期刊
NATURE COMMUNICATIONS
卷 8, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41467-017-01063-9
关键词
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资金
- UK Engineering and Physical Sciences Research Council [EP/J001821/1, EP/J013501/1]
- CREST
- John Templeton Foundation
- Japan Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [17F15750, 15H02118] Funding Source: KAKEN
- Engineering and Physical Sciences Research Council [EP/J001821/1, EP/J013501/1] Funding Source: researchfish
- EPSRC [EP/J013501/1, EP/J001821/1] Funding Source: UKRI
The experimental investigation of quantum devices incorporating mechanical resonators has opened up new frontiers in the study of quantum mechanics at a macroscopic level. It has recently been shown that surface acoustic waves (SAWs) can be piezoelectrically coupled to superconducting qubits, and confined in high-quality Fabry-Perot cavities in the quantum regime. Here we present measurements of a device in which a superconducting qubit is coupled to a SAW cavity, realising a surface acoustic version of cavity quantum electrodynamics. We use measurements of the AC Stark shift between the two systems to determine the coupling strength, which is in agreement with a theoretical model. This quantum acoustodynamics architecture may be used to develop new quantum acoustic devices in which quantum information is stored in trapped on-chip acoustic wavepackets, and manipulated in ways that are impossible with purely electromagnetic signals, due to the 105 times slower mechanical waves.
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