We consider exciton-photon coupling in semiconductor microcavities in which separate periodic potentials have been embedded for excitons and photons. We show theoretically that this system supports degenerate ground-states appearing at non-zero in-plane momenta, corresponding to multiple valleys in reciprocal space, which are further separated in polarization corresponding to a polarization-valley coupling in the system. Aside forming a basis for valleytronics, the multivalley dispersion is predicted to allow for spontaneous momentum symmetry breaking and two-mode squeezing under non-resonant and resonant excitation, respectively.
@article{arxiv.1610.05473,
title = {Multivalley engineering in semiconductor microcavities},
author = {M. Sun and I. G. Savenko and H. Flayac and T. C. H. Liew},
journal= {arXiv preprint arXiv:1610.05473},
year = {2017}
}
Comments
Manuscript: 7 pages, 7 figures, published in Scientific Reports 7, 45243 (2017)