mahmoud.abdelatty

محمود محمد أحمد عبدالعاطى

استاذ - أستاذ

كلية العلوم

العنوان: Sohag, 15 Str

17

إعجاب
2010 | الكلمات المفتاحية Geometric Phase, THREE-LEVEL ATOM,
Geometric phase of a moving three-level atom
In this paper, we investigate the geometric phase of the field interacting with $\Xi $-type moving three-level atom. The results show that the atomic motion and the field-mode structure play important roles in the evolution of the system dynamics and geometric phase. We test this observation with experimentally accessible parameters and some new aspects are obtained. إقراء المزيد

2010 | الكلمات المفتاحية Mathematical modeling, H1N1,
Mathematical Modeling of H1N1
Mahmoud Abdel-Aty إقراء المزيد

2010 | الكلمات المفتاحية a Cavity Field, a three-level atom, Entropy squeezing,
Entropy squeezing of a three-level atom interacting with a cavity field
We study the field entropy squeezing as a measure of the entanglement in a three-level system interacting with a cavity field. Numerical calculations under current experimental conditions are performed and it is found that the initial state setting and atom-field coupling present changes of the general features of the field entropy squeezing dramatically إقراء المزيد

2010 | الكلمات المفتاحية sudden birth, sudden death, Entanglement, a bimodal lossy cavity,
Entanglement sudden death and sudden birth of an atom coupled to a bimodal lossy cavity
We propose another method for realizing entanglement sudden death and sudden birth using a single atom interacting with a bimodal cavity field in a dissipative environment. By suitably choosing the system's parameters and precisely controlling the dynamics, we find a novel connection between maximum entanglement and mixed state parameters. We discuss the intricate relationship between the entanglement dynamics and the ... إقراء المزيد

2010 | الكلمات المفتاحية Phase probability distribution, Two-level atoms, Cavity decay,
Anabiosis of phase distribution of a three-level atom
We study the phase probability distribution of a three-level atom interacting with a cavity field in the presence of two-photon detuning and decoherence. Anabiosis of the phase probability distribution is observed due to the presence of the Stark shift. The simulation demonstrates that there is an enhancement of the phase sensitivity as soon as the two-photon detuning is considered. The ... إقراء المزيد

2010 | الكلمات المفتاحية Dynamics,
Dynamics of an atom coupled through a parametric frequency converter with quantum and classical fields
n this communication we introduce a model of a two-level system which represents the interaction between an atom and external quantum and classical electric fields through a parametric frequency converter. We show that the system can be reduced to an effective Jaynes–Cummings model by adequate adjustment of the field coupling in the frequency converter. The atom dynamics and the atom-quantum ... إقراء المزيد

Delayed creation of entanglement in superconducting qubits interacting with a microwave field
We explore the role played by the intrinsic decoherence in superconducting charge qubits in the presence of a microwave field applied as a magnetic flux. We study how the delayed creation of entanglement, which is opposite to the sudden death of entanglement, can be induced. We compute the time evolution of the population inversion, total correlation and entanglement, taking into ... إقراء المزيد

2010 | الكلمات المفتاحية Enhancement, non Classical Properties, Qubit, Deformed Operators,
Enhancement non Classical Properties of a Pair of Qubit via Deformed Operators
The present paper is devoted to consider the problem of the interaction between a pair of entangled qubits and a multiphotons cavity mode. The deformed operators are involved in the Hamiltonian model which represents such system. The exact solution of the wave function is obtained and the density matrix is contracted. For two different types of Bell states, the purity ... إقراء المزيد