Multivalley engineering in semiconductor microcavities.

ABSTRACT: 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 inplane 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.

SUBMITTER: Sun M 

PROVIDER: S-EPMC5377251 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature