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Journal Article

Bright integrated photon-pair source for practical passive decoy-state quantum key distribution

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Brecht,  B.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Avenhaus,  M.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Silberhorn,  C.
Silberhorn Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Citation

Krapick, S., Stefszky, M. S., Jachura, M., Brecht, B., Avenhaus, M., & Silberhorn, C. (2014). Bright integrated photon-pair source for practical passive decoy-state quantum key distribution. PHYSICAL REVIEW A, 89(1): 012329. doi:10.1103/PhysRevA.89.012329.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002D-665F-1
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.