Journal article

Incompressible Polaritons in a Flat Band.

  • Biondi M Institute for Theoretical Physics, ETH Zurich, 8093 Zürich, Switzerland.
  • van Nieuwenburg EP Institute for Theoretical Physics, ETH Zurich, 8093 Zürich, Switzerland.
  • Blatter G Institute for Theoretical Physics, ETH Zurich, 8093 Zürich, Switzerland.
  • Huber SD Institute for Theoretical Physics, ETH Zurich, 8093 Zürich, Switzerland.
  • Schmidt S Institute for Theoretical Physics, ETH Zurich, 8093 Zürich, Switzerland.
  • 2015-11-10
Published in:
  • Physical review letters. - 2015
English We study the interplay of geometric frustration and interactions in a nonequilibrium photonic lattice system exhibiting a polariton flat band as described by a variant of the Jaynes-Cummings-Hubbard model. We show how to engineer strong photonic correlations in such a driven, dissipative system by quenching the kinetic energy through frustration. This produces an incompressible state of photons characterized by short-ranged crystalline order with period doubling. The latter manifests itself in strong spatial correlations, i.e., on-site and nearest-neighbor antibunching combined with extended density-wave oscillations at larger distances. We propose a state-of-the-art circuit QED realization of our system, which is tunable in situ.
Language
  • English
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hybrid
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https://sonar.ch/global/documents/254067
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