Photon bunching in parametric down-conversion with continuous wave excitation

Bibiane Blauensteiner, Isabelle Manon Herbauts, Stefano Bettelli, Andreas Poppe, Hannes Hübel

Publications: Contribution to journalArticlePeer Reviewed


Direct measurement of photon bunching (g(2) 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 continuous-wave-pumped sources. Implications for entanglement-based quantum cryptography are discussed.
Original languageEnglish
Article number063846
Number of pages6
JournalPhysical Review A
Publication statusPublished - 2009

Austrian Fields of Science 2012

  • 103026 Quantum optics
  • 103025 Quantum mechanics
  • 103040 Photonics

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