Quantum acoustics with superconducting qubits

Mechanical objects have important practical applications in the fields of quantum information and metrology as quantum memories or transducers for measuring and connecting different types of quantum systems. The field of electromechanics is in pursuit of a robust and highly coherent device that coup...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2017-10, Vol.358 (6360), p.199-202
Main Authors: Chu, Yiwen, Kharel, Prashanta, Renninger, William H., Burkhart, Luke D., Frunzio, Luigi, Rakich, Peter T., Schoelkopf, Robert J.
Format: Article
Language:English
Subjects:
Access control
Acoustic coupling
Acoustics
Control methods
Electromechanics
Fabrication
Hybrid systems
Object motion
Phonons
Piezoelectricity
Platforms
Quantum mechanics
Quantum phenomena
Quantum theory
Qubits (quantum computing)
Stability
Superconductivity
Transducers
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Summary:Mechanical objects have important practical applications in the fields of quantum information and metrology as quantum memories or transducers for measuring and connecting different types of quantum systems. The field of electromechanics is in pursuit of a robust and highly coherent device that couples motion to nonlinear quantum objects such as superconducting qubits. Here, we experimentally demonstrate a high-frequency bulk acoustic wave resonator that is strongly coupled to a superconducting qubit using piezoelectric transduction with a cooperativity of 260. We measure qubit and mechanical coherence times on the order of 10 microseconds. Our device requires only simple fabrication methods and provides controllable access to a multitude of phonon modes. We demonstrate quantum control and measurement on gigahertz phonons at the single-quantum level.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.aao1511