Hannover 2013 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 17: Quantum effects: Interference and correlations

Q 17.7: Vortrag

Montag, 18. März 2013, 18:15–18:30, F 342

Collective strong coupling in multimode cavity QED — •Arne Wickenbrock¹, Michael Hemmerling², Gordon R.M. Robb², Clive Emery³, and Ferruccio Renzoni¹ — ¹University College London, London, UK — ²University of Strathclyde, Glasgow, UK — ³Technische Universitaet Berlin, Berlin, Germany

We study an atom-cavity system in which the cavity has several degenerate transverse modes. Mode-resolved cavity transmission spectroscopy reveals well-resolved atom-cavity resonances for several cavity modes, a signature of collective strong coupling for the different modes. Furthermore, the experiment shows that the cavity modes are coupled via the atomic ensemble contained in the cavity. The experimental observations are supported by numerical analysis. The work paves the way to the use of interacting degenerate modes in cavity-based quantum information processing.