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Nonclassical Interference of Multimode Two-Photon Pairs with an Unbalanced Interferometer

Hayato Goto, Haibo Wang, Tomoyuki Horikiri, Yasuo Yanagihara, Takayoshi Kobayashi

Published Mar 25, 2003• 0 citations
OpenAlex

Abstract

Nonclassical interference of multimode two-photon pairs produced by an optical parametric oscillator(OPO) has been observed using an unbalanced interferometer. The time correlation between the multimode two photons has a multi-peaked structure. The use of the multimode two-photon state has enabled the observation of the nonclassical interference at nonzero delay time.

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Nonclassical interference of multimode two-photon pairs produced by an optical parametric oscillator(OPO) has been observed using an unbalanced interferometer. The time correlation between the multimode two photons has a multi-peaked structure. The use of the multimode two-photon state has enabled the observation of the nonclassical interference at nonzero delay time.
Fluctuations in the field of a 2nd order nonlinear multi-mode parametric downcoverter exhibit nonclassical correlations in the transverse plane. We present results of measurements of the classical pattern for a degenerate, multi-mode parametric optical parametric oscillator (OPO) operating above threshold. We also present results of autocorrelation measurements of intensity fluctuations in the transverse plane both in the near field and in the far field with the OPO operating both below and above threshold -- a method we believe will ultimately enable us to display the nonclassical correlations of the OPO output.