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

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...

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Bibliographic Details
Published in:arXiv.org 2023-05
Main Authors: Hurvitz, Inbar, Karnieli, Aviv, Ady Arie
Format: Article
Language:English
Subjects:
Clusters
Continuity (mathematics)
Covariance matrix
Frequency domain analysis
High gain
Mathematical analysis
Noise levels
Quantum phenomena
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2305.10248