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Updated: Aug 3, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Multipartite Entanglement in a Microwave Frequency Comb
Shan W Jolin1, Gustav Andersson2,3, J C Rivera Hernández1
1Department of Applied Physics, KTH Royal Institute of Technology, SE-106 91 Stockholm, Sweden.
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.
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