Tx-Rx Mode Mismatch Effects in Gaussian-Modulated CV QKD

Mateusz Kucharczyk; Michal Jachura; Marcin Jarzyna; Konrad Banaszek; Amirhossein Ghazisaeidi

Tx-Rx Mode Mismatch Effects in Gaussian-Modulated CV QKD

Quantum Physics 2025-04-30 v1

Authors: Mateusz Kucharczyk , Michal Jachura , Marcin Jarzyna , Konrad Banaszek , Amirhossein Ghazisaeidi

Abstract

The impact of technical limitations on pulse shaping used to generate a CV QKD signal is quantified in terms of the attainable secure key rate. Optimization of key spectral efficiency for Gaussian-modulated CV QKD with truncated and discretized root-raised cosine profiles is discussed.

Cite

@article{arxiv.2504.20632,
  title  = {Tx-Rx Mode Mismatch Effects in Gaussian-Modulated CV QKD},
  author = {Mateusz Kucharczyk and Michal Jachura and Marcin Jarzyna and Konrad Banaszek and Amirhossein Ghazisaeidi},
  journal= {arXiv preprint arXiv:2504.20632},
  year   = {2025}
}

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