mahmoud.abdelatty

محمود محمد أحمد عبدالعاطى

استاذ - أستاذ

كلية العلوم

العنوان: Sohag, 15 Str

17

إعجاب
2004 | الكلمات المفتاحية von Neumann entropy, parametric amplifier, a single atom,
Von Neumann entropy and phase distribution of two mode parametric amplifier interacting with a single atom
In the present article, we introduce a Hamiltonian model that consists of two modes of the field in a perfect cavity to interact with a single two-level atom. The interaction between the fields has been taken into account and considered to be in the parametric amplifier form. The model in one hand can be regarded as a generalization of the ... إقراء المزيد

2004 | الكلمات المفتاحية two-qubit, binomial quantum states,
Perspectives for a mixed two-qubit system with binomial quantum states
The problem of the relationship between entanglement and two-qubit systems in which it is embedded is central to the quantum information theory. This paper suggests that the concurrence hierarchy as an entanglement measure provides an alternative view of how to think about this problem. We consider mixed states of two qubits and obtain an exact solution of the time-dependent master ... إقراء المزيد

2004 | الكلمات المفتاحية Entanglement, a three-level system, dependent interaction,
Mixed-state entanglement of a three-level system with an intensity-dependent interaction
In this communication, the entanglement degree due to quasi-mutual entropy of a three-level atom interacting with a single cavity field is investigated. We consider the situation for which the three-level system is initially in a mixed state, whereas the field may start from either a coherent or a squeezed state. We present a derivation of the unitary evolution operator on ... إقراء المزيد

2004 | 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