Unidirectional distributed acoustic reflection transducers for quantum applications

Dumur, É.; Satzinger, K. J.; Peairs, G. A.; Chou, Ming-Han; Bienfait, A.; Chang, H. -S.; Conner, C. R.; Grebel, J.; Povey, R. G.; Zhong, Y. P.; Cleland, A. N.

doi:10.1063/1.5099095

Unidirectional distributed acoustic reflection transducers for quantum applications

Journal Article · Wed Jun 05 00:00:00 EDT 2019 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.5099095· OSTI ID:1530395

^[1]; ^[2]; Peairs, G. A. ^[3]; Chou, Ming-Han ^[4]; Bienfait, A. ^[5]; ^[5]; ^[5]; Grebel, J. ^[5]; ^[4]; Zhong, Y. P. ^[5]; Cleland, A. N. ^[1]

Univ. of Chicago, IL (United States). Inst. for Molecular Engineering; Argonne National Lab. (ANL), Argonne, IL (United States). Inst. for Molecular Engineering and Materials Science Division
Univ. of Chicago, IL (United States). Inst. for Molecular Engineering; Univ. of California, Santa Barbara, CA (United States). Dept. of Physics; Google, Santa Barbara, CA (United States)
Univ. of Chicago, IL (United States). Inst. for Molecular Engineering; Univ. of California, Santa Barbara, CA (United States). Dept. of Physics
Univ. of Chicago, IL (United States). Inst. for Molecular Engineering, and Dept. of Physics
Univ. of Chicago, IL (United States). Inst. for Molecular Engineering

Recent significant advances in coupling superconducting qubits to acoustic wave resonators have led to demonstrations of quantum control of surface and bulk acoustic resonant modes as well as Wigner tomography of quantum states in these modes. These advances were achieved through the efficient coupling afforded by piezoelectric materials combined with GHz-frequency acoustic Fabry-Perot cavities. Quantum control of itinerant surface acoustic waves appears in reach but is challenging due to the limitations of conventional transducers in the appropriate gigahertz-frequency band. In particular, gigahertz-frequency unidirectional transducers would provide an important addition to the desired quantum toolbox, promising unit efficiency with directional control over the surface acoustic wave emission pattern. Here, we report the design, fabrication, and experimental characterization of unidirectional distributed acoustic reflection transducers demonstrating a high transduction frequency of 4.8GHz with a peak directivity larger than 25dB and a directivity greater than 15dB over a bandwidth of 17MHz. A numerical model reproduces the main features of the transducer response quite well, with ten adjustable parameters (most of which are constrained by geometric and physical considerations). Finally, this represents a significant step toward quantum control of itinerant quantum acoustic waves.

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Organization:: National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); US Army Research Laboratory (USARL); USDOE; USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1530395

Alternate ID(s):: OSTI ID: 1525510

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 114; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (10)

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Cited By (3)

Sound-driven single-electron transfer in a circuit of coupled quantum rails Takada, Shintaro; Edlbauer, Hermann; Lepage, Hugo V. Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-12514-w	journal	October 2019
Sound-driven single-electron transfer in a circuit of coupled quantum rails Takada, Shintaro; Edlbauer, Hermann; Lepage, Hugo V. Apollo - University of Cambridge Repository https://doi.org/10.17863/cam.58272	text	January 2019
Sound-driven single-electron transfer in a circuit of coupled quantum rails Takada, Shintaro; Edlbauer, Hermann; Lepage, Hugo V. arXiv https://doi.org/10.48550/arxiv.1903.00684	text	January 2019

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