mahmoud.abdelatty

محمود محمد أحمد عبدالعاطى

استاذ - أستاذ

كلية العلوم

العنوان: Sohag, 15 Str

18

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196

أضيف حديثا
  • المقررات الدراسية 1
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 0
  • المنشورات و المؤلفات 134
  • ساعات مكتبية 0
  • الاعلانات 0
  • عدد الملفات المرفوعه 0
  • كل التنزيلات 0

WEHRL ENTROPY AND ENTANGLEMENT OF A TIME-DEPENDENT TWO-LEVEL TRAPPED ION INTERACTING WITH A LASER FIELD

2008 | الكلمات المفتاحية Wehrl entropy, Entanglement, A TIME-DEPENDEN,
WEHRL ENTROPY AND ENTANGLEMENT OF A TIME-DEPENDENT TWO-LEVEL TRAPPED ION INTERACTING WITH A LASER FIELD
The time evolution of the atomic Wehrl entropy and long-lived entanglement generation using a single trapped ion interacting with a laser field are analyzed. Starting from the Heisenberg equation of motion, an exact solution of the system is obtained by indicating that there are some interesting features when a time-dependent modulating function is considered. We demonstrate that the long-living quantum ... إقراء المزيد

Entanglement in the Bimodal Jaynes–Cummings Model with the Two-Mode Squeezed Vacuum State

2008 | الكلمات المفتاحية Jaynes, Cummings model, Atomic inversion, Two-mode squeezed vacuum state, Wehrl entropy, Linear Entropy,
Entanglement in the Bimodal Jaynes–Cummings Model with the Two-Mode Squeezed Vacuum State
In this paper, we study the interaction between the two-level atom and a bimodal cavity field, namely, two-mode Jaynes–Cummings model when the atom and the modes are initially in the atomic superposition state and two-mode squeezed vacuum state, respectively. For this system we investigate the atomic inversion, linear entropy and atomic Wehrl entropy. We show that there is a connection ... إقراء المزيد

Non classical effects of a time-dependent interaction of a three-level atoms with intelligent states, in “Nonlinear Optics Research Progress

2007 | الكلمات المفتاحية Non classical effects, a three-level atoms, intelligent states, Nonlinear Optics Research,
Non classical effects of a time-dependent interaction of a three-level atoms with intelligent states, in “Nonlinear Optics Research Progress
S. Obada, M. S. Abdallah, S. Abdel-Khalek and _M. Abdel-Aty_, Nonclassical effects of a time-dependent interaction of a three-level atoms with intelligent states, in “Nonlinear Optics Research Progress”, ed. F. Columbus (Nova Science Publishers, Inc., New York, USA 2007) إقراء المزيد

Aspects of Optical Sciences and Quantum Information

2007 | الكلمات المفتاحية Quantum information, Optical Sciences,
Aspects of Optical Sciences and Quantum Information
* _ Abdel-Aty,_Quantum Information Entropy, Chapter II, in “Aspects of Optical Sciences and Quantum Information”, ed. _M. Abdel-Aty_, (Research Signpost Publishing, 2007) إقراء المزيد

Entropy and entanglement of isotropic coupled oscillators,“Nonlinear Optics Research Progress

2007 | الكلمات المفتاحية Entropy, Entanglement, sotropic coupled oscillators, , isotropic coupled oscillators,
Entropy and entanglement of isotropic coupled oscillators,“Nonlinear Optics Research Progress
* _ Abdel-Aty_, M. S. Abdallah and A.-S. F. Obada, “Entropy and entanglement of isotropic coupled oscillators,“Nonlinear Optics Research Progress”,. ed. F. Columbus (Nova Science Publishers, Inc., New York, USA 2007) إقراء المزيد

Quantitative aspects of entanglement in optically driven quantum dots

2007 | الكلمات المفتاحية Quantitative, Entanglement, optically driven quantum dots,
Quantitative aspects of entanglement in optically driven quantum dots
We present an approach to look for the existence of maximum entanglement in a system of two identical quantum dots coupled by the Förster process and interacting with a classical laser field. Our approach is not only able to explain the existing treatments but also provides further detailed insights into the coupled dynamics of quantum-dot systems. The result demonstrates that ... إقراء المزيد

Quantum information entropy and multi-qubit entanglement

2007 | الكلمات المفتاحية Quantum, information entropy, Multi-Qubit, Entanglement,
Quantum information entropy and multi-qubit entanglement
The exciting new features of entanglement are burgeoning with revolutionary new advances in the areas of quantum communication, quantum information processing and quantum computing. We review recent theoretical studies and applications of pure and mixed states entanglement of trapped ions interacting with a laser field. After an introduction to the basic concepts of traditional entanglement measures and methodology, the main ... إقراء المزيد

Sudden death and long-lived entanglement of two trapped ions

2007 | الكلمات المفتاحية sudden death, Entanglement, two trapped ions,
Sudden death and long-lived entanglement of two trapped ions
The dynamical properties of quantum entanglement in two effective two-level trapped ions interacting with a laser field are studied in terms of the negative eigenvalues of the partial transposition of the density operator. In contrast to the usual belief that destroying the entanglement can be observed due to the environment, it is found that the Stark shift can also produce ... إقراء المزيد

Geometric phases for a three-level Lambda-type system in one-dimensional photonic band gaps

2007 | الكلمات المفتاحية photonic band gaps, Lambda-type system, Geometric phases,
Geometric phases for a three-level Lambda-type system in one-dimensional photonic band gaps
* _ Abdel-Aty, __Geometric phases for a three-level Lambda-type system in one-dimensional photonic band gaps_ APPLIED PHYSICS B: LASER AND OPTICS, 88, 29–36 (2007) إقراء المزيد

Fidelity of isotropic-coupled oscillators interacting with a single atom

2007 | الكلمات المفتاحية coupled oscillators interactin, Fidelity of isotropic, a single atom,
Fidelity of isotropic-coupled oscillators interacting with a single atom
A model of a single atom interacting with isotropic two modes pumped simultaneously within a perfect cavity is examined. The quantum fidelity is employed to measure the quality of transmitted information as a function of the input state. The behavior of the quantum fidelity is studied at off-resonances between the atom and fields for different preparations of initial states. إقراء المزيد