Squeezing and multimode entanglement of surface acoustic wave phonons

Exploiting multiple modes in a quantum acoustic device could enable applications in quantum information in a hardware-efficient setup, including quantum simulation in a synthetic dimension and continuous-variable quantum computing with cluster states.We develop a multimode surface acoustic wave (SAW...

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Bibliographic Details
Published inarXiv.org
Main Authors Andersson, Gustav, Jolin, Shan W, Scigliuzzo, Marco, Borgani, Riccardo, Tholén, Mats O, Rivera Hernández, J C, Shumeiko, Vitaly, Haviland, David B, Delsing, Per
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 11.02.2022
Subjects
Acoustics
Bragg reflectors
Clusters
Compressing
Computer simulation
Continuity (mathematics)
Coupling
Physics - Quantum Physics
Quantum computing
Quantum phenomena
Resonators
Superconducting quantum interference devices
Surface acoustic waves
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Summary:Exploiting multiple modes in a quantum acoustic device could enable applications in quantum information in a hardware-efficient setup, including quantum simulation in a synthetic dimension and continuous-variable quantum computing with cluster states.We develop a multimode surface acoustic wave (SAW) resonator with a superconducting quantum interference device (SQUID) integrated in one of the Bragg reflectors. The interaction with the SQUID-shunted mirror gives rise to coupling between the more than 20 accessible resonator modes. We exploit this coupling to demonstrate two-mode squeezing of SAW phonons, as well as four-mode multipartite entanglement. Our results open avenues for continuous-variable quantum computing in a compact hybrid quantum system.
ISSN:2331-8422
DOI:10.48550/arxiv.2007.05826