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

Accepted version
Peer-reviewed

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Type

Article

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Authors

Sigurdsson, H 
Ramsay, AJ 
Rubo, YG 
Liew, TCH 

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 anti-ferromagnetic ordered states we show the formation of a paired-spin ordered state |⋯↑↑↓↓… as a consequence of the phase degree of freedom between condensates.

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Keywords

cond-mat.quant-gas, cond-mat.quant-gas, cond-mat.mes-hall

Journal Title

Physical Review B

Conference Name

Journal ISSN

2469-9950
2469-9969

Volume Title

96

Publisher

American Physical Society (APS)
Sponsorship
European Research Council (320503)
Engineering and Physical Sciences Research Council (EP/L027151/1)