scholarly journals Entropy squeezing and atomic Wehrl density for the interaction between SU(1,1) Lie algebra and a three-level atom in presence of laser field

2021 ◽  
Vol 30 ◽  
pp. 104759
Author(s):  
A.-S.F. Obada ◽  
Nawal A. Alshehri ◽  
E.M. Khalil ◽  
S. Abdel-Khalek ◽  
H.F. Habeba
Keyword(s):  
Lie Algebra ◽  
Laser Field ◽  
Entropy Squeezing ◽  
Level Atom

High-order harmonic emission from a three-level atom in a laser field

1999 ◽  
Vol 46 (5) ◽  
pp. 743-754 ◽  
Author(s):  
Pasquale Caldara ◽  
Emilio Fiordilino
Keyword(s):  
Laser Field ◽  
High Order ◽  
Harmonic Emission ◽  
High Order Harmonic ◽  
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

Entropy squeezing, nonlocal correlation and purification properties of two-trap ion interaction with laser field in the presence of Stark shift effect

2019 ◽  
Vol 33 (12) ◽  
pp. 1950118
Author(s):  
Yas Al-Hadeethi ◽  
Bahaaudin M. Raffah ◽  
Nawal Almalky ◽  
E. M. Khalil
Keyword(s):  
Laser Field ◽  
Entanglement Entropy ◽  
Dynamical Behavior ◽  
Stark Shift ◽  
Entanglement Sudden Death ◽  
Entropy Squeezing ◽  
Trapped Ion ◽  
Nonlocal Correlation ◽  
Initial States ◽  
Shift Effect

In this paper, the interaction between two trap ions with laser beam and electromagnetic field containing the Stark shift terms has been investigated. The analytical solution for the differential equations which describes the system Hamiltonian is obtained. The dynamical behavior for the entanglement, entropy squeezing and purity of system are discussed. Some important physical characteristics such as revivals and collapses for the occupation of the trapped ion, entanglement sudden death (birth) and single trapped ion entropy squeezing are discussed. In addition, the influence of Lamb–Dicke parameter and the initial states on the evolution of the entanglement, linear entropy are studied. Finally, some remarks about the obtained results are given briefly.

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.

EFFECT OF PHASE FLUCTUATIONS OF LASER ON OPTICAL FORCES IN A TWO-LEVEL ATOM

2000 ◽  
Vol 14 (17n18) ◽  
pp. 631-637 ◽  
Author(s):  
S. V. LAWANDE ◽  
P. V. PANAT
Keyword(s):  
Angular Momentum ◽  
Steady State ◽  
Master Equation ◽  
Gaussian Beam ◽  
Laser Field ◽  
Density Operator ◽  
Bessel Beam ◽  
Optical Forces ◽  
Phase Fluctuations ◽  
Level Atom

An effect of phase fluctuations of a driving laser field on dissipative and dipolar forces of two-level atom is considered. The phase fluctuations are treated by a phase diffusion model where phase fluctuations follow Wiener–Levy process. An exact master equation for the relevant density operator is obtained and solved in the steady state. Optical forces are calculated. The effect of phase fluctuations on angular momentum imparted by a Laguerre–Gaussian beam and an ideal Bessel beam to the atom is investigated.

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