{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:SQ3EKQW3VTHZLHAT5AOVJ5ZY2C","short_pith_number":"pith:SQ3EKQW3","schema_version":"1.0","canonical_sha256":"94364542dbaccf959c13e81d54f738d095364b0b214261ed194040757187793c","source":{"kind":"arxiv","id":"1603.00043","version":1},"attestation_state":"computed","paper":{"title":"Witnesses of causal nonseparability: an introduction and a few case studies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Cyril Branciard","submitted_at":"2016-02-29T21:14:59Z","abstract_excerpt":"It was recently realised that quantum theory allows for so-called causally nonseparable processes, which are incompatible with any definite causal order. This was first suggested on a rather abstract level by the formalism of process matrices, which only assumes that quantum theory holds locally in some observers' laboratories, but does not impose a global causal structure; it was then shown, on a more practical level, that the quantum switch---a new resource for quantum computation that goes beyond causally ordered circuits---provided precisely a physical example of a causally nonseparable pr"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1603.00043","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-02-29T21:14:59Z","cross_cats_sorted":[],"title_canon_sha256":"8f72b07e658567643093c69611952c711e6fc5d52f8dddeea2adac4075686d93","abstract_canon_sha256":"20a2d4e84ccc83566916970a15e1245e97c8dbe16befdf80e6acc481864acfe9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:14:28.827152Z","signature_b64":"4X1spZp0GwbZkxcX3D6qAjT7GJcVxu2WZfB9vonebuD8ortq8E39i5B/gLnu4BGYIoSWNZ3jf4e9X/QswDe6Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94364542dbaccf959c13e81d54f738d095364b0b214261ed194040757187793c","last_reissued_at":"2026-05-18T01:14:28.826596Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:14:28.826596Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Witnesses of causal nonseparability: an introduction and a few case studies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Cyril Branciard","submitted_at":"2016-02-29T21:14:59Z","abstract_excerpt":"It was recently realised that quantum theory allows for so-called causally nonseparable processes, which are incompatible with any definite causal order. This was first suggested on a rather abstract level by the formalism of process matrices, which only assumes that quantum theory holds locally in some observers' laboratories, but does not impose a global causal structure; it was then shown, on a more practical level, that the quantum switch---a new resource for quantum computation that goes beyond causally ordered circuits---provided precisely a physical example of a causally nonseparable pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.00043","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1603.00043","created_at":"2026-05-18T01:14:28.826680+00:00"},{"alias_kind":"arxiv_version","alias_value":"1603.00043v1","created_at":"2026-05-18T01:14:28.826680+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.00043","created_at":"2026-05-18T01:14:28.826680+00:00"},{"alias_kind":"pith_short_12","alias_value":"SQ3EKQW3VTHZ","created_at":"2026-05-18T12:30:44.179134+00:00"},{"alias_kind":"pith_short_16","alias_value":"SQ3EKQW3VTHZLHAT","created_at":"2026-05-18T12:30:44.179134+00:00"},{"alias_kind":"pith_short_8","alias_value":"SQ3EKQW3","created_at":"2026-05-18T12:30:44.179134+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C","json":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C.json","graph_json":"https://pith.science/api/pith-number/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/graph.json","events_json":"https://pith.science/api/pith-number/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/events.json","paper":"https://pith.science/paper/SQ3EKQW3"},"agent_actions":{"view_html":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C","download_json":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C.json","view_paper":"https://pith.science/paper/SQ3EKQW3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1603.00043&json=true","fetch_graph":"https://pith.science/api/pith-number/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/graph.json","fetch_events":"https://pith.science/api/pith-number/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/action/storage_attestation","attest_author":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/action/author_attestation","sign_citation":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/action/citation_signature","submit_replication":"https://pith.science/pith/SQ3EKQW3VTHZLHAT5AOVJ5ZY2C/action/replication_record"}},"created_at":"2026-05-18T01:14:28.826680+00:00","updated_at":"2026-05-18T01:14:28.826680+00:00"}