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Manipulating the Sudden Death of Entanglement in Two-qubit Atomic Systems
Mahmood Irtiza Hussain,Rabia Tahira,Manzoor Ikram 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.41
We investigate the entanglement dynamics of a general two-qubit system in a noisy environment presenting analytical descriptions of the time evolution of entanglement having some unitary operations after its evolution in dissipative environments. We show that quantum gates (unitary operators) and bath switching can change the subsequent dynamics of entanglement. For this purpose, we consider σ_x and bath switching operations that change the disentanglement time from finite to infinite.