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- Title
Entanglement and purity loss for the system of two 2-level atoms in the presence of the Stark shift.
- Authors
Hessian, Hosny; Hashem, M.
- Abstract
In this paper, we have presented an analytic solution for two 2-level identical atoms interacting with a single-mode quantized radiation field, taking into account the level shifts produced by Stark shift. We assume that the two atoms are initially prepared in the exited state and the field in a coherent state. We investigate the purity loss of the system and bipartite partitions of the system. The effects of the Stark shift on the purity loss of the system and different bipartite partitions of the system (field-two atoms, atom-(field+atom)) through the tangles are considered. In particular, the effect of the Stark shift on the amount of entanglement between atoms and field is evaluated by the negativity.
- Subjects
ATOMS; BIPARTITE graphs; STARK effect; COHERENCE (Optics); COHERENT states; PARTITIONS (Mathematics)
- Publication
Quantum Information Processing, 2011, Vol 10, Issue 4, p543
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-010-0210-1