Generating Multimode Entangled Microwaves with a Superconducting Parametric Cavity
Journal article, 2018

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.


C. W. Sandbo Chang

University of Waterloo

Michael Roger Andre Simoen

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Jose Aumentado

NIST, 325 Broadway

Carlos Sabin

CSIC - Instituto de Fisica Fundamental (IFF)

P. Forn-Diaz

University of Waterloo

A. M. Vadiraj

University of Waterloo

Isaac Fernando Quijandria Diaz

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Göran Johansson

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

I Fuentes

University of Vienna

University of Nottingham

C. M. Wilson

University of Waterloo

Physical Review Applied

2331-7019 (eISSN)

Vol. 10 4 044019

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics



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