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arXiv · 1407.7713

Spatial patterns of dissipative polariton solitons in semiconductor microcavities

J. K. Chana·M. Sich·F. Fras·A. V. Gorbach·D. V. Skryabin·E. Cancellieri·E. A. Cerda-Méndez·K. Biermann·R. Hey·P. V. Santos·M. S. Skolnick·D. N. Krizhanovskii
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Abstract

Semiconductor microcavities operating in the polaritonic regime are highly non-linear, high speed systems due to the unique half-light, half-matter nature of polaritons. Here, we report for the first time the observation of propagating multi-soliton polariton patterns consisting of multi-peak structures either along (x) or perpendicular to (y) the direction of propagation. Soliton arrays of up to 5 solitons are observed, with the number of solitons controlled by the size or power of the triggering laser pulse. The break-up along the x direction occurs due to interplay of bistability, negative effective mass and polariton-polariton scattering, while in the y direction the break-up results from nonlinear phase-dependent interactions of propagating fronts. We show the experimental results are in good agreement with numerical modelling. Our observations are a step towards ultrafast all-optical signal processing using sequences of solitons as bits of information.

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J. K. Chana, M. Sich, F. Fras, A. V. Gorbach, D. V. Skryabin, E. Cancellieri, E. A. Cerda-Méndez, K. Biermann, R. Hey, P. V. Santos, M. S. Skolnick, D. N. Krizhanovskii. 2014-07-29. Spatial patterns of dissipative polariton solitons in semiconductor microcavities. https://doi.org/10.1103/physrevlett.115.256401

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