Quality factors and dynamical tunneling in annular microcavities

Details Quality factors and dynamical tunneling in annular microcavities Quality factors and dynamical tunneling in annular microcavities

2009-03-05

arxiv.org/abs/0903.0974v2

Phys. Rev. A 79, 063804 (2009)

Physics

Optics

7 pages, 5 figures

Scientific paper

10.1103/PhysRevA.79.063804

The key characteristic of an optical mode in a microcavity is its quality factor describing the optical losses. The numerical computation of this quantity can be very demanding for present-day devices. Here we show for a certain class of whispering-gallery cavities that the quality factor is related to dynamical tunneling, a phenomenon studied in the field of quantum chaos. We extend a recently developed approach for determining dynamical tunneling rates to open cavities. This allows us to derive an analytical formula for the quality factor which is in very good agreement with full solutions of Maxwell's equations.

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