Propagation and amplification dynamics of 1D polariton condensates

E. Wertz; A. Amo; D. D. Solnyshkov; L. Ferrier; T. C. H. Liew; D. Sanvitto; P. Senellart; I. Sagnes; A. Lemaître; A. V. Kavokin; G. Malpuech; J. Bloch

doi:10.1103/physrevlett.109.216404

arXiv · 1210.1079

Propagation and amplification dynamics of 1D polariton condensates

E. Wertz·A. Amo·D. D. Solnyshkov·L. Ferrier·T. C. H. Liew·D. Sanvitto·P. Senellart·I. Sagnes·A. Lemaître·A. V. Kavokin·G. Malpuech·J. Bloch

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Abstract

The dynamics of propagating polariton condensates in one-dimensional microcavities is investigated through time resolved experiments. We find a strong increase in the condensate intensity when it travels through the non-resonantly excited area. This amplification is shown to come from bosonic stimulated relaxation of reservoir excitons into the polariton condensate, allowing for the repopulation of the condensate through non-resonant pumping. Thus, we experimentally demonstrate a polariton amplifier with a large band width, opening the way towards the transport of polaritons with high densities over macroscopic distances.

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E. Wertz, A. Amo, D. D. Solnyshkov, L. Ferrier, T. C. H. Liew, D. Sanvitto, P. Senellart, I. Sagnes, A. Lemaître, A. V. Kavokin, G. Malpuech, J. Bloch. 2012-10-03. Propagation and amplification dynamics of 1D polariton condensates. https://doi.org/10.1103/physrevlett.109.216404

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