Security against Collective Attacks for a Continuous-Variable Quantum Key Distribution Protocol Using Homodyne Detection and Postselection

Autor: Ryo Namiki
Rok vydání: 2023
Předmět:
Zdroj: Journal of the Physical Society of Japan. 92
ISSN: 1347-4073
0031-9015
Popis: 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.
Comment: 7 pages, 2 figures
Databáze: OpenAIRE