Microscopic theory of equilibrium polariton condensates

Article

关键词: BOSE-EINSTEIN CONDENSATION;    EXCITON-POLARITONS;    SEMICONDUCTOR MICROCAVITIES;    STATE;   

DOI  :  10.1103/PhysRevB.94.235302

来源: SCIE

【 摘 要 】

We present a microscopic theory of the equilibrium polariton condensate state of a semiconductor quantum well in a planar optical cavity. The theory accounts for the adjustment of matter excitations to the presence of a coherent photon field, predicts effective polariton-polariton interaction strengths that are weaker and condensate exciton fractions that are smaller than in the commonly employed exciton-photon model, and yields effective Rabi coupling strengths that depend on the detuning of the cavity-photon energy relative to the bare exciton energy. The dressed quasiparticle bands that appear naturally in the theory provide a mechanism for electrical manipulation of polariton condensates.

【 授权许可】

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