Related papers: Broadband Entangled-Photon Pair Generation with Integrated Photonics: Guidelines and A Materials Comparison

Broadband Entangled-Photon Pair Generation with Integrated Photonics: Guidelines and A Materials Comparison

URL: http://arxiv.org/abs/2407.04792v1
Date: Fri, 5 Jul 2024 18:08:28 GMT
Title: Broadband Entangled-Photon Pair Generation with Integrated Photonics: Guidelines and A Materials Comparison
Authors: Liao Duan, Trevor J. Steiner, Paolo Pintus, Lillian Thiel, Joshua E. Castro, John E. Bowers, Galan Moody,
Abstract summary: Correlated photon-pair sources are key components for quantum computing, networking, and sensing applications. Integrated photonics has enabled chip-scale sources using nonlinear processes, producing high-rate entanglement with sub-100 microwatt power at telecom wavelengths. This study evaluates broadband entanglement generation through spontaneous four-wave mixing in various nonlinear integrated photonic materials.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Correlated photon-pair sources are key components for quantum computing, networking, and sensing applications. Integrated photonics has enabled chip-scale sources using nonlinear processes, producing high-rate entanglement with sub-100 microwatt power at telecom wavelengths. Many quantum systems operate in the visible or near-infrared ranges, necessitating broadband visible-telecom entangled-pair sources for connecting remote systems via entanglement swapping and teleportation. This study evaluates broadband entanglement generation through spontaneous four-wave mixing in various nonlinear integrated photonic materials, including silicon nitride, lithium niobate, aluminum gallium arsenide, indium gallium phosphide, and gallium nitride. We demonstrate how geometric dispersion engineering facilitates phase-matching for each platform and reveals unexpected results, such as robust designs to fabrication variations and a Type-1 cross-polarized phase-matching condition for III-V materials that expands the operational bandwidth. With experimentally attainable parameters, integrated photonic microresonators with optimized designs can achieve pair generation rates greater than ~1 THz/mW$^2$.

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