High-Rate Continuous Variable Quantum Key Distribution Based on Probabilistically Shaped 64 and 256-QAM

François Roumestan (1) , Amirhossein Ghazisaeidi (1) , Jeremie Renaudier (1) , Luis Trigo Vidarte (2) , Eleni Diamanti (2) , Philippe Grangier (3)

1 Nokia Bell Labs [Paris-Saclay]
2 QI - Information Quantique [LIP6]
3 Laboratoire Charles Fabry / Optique Quantique

We designed a CV-QKD system with off-the-shelf components and established the feasibility of distributing 67.6 and 66.8 Mb/s secret key rates on average over a 9.5 km SMF link, using respectively probabilistically shaped 64 and 256 QAM, and relying on a novel analytical security proof.

Domaines: Optique [physics.optics]

François Roumestan, Amirhossein Ghazisaeidi, Jeremie Renaudier, Luis Trigo Vidarte, Eleni Diamanti, et al.. High-Rate Continuous Variable Quantum Key Distribution Based on Probabilistically Shaped 64 and 256-QAM. 2021 European Conference on Optical Communication (ECOC), Sep 2021, Bordeaux, France. pp.1-4, ⟨10.1109/ECOC52684.2021.9606013⟩. ⟨hal-03454455⟩