Ultrafast exciton-polariton scattering towards the Dirac points

V. M. Kovalev; I. G. Savenko; I. V. Iorsh

doi:10.1088/0953-8984/28/10/105301

Ultrafast exciton-polariton scattering towards the Dirac points

V. M. Kovalev, I. G. Savenko, I. V. Iorsh

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

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.

Original language	English
Article number	105301
Journal	Journal of Physics Condensed Matter
Volume	28
Issue number	10
DOIs	https://doi.org/10.1088/0953-8984/28/10/105301
State	Published - 18 Feb 2016
Externally published	Yes

Keywords

Dirac point
Feynman-Dyson technique
exciton polaritons
graphene materials
linear dispersion

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10.1088/0953-8984/28/10/105301

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title = "Ultrafast exciton-polariton scattering towards the Dirac points",

abstract = "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.",

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AU - Kovalev, V. M.

AU - Savenko, I. G.

AU - Iorsh, I. V.

PY - 2016/2/18

Y1 - 2016/2/18

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 - Dirac point

KW - Feynman-Dyson technique

KW - exciton polaritons

KW - graphene materials

KW - linear dispersion

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JO - Journal of Physics Condensed Matter

JF - Journal of Physics Condensed Matter

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ER -

Ultrafast exciton-polariton scattering towards the Dirac points

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Keywords

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