Coupling n-level Atoms with l-modes of Quantised Light in a Resonator

We study the quantum phase transitions associated to the Hamiltonian of a system of n-level atoms interacting with l modes of electromagnetic radiation in a resonator. The quantum phase diagrams are determined in analytic form by means of a variational procedure where the test function is constructe...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 698; no. 1; pp. 12006 - 12014
Main Authors Castaños, O, Cordero, S, Nahmad-Achar, E, López-Peña, R
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2016
Subjects
Electromagnetic radiation
Phase diagrams
Phase transitions
Physics
Radiation
Resonators
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Summary:We study the quantum phase transitions associated to the Hamiltonian of a system of n-level atoms interacting with l modes of electromagnetic radiation in a resonator. The quantum phase diagrams are determined in analytic form by means of a variational procedure where the test function is constructed in terms of a tensorial product of coherent states describing the matter and the radiation field. We demonstrate that the system can be reduced to a set of Dicke models.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/698/1/012006