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Effect of the phase damping of two qubits on both the quantum discord and non-local correlation

Research Authors
A.-S.F. Obada, H.A. Hessian, A.-B.A. Mohamedand M. Hashem
Research Abstract

tAn analytical solution of the master equation for two qubits-field system, in the dispersive regime, areinvestigated. The qubits are initially in Werner states and the field in coherent state. Under the influence ofthe damping, the geometric measure of quantum discord (GMQD) and the measurement-induced nonlo-cality (MIN) are investigated. GMQD and MIN are compared and illustrated their different characteristics.It is found that under the influence of damping the phenomenon of the death occurs for GMQD, but thisphenomenon does not occur for MIN even when the damping parameter is high. The initial conditionsfor the qubits play an important role in the phenomenon of collapses and revivals for GMQD and MIN.

Research Date
Research Department
Research File
Research Publisher
Contents lists available at ScienceDirect
Research Rank
applied math.
Research Vol
126
Research Website
https://www.sciencedirect.com/science/article/abs/pii/S0030402615005811
Research Year
2015
Research Pages
3432–3436