| 1. |
- Chang, C. W. Sandbo, et al.
(författare)
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Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
- 2018
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Ingår i: Physical Review Applied. - 2331-7019. ; 10:4
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Tidskriftsartikel (refereegranskat)abstract
- We demonstrate the generation of multimode entangled states of propagating microwaves. The entangled states are generated by our parametrically pumping a multimode superconducting cavity. By combining different pump frequencies, applied simultaneously to the device, we can produce different entanglement structures in a programable fashion. The Gaussian output states are fully characterized by our measuring the full covariance matrices of the modes. The covariance matrices are absolutely calibrated by our using an in situ microwave calibration source, a shot-noise tunnel junction. Applying a variety of entanglement measures, we demonstrate both full inseparability and genuine tripartite entanglement of the states. Our method is easily extensible to more modes.
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| 2. |
- Jolin, Shan Williams, et al.
(författare)
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Multipartite entanglement in a microwave frequency comb
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Annan publikation (övrigt vetenskapligt/konstnärligt)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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| 3. |
- Jolin, Shan Williams, et al.
(författare)
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Multipartite Entanglement in a Microwave Frequency Comb
- 2023
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Ingår i: Physical Review Letters. - : American Physical Society (APS). - 0031-9007 .- 1079-7114. ; 130:12
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Tidskriftsartikel (refereegranskat)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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