Berlin 2012 – scientific programme

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PV: Plenarvorträge

PV 6: PV VI

PV 6.1: Plenary Talk

Tuesday, March 27, 2012, 08:30–09:15, H 0105

Dynamical condensation of exciton-polaritons — •Yoshihisa Yamamoto — E. L. Ginzton Laboratory, Stanford University, Stanford, CA 94305, U.S.A. — National Institute of Informatics, 2-1-2 Hitotsubashi, Chiyoda-ku, Tokyo 101-8430, Japan

An exciton-polariton is an elementary excitation in semiconductors, consisting of quantum well excitons and microcavity photons. Because of its extremely small effective mass and short lifetime, the exciton-polaritons feature unique many-body effects, which are distinct from non-equilibrium photon lasers and equilibrium atomic BEC. In this talk, we will review the recent experimental studies on the dynamical condensation of exciton-polaritons. The specific topics to be discussed include the quantized vortex-antivortex pair and Berezinskii-Kosterlitz-Thouless (BKT) phase transition, the electron-hole BCS crossover, the Bogoliubov excitation spectrum and the higher orbital orders in various 2D lattice structures.