Superposition of macroscopically distinct states means large multipartite entanglement
Journal Article
·
· Physical Review. A
- Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Tokyo 153-8902 (Japan)
I show relations between superposition of macroscopically distinct states and entanglement. These relations lead to the important conclusion that if a state includes superposition of macroscopically distinct states, the state also includes large multipartite entanglement in terms of several measures. Such a multipartite entanglement property also suggests that if a state includes superposition of macroscopically distinct states, a measurement on a single particle drastically changes the state of macroscopically many other particles, as in the case of the N-qubit Greenberger- Horne-Zeilinger state.
- OSTI ID:
- 21408138
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 81; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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