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

N Linden, S Popescu, WK Wooters

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

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.
Translated title of the contributionAlmost every pure state of three qubits is completely determined by its two-particle reduced density matricies
Original languageEnglish
Article numberArt. No. 207901
JournalPhysical Review Letters
Volume89 (20)
Publication statusPublished - 11 Nov 2002

Bibliographical note

Publisher: American Physical Soc
Other identifier: IDS number 610AL

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