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Interactions and scattering of quantum vortices in a polariton fluid

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Autor: Dominici, Lorenzo
Carretero-González, Ricardo
Gianfrate, Antonio
Cuevas-Maraver, Jesús
Rodrigues, Augusto S.
Frantzeskakis, Dimitri J.
Lerario, Giovanni
Ballarini, Dario
Giorgi, Milena De
Gigli, Giuseppe
Kevrekidis, Panayotis G.
Sanvitto, Daniele
Departamento: Universidad de Sevilla. Departamento de Física Aplicada I
Fecha: 2018
Publicado en: Nature Communications, 9, 1467-1-1467-10.
Tipo de documento: Artículo
Resumen: Quantum vortices, the quantized version of classical vortices, play a prominent role in superfluid and superconductor phase transitions. However, their exploration at a particle level in open quantum systems has gained considerable attention only recently. Here we study vortex pair interactions in a resonant polariton fluid created in a solid-state microcavity. By tracking the vortices on picosecond time scales, we reveal the role of nonlinearity, as well as of density and phase gradients, in driving their rotational dynamics. Such effects are also responsible for the split of composite spin–vortex molecules into elementary half-vortices, when seeding opposite vorticity between the two spinorial components. Remarkably, we also observe that vortices placed in close proximity experience a pull–push scenario leading to unusual scattering-like events that can be described by a tunable effective potential. Understanding vortex interactions can be useful in quantum hydrodynamics and in the de...
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Cita: Dominici, L., Carretero-González, R., Gianfrate, A., Cuevas-Maraver, J., Rodrigues, A.S., Frantzeskakis, D.,...,Sanvitto, D. (2018). Interactions and scattering of quantum vortices in a polariton fluid. Nature Communications, 9, 1467-1-1467-10.
Tamaño: 4.755Mb
Formato: PDF

URI: https://hdl.handle.net/11441/73310

DOI: 10.1038/s41467-018-03736-5

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