Stationary coherence in semiconductor microcavities

Guillaume Cassabois (1) , Alc Triques (1) , D. Larousserie (1) , C. Delalande (1) , P. Roussignol (1) , P. Senellart-Mardon (2) , J. Bloch (2) , V. Thierry-Mieg (2) , R. Planel (2)

1 LPA - Laboratoire Pierre Aigrain
2 L2M - Laboratoire de Microstructures et de Microélectronique

We have investigated the coherent dynamics of a semiconductor microcavity by means of interferometric correlation measurements with fs resolution. We bring clear evidence of the resolution of a homogeneous polariton line in an inhomogeneously broadened exciton system. Moreover, we observe an unexpected stationary coherence up to 8 ps for the lower polariton branch close to resonance. Linear dispersion theory including an exciton asymmetric inhomogeneous broadening accounts for the coherent dynamics but does not predict the stationary coherence. [S0163-1829(99)51616-0].

Mots clés: QUANTUM-WELLS; EXCITONS; CAVITY; OSCILLATIONS; SCATTERING; POLARITONS; DYNAMICS; EMISSION

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Guillaume Cassabois, Alc Triques, D. Larousserie, C. Delalande, P. Roussignol, et al.. Stationary coherence in semiconductor microcavities. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 1999, 59, pp.10429-10432. ⟨10.1103/PhysRevB.59.R10429⟩. ⟨hal-00546764⟩