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Spatially entangled states of light in nonlinear waveguide arrays - INVITED

Arnault Raymond, Saverio Francesconi, José M. Palomo +7 more

We demonstrate a nonlinear AlGaAs photonic chip generating biphotons with nonclassical spatial correlations. Photon pairs are generated by parametric down conversion in a waveguide array and simultaneously spread through quantum walks along the various waveguides. This concept implements a compact and versatile source of spatially entangled states, operating at room temperature and telecom wavelength, that could serve as a workbench for simulating condensed matter problems on-chip.

EPJ Web of ConferencesJan 1, 20230 citations

Generation of entangled photon states in nonlinear nanostructures and metamaterials

Alexander N. Poddubny

Bulletin of the American Physical SocietyMar 16, 20170 citations

High-dimensional entanglement and topological protection in nonlinear waveguide arrays

Alessandro Zecchetto, Arnault Raymond, Jean‐René Coudevylle +6 more

We demonstrate a nonlinear AlGaAs photonic chip generating biphotons with high-dimensional spatial correlations. Photon pairs are generated by parametric down conversion in a waveguide array and simultaneously spread through quantum walks along the various waveguides, allowing to generate various types of high-dimensional entangled states of light. We further implement the Su-Schriefer-Heeger model and demonstrate the topological protection of the SPDC process against disorder. These results highlight nonlinear waveguide arrays as a promising platform for exploring the interplay between nonlinearity, disorder and topology in quantum photonic circuits.We demonstrate a nonlinear AlGaAs photonic chip generating biphotons with high-dimensional spatial correlations. Photon pairs are generated by parametric down conversion in a waveguide array and simultaneously spread through quantum walks along the various waveguides, allowing to generate various types of high-dimensional entangled states of light. We further implement the Su-Schriefer-Heeger model and demonstrate the topological protection of the SPDC process against disorder. These results highlight nonlinear waveguide arrays as a promising platform for exploring the interplay between nonlinearity, disorder and topology in quantum photonic circuits.

Sep 22, 20250 citations

Engineering Nonlinear Optic Sources of Photonic Entanglement

Juan P. Torres, Konrad Banaszek, Ian A. Walmsley

Progress in opticsJan 1, 201167 citations

Generation of entangled macroscopic light fields with a coupled gain-loss waveguide

Saeid Vashahri-Ghamsari, Bing He, Min Xiao

Bulletin of the American Physical SocietyMay 26, 20160 citations

High-dimensional entanglement and topological protection in nonlinear waveguide arrays

Alessandro Zecchetto, Arnault Raymond, Jean‐René Coudevylle +6 more

We demonstrate a nonlinear AlGaAs photonic chip generating biphotons with high-dimensional spatial correlations. Photon pairs are generated by parametric down conversion in a waveguide array and simultaneously spread through quantum walks along the various waveguides, allowing to generate various types of high-dimensional entangled states of light. We further implement the Su-Schriefer-Heeger model and demonstrate the topological protection of the SPDC process against disorder. These results highlight nonlinear waveguide arrays as a promising platform for exploring the interplay between nonlinearity, disorder and topology in quantum photonic circuits.We demonstrate a nonlinear AlGaAs photonic chip generating biphotons with high-dimensional spatial correlations. Photon pairs are generated by parametric down conversion in a waveguide array and simultaneously spread through quantum walks along the various waveguides, allowing to generate various types of high-dimensional entangled states of light. We further implement the Su-Schriefer-Heeger model and demonstrate the topological protection of the SPDC process against disorder. These results highlight nonlinear waveguide arrays as a promising platform for exploring the interplay between nonlinearity, disorder and topology in quantum photonic circuits.

EPJ Web of ConferencesJan 1, 20250 citations

Generation of spatially entangled states of light in nonlinear waveguide arrays

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