Protecting Bi-Partite Entanglement by Quantum Interferences

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%

4 pages, 3 figures

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Cited by in corpus (9)

• Cavity-based architecture to preserve quantum coherence and entanglement
• Protecting entanglement by adjusting the velocities of moving qubits inside non-Markovian environments
• Vacuum-Induced Coherence in Ultracold Photoassociative Ro-Vibrational Excitations
• Quantum interference in timed Dicke basis and its effect on bipartite entanglement
• Interference-assisted squeezing in fluorescence radiation
• Dynamics of a multipartite hybrid quantum system with beamsplitter, dipole-dipole, and Ising interactions
• Cavity quantum interferences with three-level atoms
• Probing multipartite entanglement, coherence and quantum information preservation under classical Ornstein-Uhlenbeck noise
• Population trapping in the excited states using vacuum-induced coherence and adiabatic process