Erlangen 2018 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 37: Quantum Gases (Bosons) IV
Q 37.3: Talk
Tuesday, March 6, 2018, 14:30–14:45, K 2.020
Photon Condensates in Microstructured Trapping Potentials — •Christian Kurtscheid1, David Dung1, Erik Busley1, Julian Schmitt2, Tobias Damm1, Frank Vewinger1, Jan Klärs3, and Martin Weitz1 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, D-53115 Bonn — 2present address: Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge, United Kingdom — 3present address: Faculty of Science and Technology, University of Twente, Horst- Meander 123, Enschede, The Netherlands
In earlier work, Bose-Einstein condensation of photons has been realized in a dye-filled optical microcavity at room temperature. The short mirror spacing of the curved mirror microcavity introduces a low-frequency cutoff, and thermal contact to the dye solution is achieved by subsequent absorption and re-emission processes. In the present work, we present recent results on a thermo-optic technique to generate variable potentials for light within a supermirror optical microcavity. The long photon lifetime allows for the thermalization of photons and the demonstration of a microscopic photon condensate with a critical photon number of 68. We observe effective photon interactions as well as the tunnel coupling between microsites. We also report on a delamination technique realising static potentials in the dye microcavity environment.