Bounding the entanglement of N qubits with only four measurements
Quantum Physics
2014-01-06 v2
Abstract
We introduce a new measure for the genuinely N-partite (all-party) entanglement of N-qubit states using the trace distance metric, and find an algebraic formula for the GHZ-diagonal states. We then use this formula to show how the all-party entanglement of experimentally produced GHZ states of an arbitrary number of qubits may be bounded with only four measurements.
Keywords
Cite
@article{arxiv.1309.1203,
title = {Bounding the entanglement of N qubits with only four measurements},
author = {S. M. Hashemi Rafsanjani and C. J. Broadbent and J. H. Eberly},
journal= {arXiv preprint arXiv:1309.1203},
year = {2014}
}