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

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

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Abstract

In local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference between the linewidth values of two free-running lasers at Alice and Bob induces a phase drift noise. This work proposes a novel minimax filter-based phase tracking that aims to minimize the phase drift considering maximum residual phase error to achieve optimal phase estimation. Simulation results show that the minimax filter offers a lower phase estimation mean square error (MSE) value compared to the Kalman filter when worst-case phase drift error due to high linewidth difference or high measurement noise values are considered.

Original language	English
Title of host publication	2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP)
Publisher	IEEE
Pages	499-502
Number of pages	4
ISBN (Electronic)	978-1-6654-1044-1
DOIs	https://doi.org/10.1109/CSNDSP54353.2022.9907992
Publication status	Published - 6 Oct 2022
Event	2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing - Porto, Portugal Duration: 20 Jul 2022 → 22 Jul 2022 Conference number: 13th https://csndsp2022.av.it.pt/

Publication series

Name	2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022

Conference

Conference	2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing
Abbreviated title	CSNDSP
Country/Territory	Portugal
City	Porto
Period	20/07/22 → 22/07/22
Internet address	https://csndsp2022.av.it.pt/

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

Access to Document

10.1109/CSNDSP54353.2022.9907992

Post-PrintAccepted author manuscript, 959 KB

Cite this

Al-sallami, F., Rajbhandari, S., Ahmad, Z., & Grace, D. (2022). Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution. In 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP) (pp. 499-502). (2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022). IEEE. https://doi.org/10.1109/CSNDSP54353.2022.9907992

Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution. / Al-sallami, Farah; Rajbhandari, Sujan; Ahmad, Zahir et al.
2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP). IEEE, 2022. p. 499-502 (2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

Al-sallami, F, Rajbhandari, S, Ahmad, Z & Grace, D 2022, Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution. in 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP). 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022, IEEE, pp. 499-502, 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing , Porto, Portugal, 20/07/22. https://doi.org/10.1109/CSNDSP54353.2022.9907992

Al-sallami F, Rajbhandari S, Ahmad Z, Grace D. Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution. In 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP). IEEE. 2022. p. 499-502. (2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022). doi: 10.1109/CSNDSP54353.2022.9907992

Al-sallami, Farah ; Rajbhandari, Sujan ; Ahmad, Zahir et al. / 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). IEEE, 2022. pp. 499-502 (2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing, CSNDSP 2022).

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abstract = "In local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference between the linewidth values of two free-running lasers at Alice and Bob induces a phase drift noise. This work proposes a novel minimax filter-based phase tracking that aims to minimize the phase drift considering maximum residual phase error to achieve optimal phase estimation. Simulation results show that the minimax filter offers a lower phase estimation mean square error (MSE) value compared to the Kalman filter when worst-case phase drift error due to high linewidth difference or high measurement noise values are considered.",

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AB - In local oscillator (LLO)-based continuous-variable quantum key distribution (CV-QKD), a difference between the linewidth values of two free-running lasers at Alice and Bob induces a phase drift noise. This work proposes a novel minimax filter-based phase tracking that aims to minimize the phase drift considering maximum residual phase error to achieve optimal phase estimation. Simulation results show that the minimax filter offers a lower phase estimation mean square error (MSE) value compared to the Kalman filter when worst-case phase drift error due to high linewidth difference or high measurement noise values are considered.

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Scalar Minimax Filter-based Phase Tracking for Continuous-Variable Quantum Key Distribution

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