Journal article
Extreme nonlocality with one photon
- Abstract:
- Quantum nonlocality is typically assigned to systems of two or more well-separated particles, but nonlocality can also exist in systems consisting of just a single particle when one considers the subsystems to be distant spatial field modes. Single particle nonlocality has been confirmed experimentally via a bipartite Bell inequality. In this paper, we introduce an N-party Hardy-like proof of the impossibility of local elements of reality and a Bell inequality for local realistic theories in the case of a single particle superposed symmetrically over N spatial field modes (i.e. N qubit W state). We show that, in the limit of large N, the Hardy-like proof effectively becomes an all-versus-nothing (or Greenberger-Horne-Zeilinger (GHZ)-like) proof, and the quantum-classical gap of the Bell inequality tends to be the same as that in a three-particle GHZ experiment. We describe how to test the nonlocality in realistic systems. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 962.5KB, Terms of use)
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- Publisher copy:
- 10.1088/1367-2630/13/5/053054
Authors
+ Engineering and Physical Sciences Research Council
More from this funder
- Funding agency for:
- Heaney, L
- Publisher:
- IOP Publishing
- Journal:
- New Journal of Physics More from this journal
- Volume:
- 13
- Issue:
- 5
- Article number:
- 053054
- Publication date:
- 2011-05-27
- DOI:
- EISSN:
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1367-2630
- ISSN:
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1367-2630
- Language:
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English
- UUID:
-
uuid:e79cd65e-36f6-42b5-a786-eb1f1d152055
- Local pid:
-
pubs:164093
- Source identifiers:
-
164093
- Deposit date:
-
2012-12-19
Terms of use
- Copyright holder:
- IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
- Copyright date:
- 2011
- Notes:
- Copyright IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Authors, their institutions and third parties all have the same rights to reuse articles published in New Journal of Physics in accordance with the Creative Commons Attribution 3.0 Unported (CC-BY) license. This allows the articles to be shared, adapted and made commercial use of subject to appropriate attribution.
- Licence:
- CC Attribution (CC BY)
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