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   Articles with "linear entropy" as a keyword



Detecting Non‐Markovianity via Linear Entropy of Choi State

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recommendations! Published in 2019 at "Annalen der Physik"

DOI: 10.1002/andp.201900320

Abstract: Non-Markovian dynamics detection is one of the most popular subjects in the quantum information science. In this paper, a linear-entropy-based non-Markovianity witness scheme is constructed. The positive definiteness of the Choi state will be broken… read more here.

Keywords: choi state; non markovianity; linear entropy; entropy ... See more keywords

Quantum discord based on linear entropy and thermal negativity of qutrit–qubit mixed spin chain under the influence of external magnetic field

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recommendations! Published in 2020 at "Quantum Information Processing"

DOI: 10.1007/s11128-020-02754-x

Abstract: We propose a reliable analytical method to evaluate the non-classical correlations based on linear entropy for an arbitrary qudit–qubit quantum state. The linear entropy is used to overcome the difficulty of the maximization of the… read more here.

Keywords: quantum; linear entropy; entropy; quantum discord ... See more keywords
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Dimensionally sharp inequalities for the linear entropy

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recommendations! Published in 2020 at "Linear Algebra and its Applications"

DOI: 10.1016/j.laa.2019.09.008

Abstract: Abstract We derive an inequality for the linear entropy, that gives sharp bounds for all finite dimensional systems. The derivation is based on generalised Bloch decompositions and provides a strict improvement for the possible distribution… read more here.

Keywords: dimensionally sharp; sharp inequalities; linear entropy; inequalities linear ... See more keywords

Relation between the entropy and the linear entropy in the ion–laser interaction

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recommendations! Published in 2020 at "Journal of Modern Optics"

DOI: 10.1080/09500340.2020.1772393

Abstract: It is shown that, in the interaction of a field and a qubit, there exists a relation between the linear entropy and the von Neumann entropy. The Cayley–Hamilton theorem is used to obtain such relation.… read more here.

Keywords: relation entropy; linear entropy; ion; relation ... See more keywords

Mixedness, Coherence and Entanglement in a Family of Three-Qubit States

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recommendations! Published in 2022 at "Entropy"

DOI: 10.3390/e24030324

Abstract: We consider a family of states describing three-qubit systems. We derived formulas showing the relations between linear entropy and measures of coherence such as degree of coherence, first- and second-order correlation functions. We show that… read more here.

Keywords: linear entropy; family; qubit states; coherence ... See more keywords