eprintid: 1467713 rev_number: 26 eprint_status: archive userid: 608 dir: disk0/01/46/77/13 datestamp: 2015-04-29 16:26:16 lastmod: 2021-10-05 00:23:07 status_changed: 2016-04-15 14:09:29 type: article metadata_visibility: show item_issues_count: 0 creators_name: Cancellieri, E creators_name: Boulier, T creators_name: Hivet, R creators_name: Ballarini, D creators_name: Sanvitto, D creators_name: Szymanska, MH creators_name: Ciuti, C creators_name: Giacobino, E creators_name: Bramati, A title: Merging of vortices and antivortices in polariton superfluids ispublished: pub divisions: UCL divisions: B04 divisions: C06 divisions: F60 note: Copyright © 2014 American Physical Society. abstract: Quantized 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 paper we theoretically investigate the possibility to deterministically achieve the annihilation of a vortex with an antivortex through an 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. date: 2014-12-01 official_url: http://dx.doi.org/10.1103/PhysRevB.90.214518 vfaculties: VMPS oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green verified: verified_manual elements_source: WoS-Lite elements_id: 1006423 doi: 10.1103/PhysRevB.90.214518 lyricists_name: Szymanska, Marzena lyricists_id: MHSZY35 full_text_status: public publication: Physical Review B volume: 90 number: 21 article_number: 214518 issn: 1098-0121 citation: Cancellieri, E; Boulier, T; Hivet, R; Ballarini, D; Sanvitto, D; Szymanska, MH; Ciuti, C; ... Bramati, A; + view all <#> Cancellieri, E; Boulier, T; Hivet, R; Ballarini, D; Sanvitto, D; Szymanska, MH; Ciuti, C; Giacobino, E; Bramati, A; - view fewer <#> (2014) Merging of vortices and antivortices in polariton superfluids. Physical Review B , 90 (21) , Article 214518. 10.1103/PhysRevB.90.214518 <https://doi.org/10.1103/PhysRevB.90.214518>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1467713/1/Merging%20of%20vortices%20and%20antivortices%20in%20polariton%20superfluids.pdf