Berlin 2014 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 14: Ultracold atoms, ions and BEC II (with A)

Q 14.7: Talk

Monday, March 17, 2014, 15:30–15:45, BEBEL E34

Quantum many-body physics of interacting photons — •Sebnem Günes Söyler and Thomas Pohl — Max Planck Institute for the Physics of Complex Systems, Dresden, Germany

We study stationary light of massive photons emerging in a gas of interacting atoms via electromagnetically induced transparency. Path integral Monte Carlo simulations permit an approximation-free determination of the equilibrium phases of the resulting two-component system composed of photons and strongly interacting spin waves. Using this approach we identify a range of interesting quantum phases for varying coupling strengths between the two components, such as photonic superfluids that develop long-range diagonal order for certain parameters. An experimental realization via strongly interacting Rydberg gases will also be discussed.