Bounding the entanglement of N qubits with only four measurements

S. M. Hashemi Rafsanjani, C. J. Broadbent, J. H. Eberly

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We introduce a 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 Greenberger-Horne-Zeilinger (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.

Original languageEnglish (US)
Article number062331
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number6
StatePublished - Dec 26 2013
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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