Quantum coherence dynamics of a three-level atom in a two-mode field
Journal Article
·
· Journal of Experimental and Theoretical Physics
The correlated dynamics of a three-level atom resonantly coupled to an electromagnetic cavity field is calculated ({lambda}, V, and L models). A diagrammatic representation of quantum dynamics is proposed for these models. As an example, {lambda}-atom dynamics is examined to demonstrate how the use of conventional von Neumann's reduction leads to internal decoherence (disentanglement-induced decoherence) and to the absence of atomic coherence under multiphoton excitation. The predicted absence of atomic coherence is inconsistent with characteristics of an experimentally observed atom-photon entangled state. It is shown that the correlated reduction of a composite quantum system proposed in [18] qualitatively predicts the occurrence and evolution of atomic coherence under multiphoton excitation if a seed coherence is introduced into any subsystem (the atom or a cavity mode)
- OSTI ID:
- 21242000
- Journal Information:
- Journal of Experimental and Theoretical Physics, Journal Name: Journal of Experimental and Theoretical Physics Journal Issue: 6 Vol. 106; ISSN JTPHES; ISSN 1063-7761
- Country of Publication:
- United States
- Language:
- English
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