Spectral properties of three-photon entangled states generated via three-photon 
parametric down-conversion in a chi((3)) medium

Chekhova, MV; Ivanova, OA; Berardi, V; Garuccio, A

doi:10.1103/PhysRevA.72.023818

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Spectral properties of three-photon entangled states generated via three-photon parametric down-conversion in a chi((3)) medium

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Chekhova, M., Ivanova, O., Berardi, V., & Garuccio, A. (2005). Spectral properties of three-photon entangled states generated via three-photon parametric down-conversion in a chi((3)) medium. PHYSICAL REVIEW A, 72(2): 023818. doi:10.1103/PhysRevA.72.023818.

Cite as: https://hdl.handle.net/21.11116/0000-0001-DF80-3

Abstract

We consider the quantum state of light produced via direct parametric decay of pump photons into photon triples in a medium with cubic nonlinearity. For this state generated in the near-collinear frequency-degenerate regime, the third- and second-order Glauber's correlation functions are calculated and the intensity distribution over frequency and wave vector is found. It is shown that the number of photons generated into a single mode via the three-photon down-conversion is proportional to the width of the frequency-angular intensity distribution for the corresponding two-photon phase matching (spontaneous parametric down-conversion). The intensity of three-photon parametric down-conversion is shown to have an extremely broad frequency spectrum, even for a fixed angle of scattering.