Título

DIRECT OBSERVATION OF ORBITAL ANGULAR MOMENTUM CONSERVATION IN COLLINEAR TYPE-I SPDC

Autor

Carlos Andres Sevilla Gutierrez

Colaborador

ROBERTO RAMIREZ ALARCON (Asesor de tesis)

Nivel de Acceso

Acceso Abierto

Licencia

http://creativecommons.org/licenses/by-nc-nd/4.0

Materias

OAM - (AUTOR) Conservation - (AUTOR) SPDC - (AUTOR) Laguerre-Gauss - (AUTOR) Quantum - (AUTOR) Entanglement - (AUTOR) CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA - (CTI) FÍSICA - (CTI) FÍSICA TEÓRICA - (CTI) TEORÍA CUÁNTICA DE CAMPOS - (CTI) TEORÍA CUÁNTICA DE CAMPOS - (CTI)

Resumen o descripción

"We implement a direct measurement of the spatial modes distribution generated in a collinear type I spontaneous parametric down-conversion (SPDC) process using a triggered intensified CCD camera. This type of experiments have been realized previously. However in those cases the measurement was an indirect one, where both photons were collected into one-pixel detectors. In this thesis, to the best or our knowledge, it is the first time that a direct two dimensional measurement of the spatial modes distribution is made. These are well described by Laguerre-Gaussian modes. In our experiments we could observe up to mode l=+/-10. By exploiting the capabilities of an ICCD camera, it is possible to visualize the orbital angular momentum (OAM) conservation of the unprocessed SPDC bi-photon state. This is performed by observing the diffraction pattern by a triangular aperture. We show the results using this method for modes l=+/-1,+/-2. This conservation of OAM leads to entanglement in OAM, since one photon carries the anti-correlated topological charge with respect to the other one. Therefore, they are conditioned to the state of the other photon."

Fecha de publicación

noviembre de 2018

Tipo de publicación

Tesis de maestría

Versión de la publicación

Versión publicada

Recurso de información

http://cio.repositorioinstitucional.mx/jspui/handle/1002/882

Formato

application/pdf

Idioma

Inglés

Cobertura

León, Guanajuato

Audiencia

Público en general

Sugerencia de citación

Sevilla Gutiérrez, (2018). "Direct observation of orbital angular momentum conservation in collinear Type-I SPDC". Maestría en Ciencias (Óptica). Centro de Investigaciones en Óptica, A.C. León, Guanajuato. 55 pp.

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DEL CIO

Descargas

810