In:
International Journal of Quantum Information, World Scientific Pub Co Pte Ltd, Vol. 09, No. 03 ( 2011-04), p. 967-979
Abstract:
We propose the use of atomic Wehrl entropy associated to the reduced atomic density operator as an entanglement indicator of bipartite systems. This is applied to a two-level system (one single harmonically trapped ion) by taking into account the linear center-of-mass-motional degree of freedom. Detailed analytical and explicit expressions are given, taking into account different configurations. The results show the important roles played by the laser phase and initial state setting in the evolution of the atomic Q-function, atomic Wehrl entropy and marginal atomic Q-function. Our procedure of using atomic Wehrl entropy may be applied to a system with Hilbert space of high dimension.
Type of Medium:
Online Resource
ISSN:
0219-7499
,
1793-6918
DOI:
10.1142/S0219749911007538
Language:
English
Publisher:
World Scientific Pub Co Pte Ltd
Publication Date:
2011
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