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- W1990674082 abstract "For bipartite pure and mixed quantum states, in addition to the quantum mutual information, there is another measure of total correlation, namely, the entanglement of purification. We study the monogamy, polygamy, and additivity properties of the entanglement of purification for pure and mixed states. In this paper, we show that, in contrast to the quantum mutual information which is strictly monogamous for any tripartite pure states, the entanglement of purification is polygamous for the same. This shows that there can be genuinely two types of total correlation across any bipartite cross in a pure tripartite state. Furthermore, we find the lower bound and actual values of the entanglement of purification for different classes of tripartite and higher-dimensional bipartite mixed states. Thereafter, we show that if entanglement of purification is not additive on tensor product states, it is actually subadditive. Using these results, we identify some states which are additive on tensor products for entanglement of purification. The implications of these findings on the quantum advantage of dense coding are briefly discussed, whereby we show that for tripartite pure states, it is strictly monogamous and if it is nonadditive, then it is superadditive on tensor product states." @default.
- W1990674082 created "2016-06-24" @default.
- W1990674082 creator A5048542691 @default.
- W1990674082 creator A5067671236 @default.
- W1990674082 date "2015-04-16" @default.
- W1990674082 modified "2023-09-25" @default.
- W1990674082 title "Monogamy, polygamy, and other properties of entanglement of purification" @default.
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- W1990674082 doi "https://doi.org/10.1103/physreva.91.042323" @default.
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