Wavelength Division Multiplexing of 194 Continuous Variable Quantum Key Distribution Channels
Tobias A. Eriksson, Ruben S. Lúıs, Benjamin J. Puttnam, Georg Rademacher, Mikio Fujiwara, Yoshinari Awaji, Hideaki Furukawa, Naoya Wada, Masahiro Takeoka, Masahide Sasaki
Abstract
We demonstrate the first continuous variable quantum key distribution (CV-QKD) system with fully digital phase and polarization tracking, enabling the first wavelength division multiplexing experiment for CV-QKD. We transmit 194 × 0.5 GHz channels with 25 GHz channel spacing, demonstrating an aggregate estimated asymptotic secret key rate of 172.6 Mbit/s over 25 km.
Topics & Concepts
Quantum key distributionMultiplexingWavelength-division multiplexingChannel spacingQuantum channelElectronic engineeringChannel (broadcasting)Continuous variableQuantum cryptographyOpticsComputer scienceWavelengthPhysicsQuantum entanglementTelecommunicationsQuantumMathematicsEngineeringQuantum informationPhotonQuantum mechanicsMathematical optimizationQuantum Information and CryptographyQuantum Computing Algorithms and ArchitectureQuantum and electron transport phenomena