A driven-dissipative spin chain model based on exciton-polariton condensates
Quantum Gases
2017-10-11 v1 Mesoscale and Nanoscale Physics
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.
Cite
@article{arxiv.1704.04811,
title = {A driven-dissipative spin chain model based on exciton-polariton condensates},
author = {H. Sigurdsson and A. J. Ramsay and H. Ohadi and Y. G. Rubo and T. C. H. Liew and J. J. Baumberg and I. A. Shelykh},
journal= {arXiv preprint arXiv:1704.04811},
year = {2017}
}