PT -symmetric phonon laser

Hui Jing, S. K. Özdemir, Xin You Lü, Jing Zhang, Lan Yang, Franco Nori

Research output: Contribution to journalArticle

241 Scopus citations


By exploiting recent developments associated with coupled microcavities, we introduce the concept of the PT-symmetric phonon laser with balanced gain and loss. This is accomplished by introducing gain to one of the microcavities such that it balances the passive loss of the other. In the vicinity of the gain-loss balance, a strong nonlinear relation emerges between the intracavity-photon intensity and the input power. This then leads to a giant enhancement of both optical pressure and mechanical gain, resulting in a highly efficient phonon-lasing action. These results provide a promising approach for manipulating optomechanical systems through PT-symmetric concepts. Potential applications range from enhancing mechanical cooling to designing phonon-laser amplifiers.

Original languageEnglish (US)
Article number053604
JournalPhysical Review Letters
Issue number5
StatePublished - Jul 30 2014


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Jing, H., Özdemir, S. K., Lü, X. Y., Zhang, J., Yang, L., & Nori, F. (2014). PT -symmetric phonon laser. Physical Review Letters, 113(5), [053604].