Coherent coupling between radiofrequency, optical and acoustic waves in piezooptomechanical circuits

Title
Coherent coupling between radiofrequency, optical and acoustic waves in piezooptomechanical circuits
Authors
송진동Krishna C. BalramMarcelo I. DavancoKartik Srinivasan
Keywords
Coherent coupling; piezooptomechanical circuits; acoustic waves; optical waves
Issue Date
2016-05
Publisher
Nature photonics
Citation
VOL 10, NO 5, 346
Abstract
Optomechanical cavities have been studied for applications ranging from sensing to quantum information science. Here, we develop a platform for nanoscale cavity optomechanical circuits in which optomechanical cavities supporting co-localized 1,550 nm photons and 2.4 GHz phonons are combined with photonic and phononic waveguides. Working in GaAs facilitates manipulation of the localized mechanical mode either with a radiofrequency field through the piezo-electric effect, which produces acoustic waves that are routed and coupled to the optomechanical cavity by phononic-crystal waveguides, or optically through the strong photoelastic effect. Together with mechanical state preparation and sensitive readout, we use this to demonstrate an acoustic wave interference effect, similar to atomic coherent population trapping, in which radiofrequency-driven coherent mechanical motion is cancelled by optically driven motion. Manipulating cavity optomechanical systems with equal facility through both photonic and phononic channels enables new architectures for signal transduction between the optical, electrical and mechanical domains.
URI
http://pubs.kist.re.kr/handle/201004/65011
ISSN
1749-4885
Appears in Collections:
KIST Publication > Article
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