Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 46: Quantum Gases (Bosons) IV
Q 46.6: Vortrag
Donnerstag, 14. März 2019, 12:00–12:15, S HS 037 Informatik
Photon Condensates in Microstructured Trapping Potentials — •Christian Kurtscheid1, David Dung1, Erik Busley1, Julian Schmitt1,2, Frank Vewinger1, and Martin Weitz1 — 1Institut für Angewandte Physik, Universität Bonn, Wegelerstr. 8, D-53115 Bonn — 2present address: Department of Physics, University of Cambridge, Cambridge, United Kingdom
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 on the dye. In the present work, we present recent results on a delamination based technique realising static potentials for light within a supermirror optical microcavity, allowing for the creation of taylored potential landscapes for the optical quantum gas. We report on thermalization and condensation of photons in a created non-trivial potential consisting of a double well superimposed by a harmonic trapping potential, where the macroscopically occupied ground state of the system is a coherent symmetric superposition of states induced by the tunnel coupling between the double well sites.