Multiplicativity of accessible fidelity and quantumness for sets of quantum states

KMR Audenaert, CA Fuchs, C King, AJ Winter

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

7 Citations (Scopus)

Abstract

Two measures of sensitivity to eavesdropping for alphabets of quantum states were recently introduced by Fuchs and Sasaki in quant-ph/0302092. These are the accessible fidelity and quantumness. In this paper we prove an important property of both measures: The are multiplicative under tensor products. The proof in the case of accessible fidelity shows a connection between the measure and characteristics of entanglement-breaking quantum channels.
Translated title of the contributionMultiplicativity of accessible fidelity and quantumness for sets of quantum states
Original languageEnglish
Pages (from-to)1 - 11
JournalQuantum Information and Computation
Volume4 (1)
Publication statusPublished - Jan 2004

Bibliographical note

Publisher: Rinton Press, Inc
Other identifier: IDS Number: 804JC

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