ahmedabudief

Dr. Ahmed Mohammed Abu-Dief Mohammed

Assistant Professor - Assistant professor of Inorganic and Physical Chemistry

Faculty of science

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

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Publications Which contain the keyword: Geometric Phase


2018-12-07 17:58:23 Keywords 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. Read more

Geometric Phase and Disentanglement of a Moving Four-Level Atom in the Presence of Nonlinear Medium
In this paper, we investigate the geometric phase of the field interacting with a moving four-level atom in the presence of Kerr medium. The results show that the atomic motion, the field-mode structure and Kerr medium play important roles in the evolution of the system dynamics. As illustration, we examine the behavior of the geometric phase and entanglement with experimentally ... Read more

2018-12-05 15:29:24 Keywords Geometric Phase, semiconductor, Microcavities,
Engineering Geometric Phase in Semiconductor Microcavities
We present rigorous investigations of the geometric phase in semiconductor microcavities. The effects of excitonic spontaneous emission, initial state setting and cavity dissipation have been discussed. It is shown that the geometric phase decays exponentially due to the presence of excitonic spontaneous emission. More importantly, the inclusion of the phase shift leads to an enhanced sensitivity for the control of ... Read more

Geometric Phase and Entanglement of a Three-Level Atom With and Without Rotating Wave Approximation
In this paper, we study the dynamics of entanglement between three-level atom and optical field, initially prepared in the squeezed coherent state. We discuss the dynamical behavior of the geometric phase and entanglement, measured by the von Neumann entropy, with and without rotating wave approximation during the time of evolution. The effect of the squeezing and detuning parameters on the ... Read more

Geometric Phase of Spin-Orbit Interaction in Multigated Nanowires
Geometric Phase of Spin-Orbit Interaction in Multigated Nanowires Read more