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Journal of Applied Mathematics and Statistical Applications | Volume: 1

August 23-24, 2018 | London, UK

Applied Physics

International Conference on

Polaritons in a nonideal array of microcavities with ultracold quantum dots

Vladimir Rumyantsev

A A Galkin Donetsk Institute for Physics and Engineering, Ukraine

he report is devoted to elucidation of the effect of

point-like defects on polariton dispersion in a 1D and 2D

microcavity array with embedded one-level quantum dots.

It is shown that the presence of vacancies in the microcavity

(resonator) and atomic (quantum dots) subsystems results

in a substantial renormalization of polariton spectrum and

thus in a considerable alteration of optical properties of the

structure. Introduction of defects leads to an increase in the

effectivemasses of polaritons andhence toadecreaseof their

group velocity. Our model is primarily based on the virtual

crystal approximation, which is often employed to examine

quasiparticle excitations in sufficiently simple disordered

superstructures. More complex systems usually require the

use of more sophisticated methods such as the (one- or

multinode) coherent potential approximation, the averaged

T-matrix method and their various modifications. The

obtained numerical results contribute to our understanding

of composite polaritonic structures and the prospects

of their utilization for construction of solid-state devices

with controllable propagation of electromagnetic waves.