Show simple item record

dc.contributor.authorCaputo, Davide
dc.contributor.authorBallarini, Dario
dc.contributor.authorDagvadorj, Galbadrakh
dc.contributor.authorSanchez Munoz, Carlos
dc.contributor.authorDe Giorgi, Milena
dc.contributor.authorDominici, Lorenzo
dc.contributor.authorWest, Kenneth
dc.contributor.authorPfeiffer, Loren N.
dc.contributor.authorGigli, Giuseppe
dc.contributor.authorLaussy, Fabrice P.
dc.contributor.authorSzymanska, Marzena H.
dc.contributor.authorSanvitto, Daniele
dc.date.accessioned2018-09-25T16:22:41Z
dc.date.available2018-09-25T16:22:41Z
dc.date.issued2017-12-04
dc.identifier.citationCaputo D., Ballarini D., Dagvadorj G., Sánchez Muñoz C., De Giorgi M., Dominici L., West K., Pfeiffer LN., Gigli G., Laussy FP., Szymańska MH., Sanvitto D. (2018) Topological order and equilibrium in polariton condensates, Nature Materials, 17(2) pp. 145-151. doi: 10.1038/nmat5039
dc.identifier.issn1476-1122
dc.identifier.doi10.1038/nmat5039
dc.identifier.urihttp://hdl.handle.net/2436/621717
dc.descriptionThis is an accepted manuscript of an article published by Nature publishing group in Nature Materials on 04/12/2017 available online: https://doi.org/10.1038/nmat5039 The accepted version of the publication may differ from the final published version.en
dc.description.abstractWe report the observation of the Berezinskii-Kosterlitz-Thouless transition for a 2D gas of exciton-polaritons, and through the joint measurement of the first-order coherence both in space and time we bring compelling evidence of a thermodynamic equilibrium phase transition in an otherwise open driven/dissipative system. This is made possible thanks to long polariton lifetimes in high-quality samples with small disorder and in a reservoir-free region far away from the excitation spot, that allow topological ordering to prevail. The observed quasi-ordered phase, characteristic for an equilibrium 2D bosonic gas, with a decay of coherence in both spatial and temporal domains with the same algebraic exponent, is reproduced with numerical solutions of stochastic dynamics, proving that the mechanism of pairing of the topological defects (vortices) is responsible for the transition to the algebraic order. Finally, measurements in the weak-coupling regime confirm that polariton condensates are fundamentally different from photon lasers and constitute genuine quantum degenerate macroscopic states.
dc.formatapplication/PDF
dc.language.isoen
dc.publisherNature publishing group
dc.relation.urlhttps://www.nature.com/articles/nmat5039
dc.subjectpolaritons
dc.subjectBEC
dc.titleTopological order and thermal equilibrium in polariton condensates
dc.typeJournal article
dc.identifier.journalNature Materials
dc.identifier.orcidhttps://orcid.org/0000-0002-1070-7128
dc.date.accepted2017-10-24
rioxxterms.funderUniversity of Wolverhampton
rioxxterms.identifier.projectUOW25092018FL4
rioxxterms.versionAM
rioxxterms.licenseref.urihttps://creativecommons.org/licenses/by/4.0/
rioxxterms.licenseref.startdate2017-12-04
dc.source.volume17
dc.source.beginpage145
dc.source.endpage151
refterms.dateFCD2018-09-25T16:22:41Z
refterms.versionFCDAM
refterms.dateFOA2018-10-25T13:18:30Z


Files in this item

Thumbnail
Name:
1610.05737.pdf
Size:
5.419Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record

https://creativecommons.org/licenses/by/4.0/
Except where otherwise noted, this item's license is described as https://creativecommons.org/licenses/by/4.0/