Abstract
A key element in the architecture of quantum information processing is a reliable physical interface between fields and qubits. Here, we study the population transfer and entanglement for a two-level atomic system interacting with entangled spin coherent states (ESCSs) considering one- and two-mode interactions. The results show that decrease in the spin number provides a periodic behavior of the entanglement exhibiting the sudden death and birth phenomena. For large values of spin, the atom–field system stabilizes at high value of entanglement during the time evolution exhibiting maximum correlations for both cases of one- and two-mode interactions. Finally, we find an interesting correlation between the entanglement and the population transfer during the time evolution. In particular, we show that the population may be used as an indicator of nonlocal correlations in the system under consideration.
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Berrada, K., Abdel-Khalek, S. Entanglement for a Two-Level Atomic System Interacting with Two-Mode Spin States. J Russ Laser Res 37, 337–344 (2016). https://doi.org/10.1007/s10946-016-9580-x
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DOI: https://doi.org/10.1007/s10946-016-9580-x