Correlated Photons From Microcavity Polariton Parametric Scattering

Mathias Sassermann,Zoltán Vörös,Gregor Weihs,Wolfgang Werner Langbein

2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)（2017）

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摘要

Semiconductor microcavities can be engineered to produce strong coupling between photons and quantum well excitons leading to the formation of new eigenstates called polaritons. Due to their peculiar dispersion, enabling non-equilibrium Bose-Einstein condensation [1], and their straightforward experimental accessibility, microcavity polaritons have gained considerable interest in recent years. Polariton states can be selectively populated by choosing the excitation angle and the wavelength of the excitation laser. After a lifetime of a few picoseconds the polariton decays and a photon is emitted from the cavity, carrying the complete information on the underlying polariton state.

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关键词

k-space,phase-matching,ultranarrow exciton resonances,correlated light,second order correlation functions,time-correlated photon counting,polariton quantum correlations,phase space location,excitation density,Bogoliubov theory,2D Bose gases,parametric threshold,quantum statistics,nondegenerate optical parametric oscillator,nonclassical properties,photon statistics,figure-eight shaped curve,idler states,signal states,four-wave mixing process,excited polaritons,polariton-polariton parametric scattering,single device,multipartite entangled states,polariton-polariton interaction strength,momentum degree of freedom,polarization,photon pairs,nonclassical photon correlations,polariton-polariton interactions,polariton decays,excitation laser,excitation angle,polariton states,nonequilibrium Bose-Einstein condensation,eigenstates,quantum well excitons,semiconductor microcavities,microcavity polariton parametric scattering,correlated photons

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