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Monogamy of entanglement and other correlations

Masato Koashi·Andreas Winter
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Abstract

It has been observed by numerous authors that a quantum system being entangled with another one limits its possible entanglement with a third system: this has been dubbed the "monogamous nature of entanglement". In this paper we present a simple identity which captures the trade-off between entanglement and classical correlation, which can be used to derive rigorous monogamy relations. We also prove various other trade-offs of a monogamy nature for other entanglement measures and secret and total correlation measures.

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Masato Koashi, Andreas Winter. 2003-10-06. Monogamy of entanglement and other correlations. https://doi.org/10.1103/physreva.69.022309

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