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Lecture Danny O'Shea


04 June 2012 FWN-Building 5113.0202, Nijenborgh 4, 9747 AG, Groningen
Speaker: Dr Danny O'Shea
Affiliation: Atom Institute, Vienna University of Technology, Austria
Title: Cavity quantum electrodynamic experiments with an optical fiber-based bottle microresonator
Date: Mon Jun 4, 2012
Start: 11.00
Location: FWN-Building 5113.0202
Host: C.H. van der Wal
Telephone: +31 50 363 4974


Recently, whispering-gallery-mode optical microresonators - which store light in micron-sized structures via total internal reflection - have attracted considerable interest in the field of quantum optics due to their high potential for efficiently interfacing light and matter.  I describe our recent results demonstrating strong coupling between single rubidium atoms and a high-quality whispering-gallery-mode bottle microresonator. We study the spectral properties and photon statistics of the coupled atom-resonator system. Remarkably, single atoms have a very strong influence on the response of the system, being much stronger than current theoretical predictions. Results providing a tentative explanation of this behaviour are presented. Finally, we demonstrate the classical switching of single photons by single atoms between two separate optical fibers with 75% efficiency. I briefly discuss progress, challenges, and opportunities for operating an optical quantum switch for applications in quantum networks.

Last modified:22 October 2012 2.31 p.m.