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


Type
Article
Change log
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.

Description
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)