Almost every pure state of three qubits is completely determined by its two-particle reduced density matrices

N Linden, S Popescu, W K Wootters

Research output: Contribution to journalArticle (Academic Journal)peer-review

105 Citations (Scopus)

Abstract

In a system of n quantum particles, we define a measure of the degree of irreducible n-way correlation, by which we mean the correlation that cannot be accounted for by looking at the states of n - 1 particles. In the case of almost all pure states of three qubits, we show that there is no such correlation: almost every pure state of three qubits is completely determined by its two-particle reduced density matrices.

Original languageEnglish
Article number207901
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Volume89
Issue number20
DOIs
Publication statusPublished - 11 Nov 2002

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