Circuit quantum acoustodynamics with surface acoustic waves.

Circuit quantum acoustodynamics with surface acoustic waves.
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DOI:
10.1038/s41467-017-01063-9
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发表时间:
2017-10-17
影响因子:
16.6
通讯作者:
Leek PJ
Leek PJ
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Manenti R;Kockum AF;Patterson A;Behrle T;Rahamim J;Tancredi G;Nori F;Leek PJ

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机械谐振器量子器件的实验研究为宏观量子力学的研究开辟了新的领域。最近的研究表明,声表面波(SAW)可以压电耦合到超导量子比特,并限制在高质量的法布里-珀罗腔中的量子制度。在这里,我们提出了一个超导量子位耦合到SAW腔的设备的测量,实现了腔量子电动力学的表面声学版本。我们使用测量的AC斯塔克位移之间的两个系统,以确定耦合强度,这是符合理论模型。这种量子声动力学架构可用于开发新的量子声学设备,其中量子信息存储在捕获的片上声波包中,并且由于机械波慢105倍,因此以纯电磁信号不可能的方式进行操纵。在这项工作中,Manenti等人展示了一种设备的测量结果,其中可调transmon量子位被压电耦合到表面声波腔,实现了电路量子声动力学架构。这可能用于开发新的量子声学器件。
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. In this work, Manenti et al. present measurements of a device in which a tuneable transmon qubit is piezoelectrically coupled to a surface acoustic wave cavity, realising circuit quantum acoustodynamic architecture. This may be used to develop new quantum acoustic devices.
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