Ahmedgaber

احمد جابر احمد عبد المجيد

استاذ مساعد - مدير مستشفي الاستقبال والطوارئ

كلية الطب

العنوان: الثقافه - برج الفردوس - سوهاج

11

إعجاب

المنشورات و المؤلفات التي تحتوي علي الكلمة المفتاحية: Entanglement


2018-12-15 11:09:56 الكلمات المفتاحية Entanglement, a bipartite mixed state, a binomial state,
Entanglement of a bipartite mixed state in the laser‐ion interaction with a binomial state
In the present communication we explore and develop the theory of entanglement measures. As a result we obtain a general criterion of a bipartite mixed states entanglement due to the quasi‐mutual entropy for a single trapped two‐level ion interacting with a laser field. This general expression of the entanglement degree is obtained with the physical significance and without the diagonal ... إقراء المزيد

2018-12-13 20:23:51 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

2018-12-12 14:45:04 الكلمات المفتاحية sudden birth, sudden death, Entanglement,
Delayed sudden birth and sudden death of entanglement in Josephson-charge qubits
Distinctive features of the entanglement dynamics of a circuit containing two-coupled superconducting charge qubits are explored. The striking effects of junction coupling on the entanglement are presented in terms of the concurrence. We also point out the importance effects of initial state selection for obtaining different features of entanglement, such as, sudden death and sudden birth. إقراء المزيد

2018-12-07 18:34:06 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

2018-12-03 12:36:14 الكلمات المفتاحية Entanglement, Energy, multi-atom,
New Perspectives on Nonlinear Multi-Atoms Interacting with a Cavity Field
We investigate the entanglement dynamics of two two-level atoms interacting with a quantized cavity field, considering the level shifts produced by the Stark effect. We perform comparisons of the entanglement evolution of this system when the cavity is filled with a Kerr-like medium. The presence of entanglement sudden death and sudden birth using extended Werner-like states is observed. Entanglement is ... إقراء المزيد

2018-12-03 14:23:15 الكلمات المفتاحية entropic inequalities, Entanglement, Locality, Bell inequalities,
Locality and classicality: role of entropic inequalities
The use of the so-called entropic inequalities is revisited in the light of new quantum correlation measures, specially nonlocality. We introduce the concept of _classicality_ as the nonviolation of these classical inequalities by quantum states of several multiqubit systems and compare it with the nonviolation of Bell inequalities, that is, _locality_. We explore—numerically and analytically—the relationship between several other quantum ... إقراء المزيد

2018-12-05 13:13:50 الكلمات المفتاحية trap phonon modes, multi-trapped ions, rebirth, Entanglement,
Entanglement rebirth of multi-trapped ions with trap phonon modes
We consider a multi-qubit system consisting of two trapped ions coupled in a laser field. The ions are identical three-level electronic systems which interact with one another through the phonon modes of their relative or center of mass motions, and the system is tuned so that two-phonon processes dominate the electronic transitions. The resulting evolution of the system is studied ... إقراء المزيد

2018-12-14 21:06:01 الكلمات المفتاحية Qualitative aspects, Entanglement, three-level model, Photonic crystals,
Qualitative aspects of the entanglement in the three-level model with photonic crystals
This communication is an enquiry into the circumstances under which concurrence and phase entropy methods can give an answer to the question of quantum entanglement in the composite state when the photonic band gap is exhibited by the presence of photonic crystals in a three-level system. An analytic approach is proposed for any three-level system in the presence of photonic ... إقراء المزيد

2018-12-13 20:28:10 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

2018-12-14 20:47:30 الكلمات المفتاحية Entanglement, a single trapped ion, A LASER FIELD,
Engineering entanglement in a single trapped ion interacting with a laser field
Engineering entanglement in a single trapped ion interacting with a laser field إقراء المزيد