Monogamy Inequality in terms of Negativity for Three-Qubit States

Details Monogamy Inequality in terms of Negativity for Three-Qubit States Monogamy Inequality in terms of Negativity for Three-Qubit States

2007-02-13

arxiv.org/abs/quant-ph/0702127v4

Physical Review A 75, 062308 (2007)

Physics

Quantum Physics

5 pages, 3 figures, minor modifications are made

Scientific paper

10.1103/PhysRevA.75.062308

We propose a new entanglement measure to quantify three qubits entanglement in terms of negativity. A monogamy inequality analogous to Coffman-Kundu-Wootters (CKW) inequality is established. This consequently leads to a definition of residual entanglement, which is referred to as three-$\pi$ in order to distinguish from three-tangle. The three-$\pi$ is proved to be a natural entanglement measure. By contrast to the three-tangle, it is shown that the three-$\pi$ always gives greater than zero values for $W$ and GHZ classes, implying there always exists three-way entanglement for them, and three-tangle generally underestimates three-way entanglement of a given system. This investigation will offer an alternative tool to understand genuine multipartite entanglement.

Affiliated with

Also associated with

No associations

Rating

Monogamy Inequality in terms of Negativity for Three-Qubit States does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Monogamy Inequality in terms of Negativity for Three-Qubit States, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Monogamy Inequality in terms of Negativity for Three-Qubit States will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-410098