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arXiv · 0810.4785

Photon bunching in parametric down-conversion with continuous wave excitation

Bibiane Blauensteiner·Isabelle Herbauts·Stefano Bettelli·Andreas Poppe·Hannes Hübel
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Abstract

The first direct measurement of photon bunching (g2 correlation function) in one output arm of a spontaneous-parametric-down-conversion source operated with a continuous pump laser in the single-photon regime is demonstrated. The result is in agreement with the statistics of a thermal field of the same coherence length, and shows the feasibility of investigating photon statistics with compact cw-pumped sources. Implications for entanglement-based quantum cryptography are discussed.

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Bibiane Blauensteiner, Isabelle Herbauts, Stefano Bettelli, Andreas Poppe, Hannes Hübel. 2009-06-08. Photon bunching in parametric down-conversion with continuous wave excitation. https://doi.org/10.1103/physreva.79.063846

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