@article{WinklerFischerSchadeetal.2015,
  author    = {Winkler, Karol and Fischer, Julian and Schade, Anne and Amthor, Matthias and Dall, Robert and Geßler, Jonas and Emmerling, Monika and Ostrovskaya, Elena A. and Kamp, Martin and Schneider, Christian and H{\"o}fling, Sven},
  title     = {A polariton condensate in a photonic crystal potential landscape},
  series = {New Journal of Physics},
  volume    = {17},
  journal   = {New Journal of Physics},
  doi       = {10.1088/1367-2630/17/2/023001},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-125050},
  pages     = {023001},
  year      = {2015},
  abstract  = {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.},
  language  = {en}
}