Bright Integrated Photon-Pair Source for Practical Passive Decoy-State Quantum Key Distribution

Abstract

We report on a bright, nondegenerate type-I parametric down-conversion source, which is well suited for passive decoy-state quantum key distribution. We show the photon-number-resolved analysis over a broad range of pump powers and we prove heralded higher-order $n$-photon states up to $n=4$. The inferred photon click statistics exhibit excellent agreements to the theoretical predictions. From our measurement results we conclude that our source meets the requirements to avert photon-number-splitting attacks.

5 pages, 4 figures

References in corpus (8)

• Hacking commercial quantum cryptography systems by tailored bright illumination
• Photon number resolution using a time-multiplexed single-photon detector
• Breaking a quantum key distribution system through a timing side channel
• Passive decoy state quantum key distribution: Closing the gap to perfect sources
• Photon Number Statistics of Multimode Parametric Down-Conversion
• Direct, Loss-Tolerant Characterization of Nonclassical Photon Statistics
• An Efficient Integrated Two-Color Source for Heralded Single Photons
• Avalanche Photo-Detection for High Data Rate Applications

Cited by in corpus (6)

• On-chip generation of photon-triplet states
• A fully passive transmitter for decoy-state quantum key distribution
• Broadband indistinguishability from bright parametric downconversion in a semiconductor waveguide
• Tight finite-key analysis for passive decoy-state quantum key distribution under general attacks
• Practical high-dimensional quantum key distribution with decoy states
• Spectral mapping of polarization-correlated photon-pair sources using quantum-classical correspondence