Integrated phononic waveguides in diamond

Title

Integrated phononic waveguides in diamond

 Author

Ding, Sophie Weiyi (Harvard University)
Pingault, B.J. (TU Delft QID/Taminiau Lab; TU Delft Communication QuTech; TU Delft QuTech Advanced Research Centre; Kavli institute of nanoscience Delft; Harvard University)
Shao, Linbo (Harvard University; Virginia Tech)
Sinclair, Neil (Harvard University)
Machielse, Bartholomeus (Harvard University; AWS Center for Quantum Computing)
Chia, Cleaven (Harvard University)
Maity, Smarak (Harvard University)
Lončar, Marko (Harvard University)

Date

2024

 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.


 To reference this document use:

http://resolver.tudelft.nl/uuid:e6ecad30-4638-4430-a669-bfad8a13ae6b

 DOI

https://doi.org/10.1103/PhysRevApplied.21.014034

 ISSN

2331-7019

 Source

Physical Review Applied, 21 (1)

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2024 Sophie Weiyi Ding, B.J. Pingault, Linbo Shao, Neil Sinclair, Bartholomeus Machielse, Cleaven Chia, Smarak Maity, Marko Lončar
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