TY - JOUR
T1 - Decay of nonlocality due to adiabatic and quantum noise in the solid state
AU - Compagno, Giuseppe
AU - Bellomo, Bruno
AU - Lo Franco, Rosario
AU - D'Arrigo, null
AU - D'Arrigo, null
AU - Paladino, null
AU - Falci, null
PY - 2011
Y1 - 2011
N2 - 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 quantitative analysis is performed for typical noise figures in Josephson systems. Finally we compare, for this system, the dynamics of nonlocal correlations and of entanglement.
AB - 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 quantitative analysis is performed for typical noise figures in Josephson systems. Finally we compare, for this system, the dynamics of nonlocal correlations and of entanglement.
KW - Josephson charge qubits
KW - Nonlocality
KW - open quantum systems
KW - Josephson charge qubits
KW - Nonlocality
KW - open quantum systems
UR - http://hdl.handle.net/10447/66668
UR - http://www.worldscientific.com/doi/abs/10.1142/S0219749911007046
M3 - Article
VL - 09
SP - 63
EP - 71
JO - International Journal of Quantum Information
JF - International Journal of Quantum Information
SN - 0219-7499
ER -