992",

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T1 - Scalar minimax filter-based phase tracking for continuous-variable quantum key distribution

AU - Al-sallami, Farah

AU - Rajbhandari, Sujan

AU - Ahmad, Zahir

AU - Grace, David

N1 - © Copyright 2022 IEEE - All rights reserved. F. M. Alsalami, S. Rajbhandari, Z. Ahmad and D. Grace, "Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution," 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), Porto, Portugal, 2022, pp. 499-502, doi: 10.1109/CSNDSP54353.2022.9907992

PY - 2022/9/1

Y1 - 2022/9/1

N2 - In local local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference betweenthe linewidth values of two free-running lasers at Alice and Bobinduces a phase drift noise. This work proposes a novel minimaxfilter-based phase tracking that aims to minimize the phase driftconsidering maximum residual phase error to achieve optimalphase estimation. Simulation results show that the minimax filteroffers a lower phase estimation mean square error (MSE) valuecompared to the Kalman filter when worst-case phase drift errordue to high linewidth difference or high measurement noise valuesare considered.

AB - In local local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference betweenthe linewidth values of two free-running lasers at Alice and Bobinduces a phase drift noise. This work proposes a novel minimaxfilter-based phase tracking that aims to minimize the phase driftconsidering maximum residual phase error to achieve optimalphase estimation. Simulation results show that the minimax filteroffers a lower phase estimation mean square error (MSE) valuecompared to the Kalman filter when worst-case phase drift errordue to high linewidth difference or high measurement noise valuesare considered.

KW - local oscillators

KW - phase measurement

KW - simulation

KW - phase estimation

KW - measurement uncertainty

KW - mean square error methods

KW - quantum key distribution

U2 - 10.1109/CSNDSP54353.2022.9907992

DO - 10.1109/CSNDSP54353.2022.9907992

M3 - Paper

T2 - 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)

Y2 - 20 July 2022 through 22 July 2022

ER -

Scalar minimax filter-based phase tracking for continuous-variable quantum key distribution

Abstract

Conference

Keywords

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