Ladder Proof of Nonlocality without Inequalities: Theoretical and Experimental Results
Open accessAbstract
We show how a previous demonstration of nonlocality without inequalities for two spin-half particles can be improved so that a greater proportion of the pairs are shown to be subject to a contradiction with local realism. This is achieved by considering more settings of the apparatus at each end. Also, we report on an experimental realization employing a tunable source of polarization entangled photons. The experimental results violate locality (modulo, the efficiency loophole).
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Hardy's scheme was scaled up so that (50 - h)% of photon pairs lead to coincidence events prohibited by local realism, demonstrated by Boschi et al. 1997.
“Hardy's scheme was later scaled up, so that (50 -h)% of photon pairs lead to coincidence events prohibited by local realism (where h is any small finite number).The effect was demonstrated in an experiment by Boschi et al. 1997.”
From Multiphoton entanglement and interferometry (2012) · cites this paper as Boschi et al. 1997
Cites
Bell’s Theorem, Quantum Theory and Conceptions of the Universe
(1989) · doi:10.1007/978-94-017-0849-4 · Cited by 1,632 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Multiphoton entanglement and interferometry
Pan, J.-W., Chen, Z.-B., Lu, C.-Y., Weinfurter, H., Zeilinger, A., & Żukowski, M. (2012) · Reviews of Modern Physics · doi:10.1103/revmodphys.84.777 · Cited by 1,410 · see citing works
“For instance, for two-particle states, Hardy (1993) has found situations, where quantum mechanics predicts a specific result to occur sometimes, and local realism predicts the same result never to occur (for an experiment see Boschi et al., 1997).”
Background
- Authors
- Boschi, D., Branca, S., De Martini, F., & Hardy, L.
- Affiliations
- Istituto Nazionale di Fisica Nucleare (IT)
- ORCID
- Hardy, L.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 1997-10-13
- Volume
- 79
- Issue
- 15
- Pages
- 2755-2758
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2057414071
- Cited by
- 170
- References
- 1
- Citations by year
- 2026: 1 · 2025: 3 · 2024: 8 · 2023: 7 · 2022: 2 · 2021: 8 · 2020: 10 · 2019: 30 · 2018: 5 · 2017: 4 · 2016: 3 · 2015: 3 · 2014: 8 · 2013: 5 · 2012: 21
- FWCI
- 2.00
- Type
- journal article
- Language
- en
- Open access
- Licence
- Locations
- Physical Review Letters (publishedVersion)
- INFM-OAR (INFN Catania) (submittedVersion, other-oa)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Noncommutative and Quantum Gravity Theories
- Keywords
- local realism, Bell nonlocality, spin-1/2 particles, polarization-entangled photons, local hidden variable theories
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
