Integrated phononic waveguide on thin-film lithium niobate on diamond
Abstract
We demonstrate wavelength-scale phononic waveguides formed by transfer-printed thin-film lithium niobate (LN) on bulk diamond, a material stack that combines the strong piezoelectricity of LN with the high acoustic velocity and color-center compatibility of diamond. We characterize a delay line based on a 100 μm long phononic waveguide at room and cryogenic temperatures. The total insertion loss through the device at 4 K is −5.8 dB, corresponding to a >50 % transducer efficiency, at a frequency of 2.8 GHz. Our work represents a step toward phonon-mediated hybrid quantum systems consisting of strain-sensitive color centers in diamond.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (9)
Sultan Malik
Felix M. Mayor
Wentao Jiang
School of Physical Science and Technology, Shanghai Key Laboratory of High-Resolution Electron Microscopy, State Key Laboratory of Advanced Medical Materials and Devices
Hyunseok Oh
Department of Physics, University of California 2 , Santa Barbara, California 93106,
Carl Padgett
Department of Physics, University of California 2 , Santa Barbara, California 93106,
Viraj Dharod
Department of Physics, University of California 2 , Santa Barbara, California 93106,
Jayameenakshi Venkatraman
Department of Physics, University of California 2 , Santa Barbara, California 93106,
Ania C. Bleszynski Jayich
Amir H. Safavi-Naeini