Published April 2005
| Version v1
Journal article
Nonlocality of cluster states of qubits
- 1. Group of Applied Physics, University of Geneva, 20, rue de l'Ecole-de-Medecine, CH-1211 Geneva 4 (Switzerland)
- 2. ICFO, Institut de Ciencies Fotoniques, 29 Jordi Girona, 08034 Barcelona (Spain)
- 3. Institut fuer Experimentalphysik, Universitaet Wien, Boltzmanngasse 5, A-1090 Vienna (Austria)
Description
We investigate cluster states of qubits with respect to their nonlocal properties. We demonstrate that a Greenberger-Horne-Zeilinger (GHZ) argument holds for any cluster state: more precisely, it holds for any partial, thence mixed, state of a small number of connected qubits (five, in the case of one-dimensional lattices). In addition, we derive a Bell inequality that is maximally violated by the four-qubit cluster state and is not violated by the four-qubit GHZ state
Additional details
Identifiers
- DOI
- 10.1103/PhysRevA.71.042325;
- arXiv
- arXiv:quant-ph/0405119v2;
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 71
- Journal Issue
- 4
- Journal Page Range
- p. 042325-042325.5
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36092867
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- BELL THEOREM; CORRELATIONS; ENERGY LEVELS; INFORMATION THEORY; MIXED STATE; ONE-DIMENSIONAL CALCULATIONS; QUANTUM MECHANICS; QUANTUM NUMBERS
- Descriptors DEC
- MECHANICS
Optional Information
- Notes
- (c) 2005 The American Physical Society