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Twist of generalized skyrmions and spin vortices in a polariton superfluid

Donati, S; Dominici, L; Dagvadorj, G; Ballarini, D; De Giorgi, M; Bramati, A; Gigli, G; ... Sanvitto, D; + view all (2016) Twist of generalized skyrmions and spin vortices in a polariton superfluid. Proceedings of the National Academy of Sciences of the United States of America , 113 (52) pp. 14926-14931. 10.1073/pnas.1610123114. Green open access

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Abstract

We study the spin vortices and skyrmions coherently imprinted into an exciton-polariton condensate on a planar semiconductor microcavity. We demonstrate that the presence of a polarization anisotropy can induce a complex dynamics of these structured topologies, leading to the twist of their circuitation on the Poincare sphere of polarizations. The theoretical description of the results carries the concept of generalized quantum vortices in two-component superfluids, which are conformal with polarization loops around an arbitrary axis in the pseudospin space.

Type: Article
Title: Twist of generalized skyrmions and spin vortices in a polariton superfluid
Open access status: An open access version is available from UCL Discovery
DOI: 10.1073/pnas.1610123114
Publisher version: http://dx.doi.org/10.1073/pnas.1610123114
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: quantum vortices, topology, Poincaré space, condensates, polaritons
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1535842
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