Publications associated with Superconducting Quantum Devices

Surface acoustic wave resonators in the quantum regime

Physical Review B American Physical Society 93 (2016)

R Manenti, MJ Peterer, A Nersisyan, EB Magnusson, A Patterson, P Leek

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 10mK. We demonstrate an internal quality factor Qi approaching 0.5 million at 0.5GHz and show that Qi≥4.0×104 is achievable up to 4.4GHz. We show evidence for a polynomial dependence of propagation loss on frequency, as well as a weak drive power dependence of Qi 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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