Artigo Acesso aberto Revisado por pares

Multipartite Entanglement in a Microwave Frequency Comb

2023; American Physical Society; Volume: 130; Issue: 12 Linguagem: Inglês

10.1103/physrevlett.130.120601

ISSN

1092-0145

Autores

Shan W. Jolin, Gustav Andersson, J. C. Rivera Hernández, Ingrid Strandberg, Fernando Quijandría, José Aumentado, Riccardo Borgani, Mats O. Tholén, David B. Haviland,

Tópico(s)

Quantum Mechanics and Applications

Resumo

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.

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