INVESTIGADORES
FAINSTEIN Alejandro
artículos
Título:
Multiple Quantum Wells for P T -Symmetric Phononic Crystals
Autor/es:
POSHAKINSKIY, A.V.; PODDUBNY, A.N.; FAINSTEIN, A.
Revista:
PHYSICAL REVIEW LETTERS
Editorial:
AMER PHYSICAL SOC
Referencias:
Año: 2016 vol. 117
ISSN:
0031-9007
Resumen:
We demonstrate that the parity-time symmetry for sound is realized in laser-pumped multiple-quantum-well structures. 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.
