Multiple Quantum Wells for P T -Symmetric Phononic Crystals

A. V. Poshakinskiy, A. N. Poddubny, A. Fainstein

Research output: Contribution to journalArticlepeer-review


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.

Original languageEnglish
Article number224302
JournalPhysical review letters
Issue number22
StatePublished - 23 Nov 2016
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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