Entropy squeezing of the field interacting with a nearly degenerate V-type three-level atom

2005 ◽  
Vol 14 (2) ◽  
pp. 336-342 ◽  
Author(s):  
Zhou Qing-Chun ◽  
Zhu Shi-Ning
Keyword(s):  
Entropy Squeezing ◽  
Level Atom

scholarly journals Information Entropy Squeezing and Non-local Correlation Between a Two-Level Atom and Two-Mode Field Under the Classical Field Effect

2020 ◽  
Vol 8 ◽  
Author(s):  
E. M. Khalil ◽  
Sayed Abdel-Khalek ◽  
Waad Albogami ◽  
Jamel Bouslimi ◽  
Sayed M. Abo-Dahab ◽  
...  
Keyword(s):  
Information Entropy ◽  
Field Effect ◽  
Classical Field ◽  
Local Correlation ◽  
Entropy Squeezing ◽  
Mode Field ◽  
Level Atom ◽  
Non Local

scholarly journals Quantum scheme for N-level atom interacting with a two two-level atom: Atomic Fisher information and entropy squeezing

2020 ◽  
Vol 59 (3) ◽  
pp. 1259-1264 ◽  
Author(s):  
Eman M.A. Hilal ◽  
S. Alkhateeb ◽  
S. Abdel-Khalek ◽  
E.M. Khalil ◽  
Amjaad A. Almowalled
Keyword(s):  
Fisher Information ◽  
Entropy Squeezing ◽  
N Level ◽  
Level Atom

Aspects of Entropy Squeezing and Entanglement for Moving Two-Level Atom in Presence of Finite Trio Coherent State

2016 ◽  
Vol 13 (10) ◽  
pp. 7455-7459
Author(s):  
S. I Ali ◽  
A. M Mosallem ◽  
T Emam
Keyword(s):  
Entanglement Entropy ◽  
Photon Number ◽  
Atomic Motion ◽  
Von Neumann Entropy ◽  
Wehrl Entropy ◽  
Entropy Squeezing ◽  
Von Neumann ◽  
Special Values ◽  
Level Atom ◽  
Motion Parameters

In this paper, we investigate the entanglement of the interaction of three modes of radiation field with moving and unmoving two-level atom. The time evolution of the von Neumann entropy, entropy squeezing and marginal atomic Wehrl entropy is investigated. The marginal atomic Wehrl entropy as squeezing indicator of the entanglement of the system is suggested. The results beacon the important roles played by both the atomic motion parameters in the evolution of entanglement, entropy squeezing and marginal atomic Wehrl entropy. Using special values of the photon number of transition and atomic motion parameter, the entanglement phenomena of sudden death and long living entanglenment can be appeared. The results show that there is atomic motion monotonic harmonization atomic Wehrl entropy (WE). It is illustrated that the amount of the above-mentioned phenomena can be tuned by controlling the evolved parameters appropriately.

SHANNON INFORMATION AND ENTROPY SQUEEZING OF TWO FIELDS PARAMETRIC FREQUENCY CONVERTER INTERACTING WITH A SINGLE-ATOM

2003 ◽  
Vol 01 (03) ◽  
pp. 359-373 ◽  
Author(s):  
MAHMOUD ABDEL-ATY ◽  
ABDEL-SHAFY F. OBADA ◽  
M. SEBAWE ABDALLA
Keyword(s):  
Uncertainty Relation ◽  
Frequency Converter ◽  
Shannon Information ◽  
Single Atom ◽  
Field Interaction ◽  
Entropy Squeezing ◽  
Entropic Uncertainty Relation ◽  
Level Atom ◽  
Shannon Information Entropy ◽  
Parametric Frequency

In terms of a new Hamiltonian we introduce a modified Jaynes–Cummings model to represent the interaction between a two-level atom and two electromagnetic fields injected simultaneously within a perfect cavity. The field–field interaction is assumed to be in the frequency converter form. Exact expressions of the dynamical operators is given by solving the equations of the motion in the Heisenberg picture. The entropy squeezing is examined in the framework of Shannon information entropy. Using the entropic uncertainty relation, one can be able to show that there is a new kind of quantum squeezing in the entropy.

GENERATION OF A NONLINEAR TWO-MODE STARK SHIFT VIA NONDEGENERATE RAMAN TRANSITION

2007 ◽  
Vol 21 (30) ◽  
pp. 5143-5158 ◽  
Author(s):  
E. M. KHALIL
Keyword(s):  
Temporal Evolution ◽  
Stark Shift ◽  
Raman Transition ◽  
Atomic Inversion ◽  
Entropy Squeezing ◽  
Variance Squeezing ◽  
Level Atom ◽  
Quantized Electromagnetic Field ◽  
Schrödinger Picture ◽  
Careful Investigation

In this contribution, a three level atom in interaction with a two-mode quantized electromagnetic field, initially prepared in an entangled two-mode coherent state, is considered. Through the elimination of an intermediate level using the adiabatic elimination method, a nonlinear Stark shift is introduced. The exact solution of the wave function in the Schrödinger picture is obtained. Some statistical aspects through the effective two-level atom interacting with the two-mode and multiphotons processess with the nonlinear Stark shift are presented. The results are employed to perform a careful investigation of the temporal evolution of the atomic inversion, entropy squeezing and variance squeezing. It has been shown that the system is sensitive to any change in the parameter representation of the Stark shift. General conclusions reached are illustrated by numerical results.

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