Quantum interference in timed Dicke basis and its effect on bipartite entanglement
arXiv:1109.4341 · doi:10.1103/PhysRevA.83.042301
Abstract
We analyze the effect of position dependent excitation phase on the properties of entanglement between two qubits formed in atomic systems. We show that the excitation phase induces a vacuum mediated quantum interference in the system that affects the dynamical behavior of entanglement between the qubits. It is also found that the quantum interference leads to a coherent population transfer between the symmetric and antisymmetric states which can considerably modify the dynamics of two-qubit entanglement and can even prevent finite time disentanglement (sudden death) under certain conditions.
9 pages, 8 figures
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