Coupling and Level Repulsion in the Localized Regime: From Isolated to Quasiextended Modes
Abstract
We study the interaction of Anderson localized states in an open 1D random system by varying the internal structure of the sample. As the frequencies of two states come close, they are transformed into multiply peaked quasiextended modes. Level repulsion is observed experimentally and explained within a model of coupled resonators. The spectral and spatial evolution of the coupled modes is described in terms of the coupling coefficient and Q factors of resonators.
- Publication:
-
Physical Review Letters
- Pub Date:
- September 2008
- DOI:
- 10.1103/PhysRevLett.101.133901
- arXiv:
- arXiv:0806.0704
- Bibcode:
- 2008PhRvL.101m3901B
- Keywords:
-
- 42.25.Dd;
- 78.70.Gq;
- 78.90.+t;
- Wave propagation in random media;
- Microwave and radio-frequency interactions;
- Other topics in optical properties condensed matter spectroscopy and other interactions of particles and radiation with condensed matter;
- Condensed Matter - Disordered Systems and Neural Networks;
- Physics - Optics
- E-Print:
- 4 pages, 6 figures