Published December 22, 2008
| Version v1
Journal article
An alternative quantum fidelity for mixed states of qudits
Creators
- 1. Department of Physics and Institute of Theoretical Physics, Chinese University of Hong Kong (Hong Kong)
- 2. Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, HangZhou 310027 (China)
- 3. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024 (China)
Description
We give an alternative definition of quantum fidelity for two density operators on qudits in terms of their Hilbert-Schmidt inner product and their purity. It can be regarded as the well-defined operator fidelity for the two operators and satisfies all Jozsa's four axioms up to a normalization factor. This fidelity is not computationally demanding
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physleta.2008.10.083Additional details
Identifiers
- DOI
- 10.1016/j.physleta.2008.10.083;
- arXiv
- arXiv:0807.1781v1;
- PII
- S0375-9601(08)01594-6;
Publishing Information
- Journal Title
- Physics Letters. A
- Journal Volume
- 373
- Journal Issue
- 1
- Journal Page Range
- p. 58-60
- ISSN
- 0375-9601
- CODEN
- PYLAAG
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40053391
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- IMPURITIES; MIXED STATE; QUANTUM INFORMATION; QUANTUM MECHANICS; QUANTUM OPERATORS
- Descriptors DEC
- INFORMATION; MATHEMATICAL OPERATORS; MECHANICS
Optional Information
- Copyright
- Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.