Hivet, R;
Cancellieri, E;
Boulier, T;
Ballarini, D;
Sanvitto, D;
Marchetti, FM;
Szymanska, MH;
... Bramati, A; + view all
(2014)
Interaction-shaped vortex-antivortex lattices in polariton fluids.
Physical Review B
, 89
(13)
, Article 134501. 10.1103/PhysRevB.89.134501.
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Abstract
Topological defects such as quantized vortices are one of the most striking manifestations of the superfluid nature of Bose-Einstein condensates and typical examples of quantum mechanical phenomena on a macroscopic scale. Here we demonstrate the formation of a lattice of vortex-antivortex pairs and study its properties in the nonlinear regime at high polariton-density where polariton-polariton interactions dominate the behavior of the system. In this work first we demonstrate that the array of vortex-antivortex pairs can be generated in a controllable way in terms of size of the array and in terms of size and shape of its fundamental unit cell. Then we demonstrate that polariton-polariton repulsion can strongly deform the lattice unit cell and determine the pattern distribution of the vortex-antivortex pairs, reaching a completely new behavior with respect to geometrically generated vortex lattices whose shape is determined only by the geometry of the system.
| Type: | Article |
|---|---|
| Title: | Interaction-shaped vortex-antivortex lattices in polariton fluids |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.89.134501 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.89.134501 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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-pp.ucl.ac.uk/id/eprint/10095386 |
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