Properties of field quantum entropy evolution in the Jaynes--Cummings model with initial squeezed coherent states field |
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| Authors: | Liu Wang-Yun An Yu-Ying and Yang Zhi-Yong |
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| Affiliation: | School of Technical Physics, Xidian University, Xi'an 710071, China |
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| Abstract: | The properties of the field quantum entropy evolution in a system of
a single-mode squeezed coherent state field interacting with a
two-level atom is studied by utilizing the complete quantum theory,
and we focus our attention on the discussion of the influences of
field squeezing parameter $\gamma $, atomic distribution angle
$\theta $ and coupling strength $g$ between the field and the atom
on the properties of the evolution of field quantum entropy. The
results obtained from numerical calculation indicate that the
amplitude of oscillation of field quantum entropy evolution
decreases with the increasing of squeezing parameter $\gamma $, and
that both atomic distribution angle $\theta $ and coupling strength
$g$ between the field and the atom can influence the periodicity of
field quantum entropy evolution. |
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| Keywords: | quantum field entropy single-mode squeezed coherent states Jaynes-Cummings model |
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