Performance and security of 5 GHz repetition rate polarization-based quantum key distribution
Fadri Grünenfelder, Alberto Boaron, Davide Rusca, Anthony Martin, Hugo Zbinden
Abstract
We present and characterize a source for a 5 GHz clocked polarization-based simplified BB84 protocol. Secret keys are distributed over 151.5 km of standard telecom fiber at a rate of 54.5 kbps. Potentially, an increased clock frequency of the experiment introduces correlations between succeeding pulses. We discuss the impact of these correlations and propose measurements to estimate the relevant parameters.
Topics & Concepts
Quantum key distributionComputer scienceBB84Electronic engineeringKey (lock)Quantum cryptographyRepetition (rhetorical device)Bit ratePhysicsQuantumOptical fiberDistribution (mathematics)Clock rateTopology (electrical circuits)Quantum opticsElectrical engineeringTelecommunicationsFiberOptoelectronicsCryptographyQuantum Information and CryptographyOptical Network TechnologiesAdvanced Photonic Communication Systems