https://doi.org/10.1051/epjconf/202328706014
Spatially entangled states of light in nonlinear waveguide arrays - INVITED
1 Université Paris Cité, CNRS, MPQ, 75013 Paris, France
2 LPENS, Université PSL, CNRS, 75005 Paris, France
3 Université Paris-Saclay, CNRS, C2N, Palaiseau, France
4 Université Côte d’Azur, InPhyNi, CNRS, Nice, France
* Corresp. author: florent.baboux@u-paris.fr
Published online: 18 October 2023
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.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
