Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 43: Poster II

Q 43.48: Poster

Mittwoch, 20. März 2013, 16:00–18:30, Empore Lichthof

Absorption and emission of a NV center coupled to an optical cavity — •Ralf Betzholz, Marc Bienert, and Giovanna Morigi — Theoretische Physik, Universität des Saarlandes, D-66123, Germany

We study a nitrogen vacancy center in a diamond crystal coupled to a single mode optical cavity. In particular the interaction of the electronic degree of freedom to bulk acoustic phonons is investigated. Starting from a Hamiltonian that includes the Jaynes-Cummings interaction and the Spin-Boson model a Master equation is derived that treats the spin-phonon interaction in a non-Markovian way. In order to model the absorption and emission spectra the population of the ground state and the excited state are calculated. In the calculations different forms of the spectral function, which represents the coupling of the excited state to the phonon modes, are taken into account. Furthermore, the influence of the cavity is investigated and the dependence of the absorption and emission behaviour on the temperature is studied.