Spin Order and Phase Transitions in Chains of Polariton Condensates

Spin Order and Phase Transitions in Chains of Polariton Condensates

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), sepa...

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Bibliographic Details
Main Authors: Ohadi, H., Ramsay, A. J., Sigurdsson, H., del Valle-Inclan Redondo, Y., Tsintzos, S. I., Hatzopoulos, Z., Liew, Timothy Chi Hin, Shelykh, I. A., Rubo, Y. G., Savvidis, P. G., Baumberg, J. J.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
Subjects:
Polariton condensates
Spin lattices
Online Access:https://hdl.handle.net/10356/85490
http://hdl.handle.net/10220/43718
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Institution: Nanyang Technological University
Language: English
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Summary: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.

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