کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
850150 | 909281 | 2013 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Measurement-induced nonlocality and geometric quantum discord in two SC-charge qubits Measurement-induced nonlocality and geometric quantum discord in two SC-charge qubits](/preview/png/850150.png)
By using geometric quantum discord and measurement-induced nonlocality, quantum correlations are investigated for two superconducting (SC) charge qubits that share a large Josephson junction where the field is assumed to be prepared initially in a coherent state. It is found that the difference between measure measurement-induced nonlocality and geometric quantum discord, of the final state of the two SC-charge qubits system which is especial case of X-states, is equal to a constant value. It is found that the quantum correlations and entanglement of the qubits are very sensitive to the mean number of the coherent photons. The entanglement exists in small intervals of death quantum discord and measurement-induced nonlocality. This is further evidence in support of the fact that quantum correlation and entanglement are not synonymous.
Journal: Optik - International Journal for Light and Electron Optics - Volume 124, Issue 22, November 2013, Pages 5369–5372