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Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity

Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
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.
2331-7019
Sandbo Chang, C. W.
d8e1548a-a34c-42ee-9b8c-c647b019ecc7
Simoen, M.
1b06465e-7e7c-4c71-a89a-1b6a45c648e9
Aumentado, José
1f9cfc99-2bfe-4884-9ba4-884a2e607b32
Sabín, Carlos
2579a1c2-57da-4a90-832a-0f1dbfd92bd6
Forn-Díaz, P.
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Vadiraj, A. M.
e7b778f3-7e13-41e3-8430-4465b786e8eb
Quijandría, Fernando
862cfd54-e1fd-4b40-b539-2599a6c42cf4
Johansson, G.
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Fuentes, I.
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Wilson, C. M.
c648f9b0-942d-4038-bbf6-73ffe4424ea7
et al.
Sandbo Chang, C. W.
d8e1548a-a34c-42ee-9b8c-c647b019ecc7
Simoen, M.
1b06465e-7e7c-4c71-a89a-1b6a45c648e9
Aumentado, José
1f9cfc99-2bfe-4884-9ba4-884a2e607b32
Sabín, Carlos
2579a1c2-57da-4a90-832a-0f1dbfd92bd6
Forn-Díaz, P.
47b68061-3b69-4409-86c8-3ad79f2b2e31
Vadiraj, A. M.
e7b778f3-7e13-41e3-8430-4465b786e8eb
Quijandría, Fernando
862cfd54-e1fd-4b40-b539-2599a6c42cf4
Johansson, G.
0de1b451-5fe5-47e1-92b9-bea0f5eb4762
Fuentes, I.
c6d65a4c-feac-44c1-9097-e0f6a9e0cf44
Wilson, C. M.
c648f9b0-942d-4038-bbf6-73ffe4424ea7

Sandbo Chang, C. W., Simoen, M., Aumentado, José, Fuentes, I. and Wilson, C. M. , et al. (2018) Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity. Physical Review Applied, 10 (4), [044019]. (doi:10.1103/PhysRevApplied.10.044019).

Record type: Article

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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More information

Published date: 8 October 2018
Additional Information: Publisher Copyright: © 2018 American Physical Society.

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Local EPrints ID: 476671
URI: http://eprints.soton.ac.uk/id/eprint/476671
ISSN: 2331-7019
PURE UUID: f27ffdd4-1c2b-43e3-b21a-c7b8bd82e519

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Date deposited: 11 May 2023 16:30
Last modified: 05 Jun 2024 19:48

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Contributors

Author: C. W. Sandbo Chang
Author: M. Simoen
Author: José Aumentado
Author: Carlos Sabín
Author: P. Forn-Díaz
Author: A. M. Vadiraj
Author: Fernando Quijandría
Author: G. Johansson
Author: I. Fuentes
Author: C. M. Wilson
Corporate Author: et al.

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