title: 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.
authors.affiliation: Center for Theoretical Physics of Complex Systems, Institute for Basic Science, Daejeon, Republic of Korea.|Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea.
authors.forename: M
authors.initials: M
authors.lastname: Sun
authors.affiliation: Center for Theoretical Physics of Complex Systems, Institute for Basic Science, Daejeon, Republic of Korea.|Nonlinear Physics Centre, Research School of Physics and Engineering, The Australian National University, Canberra ACT 2601, Australia.|ITMO University, St. Petersburg 197101, Russia.
authors.forename: I G
authors.initials: IG
authors.lastname: Savenko
authors.affiliation: Institute of Theoretical Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland.
authors.forename: H
authors.initials: H
authors.lastname: Flayac
authors.affiliation: Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
authors.forename: T C H
authors.initials: TC
authors.lastname: Liew