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AIP conference proceedings

Observation of time correlation of photon pairs created in photonic crystal fiber

T. Nakanishi, K. Sakami, H. Kobayashi, Kazuhiko Sugiyama, Masao Kitano, Alexander I. Lvovsky

Published Jan 1, 2009• 0 citations
Publisher

Abstract

We observe two‐photon interference of photon pairs from a photonic crystal fiber with the help of an unbalanced Mach‐Zehnder interferometer. Two‐photon interference fringes with 83% visibility, which exceed the classical limit of 50%, are obtained. The correlation time of the photon pairs is roughly estimated to be 0.2 ps
DOI
10.1063/1.3131315

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We investigate a method to produce photon pairs by four-wave mixing in photonic crystal fibers (PCFs). By controlling the wavelength of the pump light, which determines the phase matching condition for four-wave mixing, we can obtain a broader spectrum of photon pairs than undesired Raman-scattered photons. We observe two-photon interference of photon pairs from a PCF with the help of an unbalanced Mach-Zehnder interferometer. Two-photon interference fringes with 83% visibility, which exceeds the classical limit of 50%, are obtained.
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