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.
Author
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 044019Areas of Advance
Nanoscience and Nanotechnology
Subject Categories
Atom and Molecular Physics and Optics
Other Physics Topics
Condensed Matter Physics
DOI
10.1103/PhysRevApplied.10.044019