Information capacity of a quantum observable View Full Text


Ontology type: schema:ScholarlyArticle      Open Access: True


Article Info

DATE

2012-03

AUTHORS

A. S. Holevo

ABSTRACT

In this paper we consider the classical capacities of quantum-classical channels corresponding to measurement of observables. Special attention is paid to the case of continuous observables. We give formulas for unassisted and entanglement-assisted classical capacities C and Cea and consider some explicitly solvable cases, which give simple examples of entanglement-breaking channels with C < Cea. We also elaborate on the ensemble-observable duality to show that Cea for the measurement channel is related to the χ-quantity for the dual ensemble in the same way as C is related to the accessible information. This provides both accessible information and the χ-quantity for quantum ensembles dual to our examples. More... »

PAGES

1-10

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0032946012010012

DOI

http://dx.doi.org/10.1134/s0032946012010012

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1001903196


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