Frequency-domain engineering of bright squeezed vacuum for continuous-variable quantum information

• URL: http://arxiv.org/abs/2305.10248v1
• Date: Wed, 17 May 2023 14:36:41 GMT
• Title: Frequency-domain engineering of bright squeezed vacuum for continuous-variable quantum information
• Authors: Inbar Hurvitz, Aviv Karnieli, Ady Arie
• Abstract summary: Multimode bright squeezed vacuum is a non-classical state of light hosting a macroscopic photon number. We propose the design of quantum correlations over two-dimensional lattice geometries that are all-optically controlled.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Multimode bright squeezed vacuum is a non-classical state of light hosting a macroscopic photon number while offering promising capacity for encoding quantum information in its spectral degree of freedom. Here, we employ an accurate model for parametric downconversion in the high-gain regime and use nonlinear holography to design quantum correlations of bright squeezed vacuum in the frequency domain. We propose the design of quantum correlations over two-dimensional lattice geometries that are all-optically controlled, paving the way toward continuous-variable cluster state generation on an ultrafast timescale. Specifically, we investigate the generation of a square cluster state in the frequency domain and calculate its covariance matrix and the quantum nullifier uncertainties, that exhibit squeezing below the vacuum noise level.

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