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Circuit quantum acoustodynamics with surface acoustic waves

zqyin 添加于 2017-3-14 11:24 | 1267 次阅读 | 0 个评论

作者
Manenti R, Kockum AF, Patterson A, Behrle T, Rahamim J, Tancredi G, Nori F, Leek PJ
摘要
The experimental investigation of quantum devices incorporating mechanical resonators has opened up new frontiers in the study of quantum mechanics at a macroscopic level$^{1,2}$. Superconducting microwave circuits have proven to be a powerful platform for the realisation of such quantum devices, both in cavity optomechanics$^{3,4}$, and circuit quantum electro-dynamics (QED)$^{5,6}$. While most experiments to date have involved localised nanomechanical resonators, it has recently been shown that propagating surface acoustic waves (SAWs) can be piezoelectrically coupled to superconducting qubits$^{7,8}$, and confined in high-quality Fabry-Perot cavities up to microwave frequencies in the quantum regime$^{9}$, indicating the possibility of realising coherent exchange of quantum information between the two systems. Here we present measurements of a device in which a superconducting qubit is embedded in, and interacts with, the acoustic field of a Fabry-Perot SAW cavity on quartz, realising a surface acoustic version of cavity quantum electrodynamics. This quantum acoustodynamics (QAD) architecture may be used to develop new quantum acoustic devices in which quantum information is stored in trapped on-chip surface acoustic wavepackets, and manipulated in ways that are impossible with purely electromagnetic signals, due to the $10^{5}$ times slower speed of travel of the mechanical waves.
详细资料
- 关键词: quant-ph
- 文献种类:手稿
- 期卷页: 2017年
- 日期: 2017-3-14
- 发布方式: arXiv e-prints
- 备注:http://arxiv.org/abs/1703.04495v1
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