Multiqubit entanglement witness

Details Multiqubit entanglement witness Multiqubit entanglement witness

2007-05-18

arxiv.org/abs/0705.2665v1

Physics

Quantum Physics

Revtex, 11 pages

Scientific paper

10.1103/PhysRevA.76.022330

We introduce a feasible method of constructing the entanglement witness that detects the genuine entanglement of a given pure multiqubit state. We illustrate our method in the scenario of constructing the witnesses for the multiqubit states that are broadly theoretically and experimentally investigated. It is shown that our method can construct the effective witnesses for experiments. We also investigate the entanglement detection of symmetric states and mixed states.

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