Multipartite Entanglement in a Microwave Frequency Comb
Artikel i vetenskaplig tidskrift, 2023
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.
Författare
Shan W. Jolin
IQM Finland Oy
Kungliga Tekniska Högskolan (KTH)
Gustav Andersson
Pritzker School of Molecular Engineering
Chalmers, Mikroteknologi och nanovetenskap, Kvantteknologi
J. C.Rivera Hernández
Kungliga Tekniska Högskolan (KTH)
Ingrid Strandberg
Chalmers, Mikroteknologi och nanovetenskap, Kvantteknologi
Isaac Fernando Quijandria Diaz
Chalmers, Mikroteknologi och nanovetenskap, Tillämpad kvantfysik
Okinawa Institute of Science and Technology Graduate University
José Aumentado
National Institute of Standards and Technology (NIST)
Riccardo Borgani
Intermodulation Products AB
Kungliga Tekniska Högskolan (KTH)
Mats O. Tholén
Kungliga Tekniska Högskolan (KTH)
Intermodulation Products AB
D. Haviland
Kungliga Tekniska Högskolan (KTH)
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 130 12 120601Wallenberg Centre for Quantum Technology (WACQT)
Knut och Alice Wallenbergs Stiftelse (KAW 2017.0449, KAW2021.0009, KAW2022.0006), 2018-01-01 -- 2030-03-31.
Ämneskategorier (SSIF 2011)
Atom- och molekylfysik och optik
Signalbehandling
Annan elektroteknik och elektronik
DOI
10.1103/PhysRevLett.130.120601
PubMed
37027873