Entanglement Monogamy of Tripartite Quantum States

Details Entanglement Monogamy of Tripartite Quantum States Entanglement Monogamy of Tripartite Quantum States

2008-03-20

arxiv.org/abs/0803.2954v1

Physical Review A 77, 032329 (2008)

Physics

Quantum Physics

5 pages, 1 figure

Scientific paper

10.1103/PhysRevA.77.032329

An interesting monogamy equation with the form of Pythagorean theorem is found for $2\otimes 2\otimes n$-dimensional pure states, which reveals the relation among bipartite concurrence, concurrence of assistance, and genuine tripartite entanglement. At the same time, a genuine tripartite entanglement monotone as a generalization of 3-tangle is naturally obtained for $(2\otimes 2\otimes n)$- dimensional pure states in terms of a distinct idea. For mixed states, the monogamy equation is reduced to a monogamy inequality. Both results for tripartite quantum states can be employed to multipartite quantum states.

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