Measurements of a quantum bulk acoustic resonator using a superconducting qubit
| Autor: | Kevin J. Satzinger, G. A. Peairs, Etienne Dumur, Hung-Shen Chang, Youpeng Zhong, Rhys Povey, Audrey Bienfait, Andrew Cleland, Ming-Han Chou, Joel Grebel, Christopher Conner |
|---|---|
| Přispěvatelé: | Pritzker School of Molecular Engineering, University of Chicago, Chicago IL 60637, USA, Department of Physics, University of Chicago, Chicago IL 60637, USA, Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont IL 60439, USA, Department of Physics, University of California, Santa Barbara CA 93106, USA |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Physics Quantum Physics Photon Physics and Astronomy (miscellaneous) business.industry Phonon FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Resonator [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Quantum state Qubit 0103 physical sciences Optoelectronics 0210 nano-technology business Ground state Quantum Physics (quant-ph) Quantum Quantum acoustics ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Applied Physics Letters Applied Physics Letters, American Institute of Physics, 2020, ⟨10.1063/5.0023827⟩ |
| ISSN: | 0003-6951 |
| DOI: | 10.1063/5.0023827⟩ |
| Popis: | Phonon modes at microwave frequencies can be cooled to their quantum ground state using conventional cryogenic refrigeration, providing a convenient way to study and manipulate quantum states at the single phonon level. Phonons are of particular interest because mechanical deformations can mediate interactions with a wide range of different quantum systems, including solid-state defects, superconducting qubits, as well as optical photons when using optomechanically-active constructs. Phonons thus hold promise for quantum-focused applications as diverse as sensing, information processing, and communication. Here, we describe a piezoelectric quantum bulk acoustic resonator (QBAR) with a 4.88 GHz resonant frequency that at cryogenic temperatures displays large electromechanical coupling strength combined with a high intrinsic mechanical quality factor $Q_i \approx 4.3 \times 10^4$. Using a recently-developed flip-chip technique, we couple this QBAR resonator to a superconducting qubit on a separate die and demonstrate quantum control of the mechanics in the coupled system. This approach promises a facile and flexible experimental approach to quantum acoustics and hybrid quantum systems. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|