{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:YPGSHQ44FLGGUSMLQJWBNERM4O","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":"5d54ed5265a842ec421599a24a981d5747d2b4e6dec816ba6992ff9cb5bd0b82","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-11T03:46:41Z","title_canon_sha256":"8bad175d053ec68f4fdc9d5740fc9f74005cb12cc89a359ac54d106549a1be3a"},"schema_version":"1.0","source":{"id":"1506.03539","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.03539","created_at":"2026-05-18T01:24:14Z"},{"alias_kind":"arxiv_version","alias_value":"1506.03539v2","created_at":"2026-05-18T01:24:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.03539","created_at":"2026-05-18T01:24:14Z"},{"alias_kind":"pith_short_12","alias_value":"YPGSHQ44FLGG","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"YPGSHQ44FLGGUSML","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"YPGSHQ44","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:297f16bdf70c95e125df9180af152c97da9a7782021c877cfa9af518151f1045","target":"graph","created_at":"2026-05-18T01:24:14Z","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"},"paper":{"abstract_excerpt":"A recent experiment [Lanting et al., PRX, (2014)] claimed to provide evidence of up to $8$-qubit entanglement in a D-Wave quantum annealing device. However, entanglement was measured using qubit tunneling spectroscopy, a technique that provides indirect access to the state of the system at intermediate times during the anneal by performing measurements at the end of the anneal with a probe qubit. In addition, an underlying assumption was that the quantum transverse-field Ising Hamiltonian, whose ground states are already highly entangled, is an appropriate model of the device, and not some oth","authors_text":"Daniel A. Lidar, Federico M. Spedalieri, Itay Hen, Tameem Albash","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-11T03:46:41Z","title":"Reexamination of the evidence for entanglement in the D-Wave processor"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.03539","kind":"arxiv","version":2},"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":"sha256:03afa014b93d5c8e69f9fe9e4f632de69c97113fbc1df308e767f1cf24082f7c","target":"record","created_at":"2026-05-18T01:24:14Z","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":"5d54ed5265a842ec421599a24a981d5747d2b4e6dec816ba6992ff9cb5bd0b82","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-06-11T03:46:41Z","title_canon_sha256":"8bad175d053ec68f4fdc9d5740fc9f74005cb12cc89a359ac54d106549a1be3a"},"schema_version":"1.0","source":{"id":"1506.03539","kind":"arxiv","version":2}},"canonical_sha256":"c3cd23c39c2acc6a498b826c16922ce386d004d24c214be3c27bc415aa6ad981","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c3cd23c39c2acc6a498b826c16922ce386d004d24c214be3c27bc415aa6ad981","first_computed_at":"2026-05-18T01:24:14.408221Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:24:14.408221Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QMJbxlbjltU9d1K2FrDGCpYpHF+9bbVJdFwIV6Lmii7Lb8MgYQrGbrSnQ4FPNjlbswpQeN27AjjSE/dvPUSuCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:24:14.408759Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.03539","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:03afa014b93d5c8e69f9fe9e4f632de69c97113fbc1df308e767f1cf24082f7c","sha256:297f16bdf70c95e125df9180af152c97da9a7782021c877cfa9af518151f1045"],"state_sha256":"4e04b6d65b2a6ea12be93ccae790a4954d286256e9fb1007f4050f4fa619c82b"}