Influence of multi-exciton correlations on nonlinear polariton dynamics in semiconductor microcavities
Author(s)Wen, P.; Christmann, G.; Baumberg, J. J.; Nelson, Keith Adam
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Using two-dimensional spectroscopy, we resolve multi-polariton coherences in quantum wells embedded inside a semiconductor microcavity and elucidate how multi-exciton correlations mediate polariton nonlinear dynamics. We find that polariton correlation strengths depend on spectral overlap with the biexciton resonance and that up to at least four polaritons can be correlated, a higher-order correlation than observed to date among excitons in bare quantum wells. The high-order correlations can be attributed to coupling through the cavity mode, although the role of high-order Coulomb correlations cannot be excluded.
DepartmentMassachusetts Institute of Technology. Department of Chemistry
New Journal of Physics
Institute of Physics Publishing
Wen, P, G Christmann, J J Baumberg, and Keith A Nelson. “Influence of multi-exciton correlations on nonlinear polariton dynamics in semiconductor microcavities.” New Journal of Physics 15, no. 2 (February 1, 2013): 025005.
Final published version