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arXiv · 2009.06348

Non-Gaussian Nature and Entanglement of Spontaneous Parametric Nondegenerate Triple-Photon Generation

D. Zhang·Y. Cai·Z. Zheng·D. Barral·Y. Zhang·M. Xiao·K. Bencheikh
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Abstract

How to prepare deterministically non-Gaussian entangled states is a fundamental question for continuous-variable quantum information technology. Here, we theoretically demonstrate through numerical methods that the triple-photon state generated by three-photon spontaneous parametric down-conversion is a pure super-Gaussian resource of non-Gaussian entanglement. Interestingly, the degree of entanglement between the modes of the triple-photon state is stronger than that corresponding to the two-mode squeezed vacuum state produced by a quadratic Hamiltonian with the same parameters. Furthermore, we propose a model to prepare two-mode non-Gaussian entangled states with tunable non-Gaussianity based on quadrature projection measurements.

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D. Zhang, Y. Cai, Z. Zheng, D. Barral, Y. Zhang, M. Xiao, K. Bencheikh. 2020-09-14. Non-Gaussian Nature and Entanglement of Spontaneous Parametric Nondegenerate Triple-Photon Generation. https://doi.org/10.1103/physreva.103.013704

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