Testing spectral filters as Gaussian quantum optical channels

Abstract

We experimentally investigate the mode characteristics of multimode radiation fields propagating through frequency dependent Gaussian channels. After manipulating the twin beams emitted from a conventional parametric down-conversion source via spectral filtering, we study the changes in their mode characteristics, utilizing the joint normalized correlation functions. While filtering reduces the number of spectral modes, it also leads to an apparent mode mismatch, which destroys the perfect photon-number correlation between the twin beams, and influences the mode properties of heralded states.

3 pages, 2 figures

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• Twin Photon Correlations in Single-Photon Interference
• Measuring higher-order photon correlations of faint quantum light: a short review
• Characteristics of displaced single photons attained via higher order factorial moments
• Optimizing the spectro-temporal properties of photon pairs from Bragg-reflection waveguides
• Photon-number parity of heralded single photons from a Bragg-reflection waveguide reconstructed loss-tolerantly via moment generating function
• Nonlinear Photon Pair Generation in a Highly Dispersive Medium