ahmedabudief

Dr. Ahmed Mohamed Abu-Dief

Professor - Professor of Physical and Inorganic Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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Publications Which contain the keyword: Quantum information


2018-11-30 15:05:51 Keywords Quantum information, Thermal state, Entropy,
The Population Inversion and the Entropy of a Moving Two-Level Atom in Interaction with a Quantized Field
An atom with only two energy eigenvalues is described by a two-dimensional state space spanned by the two energy eigenstates is called a two-level atom. We consider the interaction between a two-level atom system with a constant velocity. An analytic solution of the systems which interacts with a quantized field is provided. Furthermore, the significant effect of the temperature on ... Read more

2018-12-07 17:22:28 Keywords Entanglement, Quantum information,
Advances in Entanglement and Quantum Information Theory
In this book, various types of entanglement have been discussed for systems start from a pure state or mixed states and many new features have been discovered. A general expression of the mixed state entanglement is obtained with the physical significance (with or without the diagonal approximation treatments). The particular advantages of using Shannon entropy are highlighted and the information ... Read more

2018-12-13 15:27:07 Keywords 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) Read more

2018-12-14 20:51:12 Keywords photonic, bandgaps, a three-level atom, Quantum information,
Quantum information of a three-level atom in one-dimensional photonic bandgaps
In this paper a novel analytical method is applied to the problem of investigating the fidelity and linear entropy of a three-level system in the presence of a photonic band gap. Using this analytic solution, we conclusively calculate the fidelity and linear entropy, related particularly to the entanglement phenomena. We demonstrate how fluctuations in the fidelity and linear entropy are ... Read more

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