000125210 001__ 125210 000125210 005__ 20230322092655.0 000125210 037__ $$aTAZ-TFG-2022-2880 000125210 041__ $$aeng 000125210 1001_ $$aAlcaine Cuervo, Jesús Matías 000125210 24200 $$aMultimode Cavity QED 000125210 24500 $$aElectrodinámica Cuántica en Cavidad Multimodo 000125210 260__ $$aZaragoza$$bUniversidad de Zaragoza$$c2022 000125210 506__ $$aby-nc-sa$$bCreative Commons$$c3.0$$uhttp://creativecommons.org/licenses/by-nc-sa/3.0/ 000125210 520__ $$aAlong this dissertation we review and understand the basic single-atom cavity QED models, as well as analyse their basic phenomenology and the different regimes they exhibit depending on the coupling strength between light and matter. We also establish that cavity QED implementations are many-body systems that are difficult to handle both analytically and numerically, and understand the polaron transform as a useful tool to treat these models semi-analytically. Furthermore, we identify the biased spin-boson model and study its properties via a generalisation of the polaron ansatz, comparing it with respect to the original. Further, we also validate our results against exact diagonalisation and draw some conclusions.<br /><br /> 000125210 521__ $$aGraduado en Física 000125210 540__ $$aDerechos regulados por licencia Creative Commons 000125210 700__ $$aZueco Láinez, David$$edir. 000125210 700__ $$aVitalla, Fernando Luis$$edir. 000125210 7102_ $$aUniversidad de Zaragoza$$bFísica de la Materia Condensada$$cFísica de la Materia Condensada 000125210 8560_ $$f760093@unizar.es 000125210 8564_ $$s711671$$uhttps://zaguan.unizar.es/record/125210/files/TAZ-TFG-2022-2880.pdf$$yMemoria (eng) 000125210 909CO $$ooai:zaguan.unizar.es:125210$$pdriver$$ptrabajos-fin-grado 000125210 950__ $$a 000125210 951__ $$adeposita:2023-03-21 000125210 980__ $$aTAZ$$bTFG$$cCIEN 000125210 999__ $$a20220627112150.CREATION_DATE