2008/05/12 by Wojciech Wasilewski, Czesław Radzewicz, Czeslaw Radzewicz +2
Computer Science · Mathematics · Physics and Astronomy · #Advanced Fiber Laser Technologies #Computer science #Detector #Energy (signal processing) #Interference (communication) #Laser-Matter Interactions and Applications #Mathematics #Optics #Parametric statistics #Photon #Photon counting #Physics #Quantum #Quantum Information and Cryptography #Quantum entanglement #Quantum mechanics #Spontaneous parametric down-conversion #Statistics #Telecommunications #quant-ph
paper · pdf · doi:10.1103/physreva.78.033831
published as Phys. Rev. A 78, 033831 (2008)
arxiv created 2008/05/12 · openalex publication_date 2008/09/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present an experimental characterization of the statistics of multiple photon pairs produced by spontaneous parametric down-conversion realized in a nonlinear medium pumped by high-energy ultrashort pulses from a regenerative amplifier. The photon-number-resolved measurement has been implemented with the help of a fiber loop detector. We introduce an effective theoretical description of the observed statistics based on parameters that can be assigned direct physical interpretation. These parameters, determined for our source from the collected experimental data, characterize the usefulness of down-conversion sources in multiphoton interference schemes that underlie protocols for quantum-information processing and communication.