1207.6336 (Rick Lytel et al.)

The influence of geometry and topology of quantum graphs on their
nonlinear-optical properties    [PDF]

Rick Lytel, Shoresh Shafei, Julian H. Smith, Mark G. Kuzyk

We analyze the nonlinear optics of quasi one-dimensional quantum graphs and manipulate their topology and geometry to generate for the first time nonlinearities in a simple system approaching the fundamental limits. Changes in geometry result in smooth variations of the nonlinearities. Topological changes between geometrically-similar systems cause profound changes in the nonlinear susceptibilities that include a discontinuity due to abrupt changes in the boundary conditions. This work may inform the design of new molecules or nano-scale structures for nonlinear optics.

View original: http://arxiv.org/abs/1207.6336