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http://cio.repositorioinstitucional.mx/jspui/handle/1002/882| DIRECT OBSERVATION OF ORBITAL ANGULAR MOMENTUM CONSERVATION IN COLLINEAR TYPE-I SPDC | |
| Carlos Andres Sevilla Gutierrez | |
| ROBERTO RAMIREZ ALARCON | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| OAM Conservation SPDC Laguerre-Gauss Quantum Entanglement | |
| "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." | |
| 2018-11 | |
| Tesis de maestría | |
| Inglés | |
| León, Guanajuato | |
| Público en general | |
| 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. | |
| TEORÍA CUÁNTICA DE CAMPOS | |
| Versión publicada | |
| publishedVersion - Versión publicada | |
| Aparece en las colecciones: | MAESTRIA EN CIENCIAS (ÓPTICA) |
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| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| 17467.pdf | Texto completo/Full text | 11.83 MB | Adobe PDF | Visualizar/Abrir |