Monogamy of quantum entanglement and other correlations

M Koashi, AJ Winter

Research output: Contribution to journalArticle (Academic Journal)peer-review


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.
Translated title of the contributionMonogamy of quantum entanglement and other correlations
Original languageEnglish
Article numberArt no 022309
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Volume69 (2)
Publication statusPublished - Feb 2004

Bibliographical note

Publisher: American Physical Soc

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