Low-temperature characteristics of an AlN/Diamond surface acoustic wave resonator
Open Access
- 1 December 2023
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 134 (21)
Abstract
Phonons confined in mechanical resonators can be coupled to a variety of quantum systems and are expected to be applied to hybrid quantum systems. Diamond surface acoustic wave (SAW) devices are capable of high efficiency in phonon interaction with color centers in diamond. The temperature dependence of the quality factor is crucial for inferring the governing mechanism of coupling efficiency between phonons and color centers in diamond. In this paper, we report on the temperature dependence of the quality factor of an AlN/diamond SAW device from room temperature to 5 K. The temperature dependence of the quality factor and resonant frequency suggests that the mechanism of SAW dissipation in the AlN/diamond SAW resonator at 5 GHz is the phonon–phonon scattering in the Akheiser regime and that further cooling can be expected to improve the quality factor. This result provides a crucial guideline for the future design of AlN/diamond SAW devices.Keywords
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Funding Information
- Japan Science and Technology Agency (JPMJMS2062)
- Japan Science and Technology Agency (JPMJCR1773)
- Ministry of Internal Affairs and Communications (JPMI00316)
- Japan Society for the Promotion of Science (20H05661, 20K20441)
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