Spin Order and Phase Transitions in Chains of Polariton Condensates
Published version
Peer-reviewed
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Repository DOI
Type
Article
Change log
Authors
Ohadi, Hamid https://orcid.org/0000-0001-6418-111X
Ramsay, AJ
Sigurdsson, H
del Valle-Inclan Redondo, Y
Tsintzos, SI
Abstract
We demonstrate that multiply coupled spinor polariton condensates can be optically tuned through a sequence of spin-ordered phases by changing the coupling strength between nearest neighbors. For closed four-condensate chains these phases span from ferromagnetic (FM) to antiferromagnetic (AFM), separated by an unexpected crossover phase. This crossover phase is composed of alternating FM-AFM bonds. For larger eight-condensate chains, we show the critical role of spatial inhomogeneities and demonstrate a scheme to overcome them and prepare any desired spin state. Our observations thus demonstrate a fully controllable nonequilibrium spin lattice.
Description
Keywords
cond-mat.mes-hall, cond-mat.mes-hall, cond-mat.other
Journal Title
Physical Review Letters
Conference Name
Journal ISSN
0031-9007
1079-7114
1079-7114
Volume Title
119
Publisher
American Physical Society
Publisher DOI
Sponsorship
Engineering and Physical Sciences Research Council (EP/L027151/1)
Leverhulme Trust (VP1-2013-011)
European Research Council (320503)
European Commission (289968)
Engineering and Physical Sciences Research Council (EP/G060649/1)
Leverhulme Trust (VP1-2013-011)
European Research Council (320503)
European Commission (289968)
Engineering and Physical Sciences Research Council (EP/G060649/1)
We acknowledge Grants No. EPSRC EP/L027151/1, No. EU INDEX 289968, No. ERC “POLAFLOW” Starting Grant, ERC LINASS 320503, Spanish MEC (MAT2008- 01555), Mexican CONACYT 251808, Leverhulme Trust Grant No. VP1-2013-011 and Fundación La Caixa. H. S. and I. S. acknowledge support by the Research Fund of the University of Iceland, The Icelandic Research Fund, Grant No. 163082-051. T. L. was supported by the MOE AcRF Tier 1 Grant No. 2016-T1-001-084. P. S. acknowledges financial support from the Stavros Niarchos Foundation, “ARCHERS” project.