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Quantum Foundations
Protecting Bi-Partite Entanglement by Quantum Interferences
arXiv
Authors: Sumanta Das, G. S. Agarwal
Year
2010
Paper ID
9059
Status
Preprint
Abstract Read
~2 min
Abstract Words
92
Citations
N/A
Abstract
We show that vacuum induced coherence in three level atomic systems can lead to preservation of bi-partite entanglement, when two such atoms are prepared as two initially entangled qubits each independently interacting with their respective vacuum reservoirs. We explicitly calculate the time evolution of concurrence for two different Bell states and show that a large amount of entanglement can survive in the long time limit. The amount of entanglement left among the two qubits depends strongly on the ratio of the non- orthogonal transitions in each qubit and can be more than 50%
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- We show that vacuum induced coherence in three level atomic systems can lead to preservation of bi-partite entanglement, when two such atoms are prepared as two initially...
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