Decay of nonlocality due to adiabatic and quantum noise in the solid state

Details Decay of nonlocality due to adiabatic and quantum noise in the solid state Decay of nonlocality due to adiabatic and quantum noise in the solid state

2010-06-11

arxiv.org/abs/1006.2270v1

International Journal of Quantum Information 9, 63 (2011)

Physics

Quantum Physics

9 pages, 3 figures

Scientific paper

10.1142/S0219749911007046

We study the decay of quantum nonlocality, identified by the violation of the Clauser-Horne-Shimony-Holt (CHSH) Bell inequality, for two noninteracting Josephson qubits subject to independent baths with broadband spectra typical of solid state nanodevices. The bath noise can be separated in an adiabatic (low-frequency) and in a quantum (high-frequency) part. We point out the qualitative different effects on quantum nonlocal correlations induced by adiabatic and quantum noise. A quantitaive analysis is performed for typical noise figures in Josephson systems. Finally we compare, for this system, the dynamics of nonlocal correlations and of entanglement.

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