Chinese Physics B

Some studies of the interaction between two two-level atoms and SU (1, 1) quantum systems

Tarek M. El-Shahat, Mohamad Kh. Ismail

Published Oct 1, 2018• 3 citations

Abstract

Herein, we present an approach to look for the best phenomenon to measure quantum correlation. The system of two isolated qubits each interacting with a single-mode cavity was theoretically created to study the quantum correlation. Some of the phenomena, such as the quantum discord and concurrence, were generated through such a system. The influences of initial state purity, qubit motion, and detuning parameters were discussed for the phenomena. These parameters for a specific value show that the behavior of phenomena are analogous. It is interesting to mention that some values of detuning undergo a sudden death of phenomena, and the quantum discord still captures the qubits quantum correlation. We predict that the quantum discord may be a better measure of quantum correlation than concurrence.

DOI: 10.1088/1674-1056/27/10/100201

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