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arXiv · 1503.05783

Merging of vortices and antivortices in polariton superfluids

Emiliano Cancellieri·Thomas Boulier·Romain Hivet·Dario Ballarini·Daniele Sanvitto·Marzena Szymanska·Cristiano Ciuti·Elisabeth Giacobino·Albeerto Bramati
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Abstract

Quantised vortices are remarkable manifestations on a macroscopic scale of the coherent nature of quantum fluids, and the study of their properties is of fundamental importance for the understanding of this peculiar state of matter. Cavity-polaritons, due to their double light-matter nature, offer a unique controllable environment to investigate these properties. In this work we theoretically investigate the possibility to deterministically achieve the annihilation of a vortex with an antivortex through the increase of the polariton density in the region surrounding the vortices. Moreover we demonstrate that by means of this mechanism an array of vortex-antivortex pairs can be completely washed out.

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Emiliano Cancellieri, Thomas Boulier, Romain Hivet, Dario Ballarini, Daniele Sanvitto, Marzena Szymanska, Cristiano Ciuti, Elisabeth Giacobino, Albeerto Bramati. 2015-03-19. Merging of vortices and antivortices in polariton superfluids. https://doi.org/10.1103/physrevb.90.214518

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