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Entanglement Theory Quantum Correlations
Bounds on Negativity of Superpositions
arXiv
Authors: Yong-Cheng Ou, Heng Fan
Year
2007
Paper ID
50646
Status
Preprint
Abstract Read
~2 min
Abstract Words
99
Citations
N/A
Abstract
The entanglement quantified by negativity of pure bipartite superposed states is studied. We show that if the entanglement is quantified by the concurrence two pure states of high fidelity to one another still have nearly the same entanglement. Furthermore this conclusion can be guaranteed by our obtained inequality, and the concurrence is shown to be a continuous function even in infinite dimensions. The bounds on the negativity of superposed states in terms of those of the states being superposed are obtained. These bounds can find useful applications in estimating the amount of the entanglement of a given pure state.
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- This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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- The entanglement quantified by negativity of pure bipartite superposed states is studied.
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