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Multipartite Entanglement in a Microwave Frequency Comb
Jolin, Shan W.; Andersson, Gustav; Rivera Hernández, J. C.; Strandberg, Ingrid; Quijandría, Fernando; Aumentado, José; Borgani, Riccardo; Tholén, Mats O.; Haviland, David B.
2023
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Abstract

Significant progress has been made with multipartite entanglement of discrete qubits, but continuous variable systems may provide a more scalable path toward entanglement of large ensembles. We demonstrate multipartite entanglement in a microwave frequency comb generated by a Josephson parametric amplifier subject to a bichromatic pump. We find 64 correlated modes in the transmission line using a multifrequency digital signal processing platform. Full inseparability is verified in a subset of seven modes. Our method can be expanded to generate even more entangled modes in the near future.

Details

Title
Multipartite Entanglement in a Microwave Frequency Comb
Author
Jolin, Shan W. : KTH Royal Institute of Technology : (https://orcid.org/0000-0003-3950-7303)
Andersson, Gustav : University of Chicago : (https://orcid.org/0000-0003-1442-2573)
Rivera Hernández, J. C. : KTH Royal Institute of Technology : (https://orcid.org/0000-0001-8004-9303)
Strandberg, Ingrid : Chalmers University of Technology : (https://orcid.org/0000-0002-3238-8164)
Quijandría, Fernando : Chalmers University of Technology : (https://orcid.org/0000-0002-2355-0449)
Aumentado, José : National Institute of Standard and Technology : (https://orcid.org/0000-0001-5581-1466)
Borgani, Riccardo : KTH Royal Institute of Technology : (https://orcid.org/0000-0001-8199-5510)
Tholén, Mats O. : KTH Royal Institute of Technology
Haviland, David B. : KTH Royal Institute of Technology
Content Type
Article
Published in
Physical Review Letters
Identifier(s)
DOI: https://doi.org/10.1103/PhysRevLett.130.120601
Funding Information
Knut and Alice Wallenberg Foundation
Publication Date
2023-03-23
Language
English
Copyright Statement

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Licensing
Record Appears in
Pritzker School of Molecular Engineering
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Record Created
2024-12-13

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