Hybrid Three-Mode Correlation and Squeezing in a Pr3+:YSO Crystal

Zongchen Liu,Irfan Ahmed,Hongxing Wang,Yanpeng Zhang,Zihai Jiang,Shuwei Fan,Garuma Abdisa

doi:10.1038/s41598-017-01860-8

Zongchen Liu, Irfan Ahmed + Show 5 more

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We report the generation of three-mode hybrid intensity-noise correlation and intensity-difference squeezing of spontaneous parametric four-wave mixing (SP-FWM) and fourth-order fluorescence (FL) signals in the heteronuclear-like (three-level Λ-type) molecular structure of a Pr3+:Y2SiO5 (Pr3+:YSO) crystal using the nonlinear cross-Kerr effect under a polarized dressing effect. In the semi-classical view of a Kerr nonlinear medium, the amplitude of two-mode hybrid correlations of this kind is subject to a limit determined by the hybrid maximally entangled state. Whereas the degree of correlation and squeezing is determined by the dressing effects of the input laser fields participating in the SP-FWM process. We also find that the variations in magnitude of three-mode hybrid intensity-noise correlation and intensity-difference squeezing are consistent with nonlinear cross-Kerr processes. Such a three-mode hybrid signal may have potential applications in long-distance communication, dense coding, all-optical communication and quantum storage on photonic chips.

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The generation of entangled photons is of particular interest in fundamental studies of quantum mechanics and has potential applications in information processing and long-distance communications
We focus on a hybrid state with three-mode intensity-noise correlation and intensity-difference squeezing of spontaneous parametric four-wave mixing (FWM) (SP-FWM) and hybrid FL signals in a Pr:YSO crystal using the nonlinear cross-Kerr effect under polarized dressing fields as Kerr non linearity is directly proportional to the square of the electric field
A quarter-wave plate (QWP) was used to control the polarization state of the dressing field E2, and the power P2 and detuning Δ2 of the dressing field E2 could be modified by changing the parameters of the dye lasers

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Introduction

The generation of entangled photons is of particular interest in fundamental studies of quantum mechanics and has potential applications in information processing and long-distance communications. We focus on a hybrid state with three-mode intensity-noise correlation and intensity-difference squeezing of SP-FWM and hybrid FL signals in a Pr:YSO crystal using the nonlinear cross-Kerr effect under polarized dressing fields as Kerr non linearity is directly proportional to the square of the electric field.

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