Nonclassical microwave radiation from the dynamical Casimir effect
Journal article, 2013

We investigate quantum correlations in microwave radiation produced by the dynamical Casimir effect in a superconducting waveguide terminated and modulated by a superconducting quantum interference device. We apply nonclassicality tests and evaluate the entanglement for the predicted field states. For realistic circuit parameters, including thermal background noise, the results indicate that the produced radiation can be strictly nonclassical and can have a measurable amount of intermode entanglement. If measured experimentally, these nonclassicality indicators could give further evidence of the quantum nature of the dynamical Casimir radiation in these circuits.


J. R. Johansson


Göran Johansson

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

Christopher Wilson

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

Per Delsing

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

F. Nori

University of Michigan


Physical Review A - Atomic, Molecular, and Optical Physics

24699926 (ISSN) 24699934 (eISSN)

Vol. 87 4 Art. no. 043804- 043804

Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)

European Commission (EC) (EC/FP7/284566), 2012-04-01 -- 2015-03-31.

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