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Surface acoustic wave resonators in the quantum regime

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 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.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1103/PhysRevB.93.041411

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Publisher:
American Physical Society
Journal:
Physical Review B More from this journal
Volume:
93
Issue:
4
Publication date:
2016-01-15
DOI:
EISSN:
1550-235X
ISSN:
2469-9950


Keywords:
Pubs id:
pubs:598893
UUID:
uuid:56101052-2a3b-405b-92fb-3a634028e3f3
Local pid:
pubs:598893
Source identifiers:
598893
Deposit date:
2016-06-17

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