{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PQ7XZ6HGILNCMGRPDG2O77B3RO","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"3ccf50942d670b471060a3d827db59d2933f3064b69c07e0aead0b0b64bc70b7","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T19:40:23Z","title_canon_sha256":"44324cc30ea65f3d867f9f247947248045a0fbd164bde1213866b66ee1993769"},"schema_version":"1.0","source":{"id":"2506.20796","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.20796","created_at":"2026-07-05T11:36:33Z"},{"alias_kind":"arxiv_version","alias_value":"2506.20796v3","created_at":"2026-07-05T11:36:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.20796","created_at":"2026-07-05T11:36:33Z"},{"alias_kind":"pith_short_12","alias_value":"PQ7XZ6HGILNC","created_at":"2026-07-05T11:36:33Z"},{"alias_kind":"pith_short_16","alias_value":"PQ7XZ6HGILNCMGRP","created_at":"2026-07-05T11:36:33Z"},{"alias_kind":"pith_short_8","alias_value":"PQ7XZ6HG","created_at":"2026-07-05T11:36:33Z"}],"graph_snapshots":[{"event_id":"sha256:b1bb35afb89d9e4c23df95e3dee724929c8efd66b6fae052660a1dba685cbae8","target":"graph","created_at":"2026-07-05T11:36:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2506.20796/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Violation of Bell inequalities is an essential requirement for many quantum information and communication protocols. In high-dimensional systems, Bell inequality tests face the challenge of implementing genuinely multi-outcome measurements, since the emulation of these with separate dichotomic projections opens a binarisation loophole that local hidden variable theories can exploit. Here we show that the joint spectral intensity of a two-photon entangled state contains access to the necessary multi-outcome measurements to overcome this obstacle and certify and violate a Bell inequality for hig","authors_text":"Abhinandan Bhattacharjee, Armin Tavakoli, Benjamin Brecht, Christine Silberhorn, Jonathan Leach, Kiki Dekkers, Laura Serino, Nicola DAlessandro","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T19:40:23Z","title":"Observing High-dimensional Bell Inequality Violations using Multi-Outcome Spectral Measurements"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.20796","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6142cf359ecc4ceafc9e11e879f465e61669466a0ff73874c647c95ca0950b63","target":"record","created_at":"2026-07-05T11:36:33Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"3ccf50942d670b471060a3d827db59d2933f3064b69c07e0aead0b0b64bc70b7","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-06-25T19:40:23Z","title_canon_sha256":"44324cc30ea65f3d867f9f247947248045a0fbd164bde1213866b66ee1993769"},"schema_version":"1.0","source":{"id":"2506.20796","kind":"arxiv","version":3}},"canonical_sha256":"7c3f7cf8e642da261a2f19b4effc3b8b90aa59b7714f3ed5f9585962edad7829","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c3f7cf8e642da261a2f19b4effc3b8b90aa59b7714f3ed5f9585962edad7829","first_computed_at":"2026-07-05T11:36:33.559186Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:36:33.559186Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uCeZykYLiTO/vY6MYOruA+l/o70Ys3vyrlSvWRPaW+7dYcdFUKQ9bNQzVqswICl0HLr6TLNz7A5mcWd0MhlFDw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:36:33.559689Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.20796","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6142cf359ecc4ceafc9e11e879f465e61669466a0ff73874c647c95ca0950b63","sha256:b1bb35afb89d9e4c23df95e3dee724929c8efd66b6fae052660a1dba685cbae8"],"state_sha256":"160f68f6a95560b3f4961a8bb1f6160b8645e6cadb414be039a7090f98f3de4c"}