Numerical analysis of capacities for two-qubit unitary operations

Berry, D. W. and Sanders, B. C. (2005) Numerical analysis of capacities for two-qubit unitary operations. Physical Review A, 71 2: 022304. doi:10.1103/PhysRevA.71.022304

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Author Berry, D. W.
Sanders, B. C.
Title Numerical analysis of capacities for two-qubit unitary operations
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2005-01-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.71.022304
Open Access Status File (Publisher version)
Volume 71
Issue 2
Start page 022304
Total pages 11
Editor B. Crasemann
Place of publication United States
Publisher American Physical Society
Language eng
Subject C1
240301 Atomic and Molecular Physics
780102 Physical sciences
Abstract We present numerical results on the capacities of two-qubit unitary operations for performing communication and creating entanglement. The capacities for communication considered are based upon the increase in Holevo information of an ensemble. Our results indicate that the capacity may be accurately estimated using ensemble sizes and ancilla dimensions of 4. In addition, the calculated values of these capacities were close to, and in some cases equal to, the similarly defined entangling capacities; this result indicates connections between these capacities.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Entanglement Capability
Classical Information
Quantum Channel
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 16:21:09 EST