High-Rate Continuous Variable Quantum Key Distribution Based on Probabilistically Shaped 64 and 256-QAM
François Roumestan, Amirhossein Ghazisaeidi, Jérémie Renaudier, Luis Trigo Vidarte, Eleni Diamanti, Philippe Grangier
Abstract
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.
Topics & Concepts
Quantum key distributionQAMKey (lock)Quadrature amplitude modulationComputer scienceContinuous variableVariable (mathematics)QuantumAlgorithmComputer networkTheoretical computer scienceMathematicsBit error rateComputer securityStatisticsPhysicsQuantum mechanicsDecoding methodsMathematical analysisOptical Network TechnologiesQuantum Information and CryptographyQuantum Computing Algorithms and Architecture