Security against collective attacks for a continuous-variable quantum key distribution protocol using homodyne detection and postselection
arXiv:2205.11820 · doi:10.7566/JPSJ.92.014001
Abstract
We analyze the security against collective attacks for a homodyne-based continuous-variable quantum key distribution protocol using binary coherent states and postselection. We derive a lower bound of the secret key rate in an asymptotic scenario, and numerically optimize it for the case of a symmetric Gaussian channel.
arXiv comment7 pages, 2 figures
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