title: Phonon lasing in an electromechanical resonator.
abstract: An electromechanical resonator harboring an atomlike spectrum of discrete mechanical vibrations, namely, phonon modes, has been developed. A purely mechanical three-mode system becomes available in the electromechanical atom in which the energy difference of the two higher modes is resonant with a long-lived lower mode. Our measurements reveal that even an incoherent input into the higher mode results in coherent emission in the lower mode that exhibits all the hallmarks of phonon lasing in a process that is reminiscent of Brillouin lasing.
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan.
authors.forename: I
authors.initials: I
authors.lastname: Mahboob
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nishiguchi
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Fujiwara
authors.affiliation: NTT Basic Research Laboratories, NTT Corporation, Atsugi-shi, Kanagawa 243-0198, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yamaguchi