Published November 2007
| Version v1
Journal article
Bounds on the multipartite entanglement of superpositions
Creators
- 1. Hefei National Laboratory for Physical Sciences at Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
Description
We derive the lower and upper bounds on the entanglement of a given multipartite superposition state in terms of the entanglement of the states being superposed. The first entanglement measure we use is the geometric measure and the second is the q-squashed entanglement. These bounds allow us to estimate the amount of the multipartite entanglement of superpositions. We also show that two states of high fidelity to one another do not necessarily have nearly the same q-squashed entanglement
Additional details
Identifiers
- DOI
- 10.1103/PhysRevA.76.054303;
- arXiv
- arXiv:0706.1598v5;
Publishing Information
- Journal Title
- Physical Review. A
- Journal Volume
- 76
- Journal Issue
- 5
- Journal Page Range
- p. 054303-054303.4
- ISSN
- 1050-2947
- CODEN
- PLRAAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39050019
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- ENERGY LEVELS; MANY-BODY PROBLEM; MEASURE THEORY; QUANTUM ENTANGLEMENT; QUANTUM MECHANICS
- Descriptors DEC
- MATHEMATICS; MECHANICS
Optional Information
- Notes
- (c) 2007 The American Physical Society