Integrated phononic waveguides in diamond

Sophie Weiyi Ding, Benjamin Pingault, Linbo Shao, Neil Sinclair, Bartholomeus Machielse, Cleaven Chia, Smarak Maity, Marko Lončar

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)
36 Downloads (Pure)

Abstract

Efficient generation, guiding, and detection of phonons, or mechanical vibrations, are of interest in various fields, including radio-frequency communication, sensing, and quantum information. Diamond is a useful platform for phononics because of the presence of strain-sensitive spin qubits, and its high Young's modulus, which allows for low-loss gigahertz devices. We demonstrate a diamond phononic waveguide platform for generating, guiding, and detecting gigahertz-frequency surface acoustic wave (SAW) phonons. We generate SAWs using interdigital transducers integrated on AlN/diamond and observe SAW transmission at 4-5 GHz through both ridge and suspended waveguides, with wavelength-scale cross sections (approximately 1 m2) to maximize spin-phonon interaction. This work is a crucial step for developing acoustic components for quantum phononic circuits with strain-sensitive color centers in diamond.

Original languageEnglish
Article number014034
Number of pages10
JournalPhysical Review Applied
Volume21
Issue number1
DOIs
Publication statusPublished - 2024

Fingerprint

Dive into the research topics of 'Integrated phononic waveguides in diamond'. Together they form a unique fingerprint.

Cite this