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6 papers · 2 filters
Dynamics of impurity, local and non-local information for two non identical qubits
N. Metwally, M. Abdel-Aty, M. Sebawe Abdall
From the separability point of view the problem of two atoms interact with a single cavity mode is investigated. The density matrix is calculated and used to discuss the entangleme…
Maximum entangled states and quantum Teleportation via Single Cooper pair Box
N. Metwally, A. A. El-Amin
In this contribution, we study a single Cooper pair box interacts with a single cavity mode. We show the roles played by the detuning parameters and charged capacities on the degre…
Dynamics of Bloch vectors and the channel capacity of a non identical charged qubit pair
Nasser Metwally, Mahmoud Abdel-Aty
We have considered a system of two superconducting charge qubits capacitively coupled to a microwave resonator. The dynamics of the Bloch vectors are investigated for different reg…
Quantum deficits and correlations of two superconducting charge qubits
Nasser Metwally, Mahamoud Abde-Aty
Motivated by recent experiments [Pashkin et al. Nature, \textbf{421}, 823 (2003)] which showed coherent oscillations of two superconducting qubits system, we consider a system of t…
Tripartite entanglement dynamics for atom in a two-mode nonlinear cavity
Mahmoud Abdel-Aty, M. Sebawe Abdalla, Barry C. Sanders
In this communication we introduce a new model which represents the interaction between an atom and two fields injected simultaneously within a cavity including the nonlinear coupl…
New aspects of the purity and information of an entangled qubit pair
Nasser Metwally
In this article, we investigate the purity dynamics of entangled 2 two-level atoms interacting with a single quantized electromagnetic field. We show that the purity of the qubit p…