Manipulating the Sudden Death of Entanglement in Two-qubit Atomic Systems

作者：Hussain Mahmood Irtiza^*; Tahira Rabia; Ikram Manzoor

来源：Journal of the Korean Physical Society, 2011, 59(4): 2901-2904.

DOI：10.3938/jkps.59.2901

• Entanglement dynamics
• Sudden death of entanglement
• Quantum gates

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 sigma(x) and bath switching operations that change the disentanglement time from finite to infinite.

• 出版日期2011-10