2014

Quantum Correlation with Sandwiched Relative Entropies: Advantageous as Order Parameter in Quantum Phase Transitions

Misra, Avijit, Biswas, Anindya, Pati, Arun K. et al.

Understand

Quantum discord is a measure of quantum correlations beyond the entanglement-separability paradigm.

It is conceptualized by using the von Neumann entropy as a measure of disorder.
We introduce a class of quantum correlation measures as differences between total and classical correlations, in a shared quantum state, in terms of the sandwiched relative R\'{e}nyi and Tsallis entropies.
We compare our results with those obtained by using the traditional relative entropies.

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