Ultranarrow Faraday rotation filter for creating narrowband atom-resonant entangled photon pairs
[ANGLÈS] We describe experimental results on a novel optical filter based on the FADOF (Faraday Anomalous Dispersion Optical Filter) principle, and its application to production of atom-resonant entangled photon pairs at the D_1 line of atomic rubidium. The filter uses natural-abundance rubidium vap...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2013 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2099.1/19825 |
| Acceso en línea: | https://hdl.handle.net/2099.1/19825 |
| Access Level: | acceso abierto |
| Palabra clave: | Quantum optics Òptica quàntica Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica |
| Sumario: | [ANGLÈS] We describe experimental results on a novel optical filter based on the FADOF (Faraday Anomalous Dispersion Optical Filter) principle, and its application to production of atom-resonant entangled photon pairs at the D_1 line of atomic rubidium. The filter uses natural-abundance rubidium vapor in an axial magnetic field to produce Faraday rotation up to pi/2 in the transparent regions adjacent to Rb absorption features. When the Faraday rotator is placed between crossed polarizers, the resulting system shows a 400 MHz FWHM transmission window with 70% peak transmission, and out-of-band rejection up to 10^5. Using this device we demonstrate selection of atom-resonant photon pairs from a type-I cavity-enhanced spontaneous parametric downconversion source (CESPDC). We also present an exact calculation of the time correlations, i.e., the g^(2)(T), of photons from the CESPDC. This is the first time fully-indistinguishable atom-resonant photon pairs have been observed. |
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