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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Entropic uncertainty in two two-level atoms interacting with a cavity field in presence of degenerate parametric amplifier
Journal of the Optical Society of America B: Optical Physics, Volume 27, No. 2, Year 2010
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Description
The analytical solution of the problem of two two-level atoms with degenerate two-photon transitions interacting with a single-mode radiation field in the presence of a parametric amplifier term is presented. The purity of the atomic state has been used to measure the degree of entanglement between the atom and the field. The temporal evolution of variance and entropy squeezing as well as atomic inversion for the single-atom case are studied. It has been shown that maximum squeezing for the variance and entropy squeezing occurs when the ratio between the amplifier coupling λ3 and the field frequency ω equals 0.26. Increasing the value of the ratio λ3 /ω further leads to the vanishing of squeezing from the system. It is also noted that the existence of the coupling parameter results in the system never reaching the pure state except at the points of revival times. The Q function has been also considered to give more information in the phase space about the system. These aspects are sensitive to changes in the amplifier parameter. © 2010 Optical Society of America.
Authors & Co-Authors
Khalil, E. M.
Egypt, Cairo
Al-azhar University
Sebawe Abdalla, Mohammed
Saudi Arabia, Riyadh
College of Sciences
Obada, Abdel Shafy Fahmy
Egypt, Cairo
Al-azhar University
Saudi Arabia, Riyadh
College of Sciences
Pelina, Jan
Czech Republic, Olomouc
Joint Laboratory of Optics
Statistics
Citations: 48
Authors: 4
Affiliations: 3
Identifiers
Doi:
10.1364/JOSAB.27.000266
ISSN:
07403224
Research Areas
Cancer