Direct generation of entangled photon pairs in nonlinear optical waveguides.

ABSTRACT: Entangled photons are pivotal elements in emerging quantum information technologies. While several schemes are available for the production of entangled photons, they typically require the assistance of cumbersome optical elements to couple them to other components involved in logic operations. Here, we introduce a scheme by which entangled photon pairs are directly generated as guided mode states in optical waveguides. The scheme relies on the intrinsic nonlinearity of the waveguide material, circumventing the use of bulky optical components and their associated phase-matching constraints. Specifically, we consider an optical waveguide under normal illumination, so that photon down-conversion can take place to excite waveguide states with opposite momentum in a spectral region populated b

SUBMITTER: Rodriguez Echarri A 

PROVIDER: S-EPMC11501258 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature