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Bell’s theorem, Aspect’s earlier tests, simultaneous photonic experiments, later replications and device-independent applications remain separate.", "domain": "Quantum mechanics" }, "sources": [ { "citation": "Hensen et al., loophole-free Bell inequality violation", "url": "https://doi.org/10.1038/nature15759" }, { "citation": "Crossmark record for Hensen Bell test", "url": "https://crossmark.crossref.org/dialog/?doi=10.1038%2Fnature15759" } ], "statement": "# Hensen and colleagues: an event-ready loophole-free Bell test\n\nReported an event-ready Bell experiment with electron spins separated by 1.3 kilometres, closing the stated detection and locality loopholes and rejecting the local-realist null in its analysis.\n\n## Scientific scope\n\nThe record is the exact 2015 Nature paper and its 245-trial statistical result. Bell’s theorem, Aspect’s earlier tests, simultaneous photonic experiments, later replications and device-independent applications remain separate.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nB. Hensen; H. Bernien; A. E. Dréau; A. Reiserer; N. Kalb; M. S. Blok; J. Ruitenberg; R. F. L. Vermeulen; R. N. Schouten; C. Abellán; W. Amaya; V. Pruneri; M. W. Mitchell; M. Markham; D. J. Twitchen; D. Elkouss; S. Wehner; T. H. Taminiau; R. Hanson\n\nThe named authors contributed to this scoped work; individual effort shares and later applications are not assigned by the byline.\n\n\n\n## Original sources\n\n- [Hensen et al., loophole-free Bell inequality violation](https://doi.org/10.1038/nature15759)\n- [Crossmark record for Hensen Bell test](https://crossmark.crossref.org/dialog/?doi=10.1038%2Fnature15759)\n", "summary": "Reported an event-ready Bell experiment with electron spins separated by 1.3 kilometres, closing the stated detection and locality loopholes and rejecting the local-realist null in its analysis.", "title": "Hensen and colleagues: an event-ready loophole-free Bell test" }, "record_id": "urn:uuid:d16cc3d1-48da-426f-a073-464c6e63a0da", "version": 1, "source_ref": { "record_id": "urn:uuid:d16cc3d1-48da-426f-a073-464c6e63a0da", "version": 1, "content_hash": "sha256:a1738a4a34112e7a18591526420ee41cbcf687c692afe18da644da9023e1ab9c" }, "export_view": "wrs-public-editorial-view-1", "public_view_hash": "sha256:45fc96b1a52bdd5837c1379b87ebf06719728340b5b46fe60e6b8a2b9e658ae9" }, "target": { "record_id": "urn:uuid:d16cc3d1-48da-426f-a073-464c6e63a0da", "version": 1, "content_hash": "sha256:a1738a4a34112e7a18591526420ee41cbcf687c692afe18da644da9023e1ab9c" }, "published_grade": { "profile": "wrs-published-grade-1", "edition": "2026-10-28.1", "id": "hensen-loophole-free-bell-test-2015", "entry_id": "hensen-loophole-free-bell-test-2015", "revision": 1, "title": "Hensen and colleagues: an event-ready loophole-free Bell test", "context": "Quantum foundations", "track": "Experimental test", "band": "A", "modifier": "+", "status": "PROVISIONAL_EDITORIAL", "assessed_on": "2026-09-25", "evidence_cutoff": "2026-09-25", "achievement_state": "SUPPORTED_SCOPED_RESULT", "what_changed": "A single experiment tested local-realist constraints without the major locality and detection loopholes.", "scope": "Nineteen-author 2015 experiment; Bell's theorem, prior tests and later replications separate.", "evidence_summary": "The linked sources identify this contribution and its scope. 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