Ernst, Moritz F. and Klesse, Rochus (2017). Regularized maximum pure-state input-output fidelity of a quantum channel. Phys. Rev. A, 96 (6). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9934

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Abstract

As a toy model for the capacity problem in quantum information theory we investigate finite and asymptotic regularizations of the maximum pure-state input-output fidelity F(N) of a general quantum channel N. We show that the asymptotic regularization (F) over tilde (N) is lower bounded by the maximum output infinity-norm upsilon(infinity)(N) of the channel. For N being a Pauli channel, we find that both quantities are equal.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Ernst, Moritz F.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klesse, RochusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-207772
DOI: 10.1103/PhysRevA.96.062319
Journal or Publication Title: Phys. Rev. A
Volume: 96
Number: 6
Date: 2017
Publisher: AMER PHYSICAL SOC
Place of Publication: COLLEGE PK
ISSN: 2469-9934
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
ADDITIVITYMultiple languages
Optics; Physics, Atomic, Molecular & ChemicalMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/20777

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