Driven-dissipative spin chain model based on exciton-polariton condensates

H. Sigurdsson*, A. J. Ramsay, H. Ohadi, Y. G. Rubo, T. C.H. Liew, J. J. Baumberg, I. A. Shelykh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

An infinite chain of driven-dissipative condensate spins with uniform nearest-neighbor coherent coupling is solved analytically and investigated numerically. Above a critical occupation threshold the condensates undergo spontaneous spin bifurcation (becoming magnetized) forming a binary chain of spin-up or spin-down states. Minimization of the bifurcation threshold determines the magnetic order as a function of the coupling strength. This allows control of multiple magnetic orders via adiabatic (slow ramping of) pumping. In addition to ferromagnetic and antiferromagnetic ordered states we show the formation of a paired-spin ordered state |···↑↑↓↓···⟩ as a consequence of the phase degree of freedom between condensates.
Original languageEnglish
Article number155403
Number of pages9
JournalPhysical Review. B, Condensed matter and materials physics
Volume96
Issue number15
Early online date2 Oct 2017
DOIs
Publication statusPublished - 15 Oct 2017

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