TY - JOUR
T1 - Ultrafast exciton-polariton scattering towards the Dirac points
AU - Kovalev, V. M.
AU - Savenko, I. G.
AU - Iorsh, I. V.
PY - 2016/3/16
Y1 - 2016/3/16
N2 - Using the Feynman-Dyson diagram technique, we study nonlinear polariton-polariton scattering in a two-dimensional micropillar-based optical superlattice with hexagonal symmetry. We demonstrate that both the emerging polariton chirality and the loop Feynman diagrams up to infinite order should be strictly accounted for in the evaluation of the self-energy of the system. Further, we explicitly show that in such a design the time of polariton scattering towards the Dirac points can be drastically decreased which can be used, for instance, in engineering novel classes of polariton lasers with substantially reduced thresholds.
AB - Using the Feynman-Dyson diagram technique, we study nonlinear polariton-polariton scattering in a two-dimensional micropillar-based optical superlattice with hexagonal symmetry. We demonstrate that both the emerging polariton chirality and the loop Feynman diagrams up to infinite order should be strictly accounted for in the evaluation of the self-energy of the system. Further, we explicitly show that in such a design the time of polariton scattering towards the Dirac points can be drastically decreased which can be used, for instance, in engineering novel classes of polariton lasers with substantially reduced thresholds.
KW - exciton polaritons
KW - linear dispersion
KW - Feynman-Dyson technique
KW - Dirac point
KW - graphene materials
U2 - 10.1088/0953-8984/28/10/105301
DO - 10.1088/0953-8984/28/10/105301
M3 - Article
VL - 28
JO - Journal of physics: Condensed matter
JF - Journal of physics: Condensed matter
SN - 0953-8984
IS - 10
M1 - 105301
ER -