Journal
PHYSICAL REVIEW A
Volume 87, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.043804
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Funding
- JSPS Postdoctoral Fellowship [P11501]
- Swedish Research Council
- European Research Council
- European Commission through the FET Open project PROMISCE
- ARO, JSPS-RFBR [12-02-92100]
- MEXT Kakenhi on Quantum Cybernetics
- JSPS-FIRST program
- Austrian Science Fund (FWF) [P11501] Funding Source: Austrian Science Fund (FWF)
- Grants-in-Aid for Scientific Research [21102002, 22224007] Funding Source: KAKEN
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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. DOI: 10.1103/PhysRevA.87.043804
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