Matrix permanent and quantum entanglement of permutation invariant states

Details Matrix permanent and quantum entanglement of permutation invariant states Matrix permanent and quantum entanglement of permutation invariant states

2009-04-30

arxiv.org/abs/0905.0012v2

J. Math. Phys. 51, 092203 (2010)

Physics

Quantum Physics

10 pages

Scientific paper

10.1063/1.3464263

We point out that a geometric measure of quantum entanglement is related to the matrix permanent when restricted to permutation invariant states. This connection allows us to interpret the permanent as an angle between vectors. By employing a recently introduced permanent inequality by Carlen, Loss and Lieb, we can prove explicit formulas of the geometric measure for permutation invariant basis states in a simple way.

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