Unidirectional distributed acoustic reflection transducers for quantum applications
- 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:
- USDOE Laboratory Directed Research and Development (LDRD) Program; US Air Force Office of Scientific Research (AFOSR); US Army Research Laboratory (USARL); National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-06CH11357; FWP 50503; LDRD 2017-092-N0
- OSTI ID:
- 1530395
- Alternate ID(s):
- OSTI ID: 1525510
- Journal Information:
- Applied Physics Letters, Vol. 114, Issue 22; ISSN 0003-6951
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Sound-driven single-electron transfer in a circuit of coupled quantum rails
|
journal | October 2019 |
Sound-driven single-electron transfer in a circuit of coupled quantum rails
|
text | January 2019 |
Sound-driven single-electron transfer in a circuit of coupled quantum rails | text | January 2019 |
Similar Records
Simultaneous Brillouin and piezoelectric coupling to a high-frequency bulk acoustic resonator
High-sensitivity three-mode optomechanical transducer