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arXiv · 0903.1363

Partial K-way Negativities of Pure Four qubit Entangled States

S. Shelly Sharma·N. K. Sharma
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Abstract

It has been shown by Versraete et. al [F. Versraete, J. Dehaene, B. De Moor, and H. Verschelde, Phys. Rev. A65, 052112 (2002)] that by stochastic local operations and classical communication (SLOCC), a pure state of four qubits can be transformed to a state belonging to one of a set of nine families of states. By using selective partial transposition, we construct partial K-way negativities to measure the genuine 4-partite, tripartite, and bi-partite entanglement of single copy states belonging to the nine families of four qubit states. Partial K-way negativities are polynomial functions of local invariants characterizing each family of states as such entanglement monotones.

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S. Shelly Sharma, N. K. Sharma. 2009-06-17. Partial K-way Negativities of Pure Four qubit Entangled States. https://doi.org/10.1103/physreva.79.062323

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