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arXiv · 1510.04965

Surface acoustic wave resonators in the quantum regime

R. Manenti·M. J. Peterer·A. Nersisyan·E. B. Magnusson·A. Patterson·P. J. Leek
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Abstract

We present systematic measurements of the quality factors of surface acoustic wave (SAW) resonators on ST-X quartz in the gigahertz range at a temperature of $10 \, \textrm{mK}$. We demonstrate a internal quality factor $Q_\mathrm{i}$ approaching $0.5$ million at $0.5 \, \textrm{GHz}$ and show that $Q_\mathrm{i}\geq4.0\times10^4$ is achievable up to $4.4 \, \textrm{GHz}$. We show evidence for a polynomial dependence of propagation loss on frequency, as well as a weak drive power dependence of $Q_\mathrm{i}$ that saturates at low power, the latter being consistent with coupling to a bath of two-level systems. Our results indicate that SAW resonators are promising devices for integration with superconducting quantum circuits.

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R. Manenti, M. J. Peterer, A. Nersisyan, E. B. Magnusson, A. Patterson, P. J. Leek. 2015-10-16. Surface acoustic wave resonators in the quantum regime. https://doi.org/10.1103/physrevb.93.041411

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