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arXiv · 2004.11668

Quantum discord of certain two-qubit states

Jianming Zhou·Xiaoli Hu·Naihuan Jing
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Abstract

Quantum discord is an effective measure of quantum correlation introduced by Olliver and Zurek. We evaluate analytically the quantum discord for a large family of non-X-states. Exact solutions of the quantum discord are obtained of the four parametric space for non-X-states. Dynamic behavior of the quantum discord is also explored under the action of the Kraus operator.

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Jianming Zhou, Xiaoli Hu, Naihuan Jing. 2020-04-24. Quantum discord of certain two-qubit states. https://doi.org/10.1007/s10773-019-04333-y

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