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Acta Physica Hungarica B) Quantum Electronics

Unitary Transfer of Entanglement in Multipartite Two-Level Systems

Riccardo Messina, Anna Napoli, ANTONINO MESSINA

Published Apr 1, 2005• 0 citations
Publisher
DOI
10.1556/aph.23.2005.1-2.11

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We study the dynamics of entanglement transfer in a system composed of two initially correlated three-level atoms, each located in a cavity interacting with its own reservoir. Instead of using the usual master equation approach, we consider the dynamics of the reservoir. In this situation, we show that the entanglement is completely transferred from atoms to reservoirs. Although the cavities mediate this entanglement transfer, we show that under certain conditions, no entanglement is found in cavities throughout the dynamics. Considering the entanglement dynamics of interacting and non-interacting bipartite partitions, we found time windows where the entanglement can only flow through interacting partitions, depending on the system parameters.
We study the dynamics of entanglement transfer in a system composed of two initially correlated three-level atoms, each located in a cavity interacting with its own reservoir. Instead of tracing out reservoir modes to describe the dynamics using the master equation approach, we consider explicitly the dynamics of the reservoirs. In this situation, we show that the entanglement is completely transferred from atoms to reservoirs. Although the cavities mediate this entanglement transfer, we show that under certain conditions, no entanglement is found in cavities throughout the dynamics. Considering the entanglement dynamics of interacting and noninteracting bipartite subsystems, we found time windows where the entanglement can only flow through interacting subsystems, depending on the system parameters.