Method of developing analytical multipartite delocalization measures for mixed W -like states

Cathal Smyth, Gregory D. Scholes

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Abstract

We present a method of developing analytical measures of k-partite delocalization in arbitrary n-body W-like states, otherwise known as mixed states in the single-excitation subspace. These measures calculate the distance of a state to its closest reference state with k-1 entanglement. We find that the reference state is determined by the purity of the state undergoing measurement. Measures with up to 6-body delocalization for a 6-body system are derived in full, while an algorithm for general k-partite measures is given.

Original languageEnglish (US)
Article number032312
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume90
Issue number3
DOIs
StatePublished - 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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