A polariton condensate in a photonic crystal potential landscape
MetadataShow full item record
The possibility of investigating macroscopic coherent quantum states in polariton condensates and of engineering polariton landscapes in semiconductors has triggered interest in using polaritonic systems to simulate complex many-body phenomena. However, advanced experiments require superior trapping techniques that allow for the engineering of periodic and arbitrary potentials with strong on-site localization, clean condensate formation, and nearest-neighbor coupling. Here we establish a technology that meets these demands and enables strong, potentially tunable trapping without affecting the favorable polariton characteristics. The traps are based on a locally elongated microcavity which can be formed by standard lithography. We observe polariton condensation with non-resonant pumping in single traps and photonic crystal square lattice arrays. In the latter structures, we observe pronounced energy bands, complete band gaps, and spontaneous condensation at the M-point of the Brillouin zone.
Winkler , K , Fischer , J , Schade , A , Amthor , M , Dall , R , Geßler , J , Emmerling , M , Ostrovskaya , E A , Kamp , M , Schneider , C & Höfling , S 2015 , ' A polariton condensate in a photonic crystal potential landscape ' , New Journal of Physics , vol. 17 . https://doi.org/10.1088/1367-2630/17/2/023001
New Journal of Physics
©2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence (http://creativecommons.org/licenses/by/3.0). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
DescriptionThis work has been supported by the State of Bavaria and the Australian Research Council (ARC). The authors thank M D Fraser, N Y Kim, Y Yamamoto, and V D Kulakovskii for fruitful discussions. This publication was funded by the German Research Foundation (DFG) and the University of Wuerzburg in the funding programme Open Access Publishing.
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.