Multiple quantum wells for PT-symmetric phononic crystals
Mesoscale and Nanoscale Physics
2016-11-30 v1
Abstract
We demonstrate that the parity-time symmetry for sound is realized in the laser-pumped multiple-quantum-well structure. Breaking of the parity-time symmetry for the phonons with wave vectors corresponding to the Bragg condition makes the structure a highly-selective acoustic wave amplifier. Single-mode distributed feedback phonon lasing is predicted for structures with realistic parameters.
Cite
@article{arxiv.1606.09125,
title = {Multiple quantum wells for PT-symmetric phononic crystals},
author = {A. V. Poshakinskiy and A. N. Poddubny and A. Fainstein},
journal= {arXiv preprint arXiv:1606.09125},
year = {2016}
}
Comments
5 pages, 4 figures + supplement