Abstract
We discuss the atom-field entanglement by proposing a scheme for nonlocality of the atom-field system via nonlocaling the ladder atomic and field operators by a nonlocal unitary operator. It is shown that the standard coherent states of the constructed nonlocal atom-field quantum system are, as an issue of nonlocality, entangled. On the other hand, by proposing a model Hamiltonian for the interacting atom-field system, the standard entangled coherent states can be generated by the dynamical time evolution of the atom-field system.
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Behzadi, N. Entanglement observation among single mode bosonic field and an atom. Quantum Inf Process 11, 777–785 (2012). https://doi.org/10.1007/s11128-011-0286-2
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DOI: https://doi.org/10.1007/s11128-011-0286-2