Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 44: Quantum Effects (Cavity QED)
Q 44.1: Group Report
Wednesday, March 7, 2018, 14:00–14:30, K 1.013
Collective atom–photon interactions in complex environments — •Stefan Yoshi Buhmann1,2, Roberta Palacino3, Saeideh Esfandiarpour1, and Robert Bennett1 — 1University of Freiburg, Freiburg, Germany — 2Freiburg Institute for Advanced Studies — 3University of Palermo
We review how macroscopic quantum electrodynamics in linear media can be used to describe the quantised electromagnetic field in arbitrary geometries and its interaction with one or several identical atoms.
For two emitters coherently sharing an excitation in free space, one recovers the well known phenomenon of a superradiant enhancement or suppression of decay, depending on the initial state. We show that this behaviour can be manipulated by a nearby metal surface in a generalised Purcell effect [1].
An even stronger impact of environments can be found in a cavity environment. We find that the strong coupling of two atoms with a single cavity mode can lead to collective Rabi oscillations which sensitively depend on the atomic positions with respect to the mode profile [2].
[1] R. Palacino, R. Passante, L. Rizzuto, P. Barcellona, S. Y. Buhmann, J. Phys. B 50, 154001 (2017).
[2] S. Esfandiarpour, R. Bennett, H. Safari, S. Y. Buhmann, arXiv:1708.05586 (2017).