{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:OG75CNNLUWNX2XQXNGXDUJ2DBS","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":"314aa44d5d9d4979c05073f5139008b70b4e52b6d2109d422b219ddcfd788a51","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T15:18:12Z","title_canon_sha256":"06559a9401e09b278fbd5a3aa52c583c7edb5d6b3f7253646b30eba11680ee4f"},"schema_version":"1.0","source":{"id":"2005.07060","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.07060","created_at":"2026-07-05T01:38:18Z"},{"alias_kind":"arxiv_version","alias_value":"2005.07060v1","created_at":"2026-07-05T01:38:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.07060","created_at":"2026-07-05T01:38:18Z"},{"alias_kind":"pith_short_12","alias_value":"OG75CNNLUWNX","created_at":"2026-07-05T01:38:18Z"},{"alias_kind":"pith_short_16","alias_value":"OG75CNNLUWNX2XQX","created_at":"2026-07-05T01:38:18Z"},{"alias_kind":"pith_short_8","alias_value":"OG75CNNL","created_at":"2026-07-05T01:38:18Z"}],"graph_snapshots":[{"event_id":"sha256:a7777b89e9e4a52ce82a48a1dba48f460b4105f80e367981fa6c99dec2284737","target":"graph","created_at":"2026-07-05T01:38:18Z","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/2005.07060/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Sources of entangled electromagnetic radiation are a cornerstone in quantum information processing and offer unique opportunities for the study of quantum many-body physics in a controlled experimental setting. While multi-mode entangled states of radiation have been generated in various platforms, all previous experiments are either probabilistic or restricted to generate specific types of states with a moderate entanglement length. Here, we demonstrate the fully deterministic generation of purely photonic entangled states such as the cluster, GHZ, and W state by sequentially emitting microwa","authors_text":"Abdulkadir Akin, Adrian Copetudo, Andreas Wallraff, Arne Wulff, Christopher Eichler, Daniel Malz, Graham J. Norris, Jean-Claude Besse, J. Ignacio Cirac, Kevin Reuer, Lucien Wernli, Michele C. Collodo, Mihai Gabureac, Paul Magnard","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T15:18:12Z","title":"Realizing a Deterministic Source of Multipartite-Entangled Photonic Qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.07060","kind":"arxiv","version":1},"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:e15c987af9e3b5b2d7a59efbc07e10d562d45a224aff9770b0048575117c40c2","target":"record","created_at":"2026-07-05T01:38:18Z","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":"314aa44d5d9d4979c05073f5139008b70b4e52b6d2109d422b219ddcfd788a51","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-14T15:18:12Z","title_canon_sha256":"06559a9401e09b278fbd5a3aa52c583c7edb5d6b3f7253646b30eba11680ee4f"},"schema_version":"1.0","source":{"id":"2005.07060","kind":"arxiv","version":1}},"canonical_sha256":"71bfd135aba59b7d5e1769ae3a27430c86049b87cc2e230c4c9d7e160c85f54d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71bfd135aba59b7d5e1769ae3a27430c86049b87cc2e230c4c9d7e160c85f54d","first_computed_at":"2026-07-05T01:38:18.592883Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:38:18.592883Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TEGvxa1cYrrP641Q5Uh9/qJHUjk0xSX81WrCdAJGP00Rd6OiTQfjLOKNPlP+J3GPsf9MHtkVRXT71xs4AvM9AQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:38:18.593503Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.07060","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e15c987af9e3b5b2d7a59efbc07e10d562d45a224aff9770b0048575117c40c2","sha256:a7777b89e9e4a52ce82a48a1dba48f460b4105f80e367981fa6c99dec2284737"],"state_sha256":"69631eb5e8fbce94621b4ec54fdb287752336d822096eec3e29934689980df80"}