Demonstration of Probabilistic Constellation Shaping for Continuous Variable Quantum Key Distribution

Francois Roumestan (1) , Amirhossein Ghazisaeidi (1) , Jérémie Renaudier (1) , Patrick Brindel (1) , Eleni Diamanti (2) , Philippe Grangier (3)

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

We demonstrate, for the first time to our knowledge, continuous-variable quantum key distribution using probabilistically-shaped 1024-QAM and true local oscillator, achieving 38.3Mb/s secret key rate over 9.5km, averaged over the transmission time of 100 blocks.

Domains: Physics [physics]; Physics [physics]; Optics [physics.optics]

Francois Roumestan, Amirhossein Ghazisaeidi, Jérémie Renaudier, Patrick Brindel, Eleni Diamanti, et al.. Demonstration of Probabilistic Constellation Shaping for Continuous Variable Quantum Key Distribution. Optical Fiber Communication Conference (OFC) 2021, Jun 2021, Washington, United States. pp.F4E.1, ⟨10.1364/OFC.2021.F4E.1⟩. ⟨hal-03454558⟩