{"id":197344,"date":"2025-10-17T12:09:04","date_gmt":"2025-10-17T12:09:04","guid":{"rendered":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/spontaneous-parametric-down-conversion-spdc-photon-source\/"},"modified":"2025-10-17T12:09:14","modified_gmt":"2025-10-17T12:09:14","slug":"spontaneous-parametric-down-conversion-spdc-photon-source","status":"publish","type":"topic","link":"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/spontaneous-parametric-down-conversion-spdc-photon-source\/","title":{"rendered":"Spontaneous Parametric Down-Conversion (SPDC) Photon Source"},"content":{"rendered":"<p>This example demonstrates how to model a realistic photon source and use it as input to qINTERCONNECT. The photon generation rate and wavefunction are calculated for a Type-I SPDC process in a localized segment of length L with a chi^{(2)} nonlinearity in a straight waveguide, where pump photons are converted to pairs of signal and idler photons such that energy conservation and phase matching conditions are satisfied. Interference between photons from two independent sources is demonstrated for identical and non-identical sources.<br \/>\nRead the full article here: <a target=\"_blank\" href=\"https:\/\/optics.ansys.com\/hc\/en-us\/articles\/10867833819923\" rel=\"noopener\">https:\/\/optics.ansys.com\/hc\/en-us\/articles\/10867833819923<\/a><\/p>\n","protected":false},"template":"","class_list":["post-197344","topic","type-topic","status-publish","hentry","topic-tag-lumerical"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"This example demonstrates how to model a realistic photon source and use it as input to qINTERCONNECT. The photon generation rate and wavefunction are calculated for a Type-I SPDC process in a localized segment of length L with a chi^{(2)} nonlinearity in a straight waveguide, where pump photons are converted to pairs of signal and\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/knowledge\/forums\/topic\/spontaneous-parametric-down-conversion-spdc-photon-source\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Knowledge | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"Spontaneous Parametric Down-Conversion (SPDC) Photon Source | Ansys Knowledge\" \/>\n\t\t<meta property=\"og:description\" content=\"This example demonstrates how to model a realistic photon source and use it as input to qINTERCONNECT. 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