{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:LHXVDUSK2AFHVYMM2OLQYG3VIL","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":"41a1f557b642a7964c10fe63659579a408695c23468a0efdfe1fe9c33b3c22bd","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-03-09T18:56:55Z","title_canon_sha256":"b1a4ca5733f8c9abdfad98a19b387b458bb5f9666a72189787a7d744479fc189"},"schema_version":"1.0","source":{"id":"2103.05629","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.05629","created_at":"2026-07-05T03:52:12Z"},{"alias_kind":"arxiv_version","alias_value":"2103.05629v2","created_at":"2026-07-05T03:52:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.05629","created_at":"2026-07-05T03:52:12Z"},{"alias_kind":"pith_short_12","alias_value":"LHXVDUSK2AFH","created_at":"2026-07-05T03:52:12Z"},{"alias_kind":"pith_short_16","alias_value":"LHXVDUSK2AFHVYMM","created_at":"2026-07-05T03:52:12Z"},{"alias_kind":"pith_short_8","alias_value":"LHXVDUSK","created_at":"2026-07-05T03:52:12Z"}],"graph_snapshots":[{"event_id":"sha256:f9b0f265983877ad92c32856c0620fa2cd5f22de1ef09447470e10a5087a2781","target":"graph","created_at":"2026-07-05T03:52:12Z","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/2103.05629/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that the nonlinear stochastic dynamics of a measurement-feedback-based coherent Ising machine (MFB-CIM) in the presence of quantum noise can be exploited to sample degenerate ground and low-energy spin configurations of the Ising model. We formulate a general discrete-time Gaussian-state model of the MFB-CIM which faithfully captures the nonlinear dynamics present at and above system threshold. This model overcomes the limitations of both mean-field models, which neglect quantum noise, and continuous-time models, which assume long photon lifetimes. Numerical simulations of our model sh","authors_text":"Edwin Ng, Hideo Mabuchi, Peter L. McMahon, Satoshi Kako, Tatsuhiro Onodera, Yoshihisa Yamamoto","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-03-09T18:56:55Z","title":"Efficient sampling of ground and low-energy Ising spin configurations with a coherent Ising machine"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.05629","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":"sha256:34ac6688bb3ceb82c18d4c711dfa432b7f5e1d79b9ccfd7f08c18b3d44b7c0c8","target":"record","created_at":"2026-07-05T03:52:12Z","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":"41a1f557b642a7964c10fe63659579a408695c23468a0efdfe1fe9c33b3c22bd","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-03-09T18:56:55Z","title_canon_sha256":"b1a4ca5733f8c9abdfad98a19b387b458bb5f9666a72189787a7d744479fc189"},"schema_version":"1.0","source":{"id":"2103.05629","kind":"arxiv","version":2}},"canonical_sha256":"59ef51d24ad00a7ae18cd3970c1b7542d18715dc370877dca4f7b30d2a364bb9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"59ef51d24ad00a7ae18cd3970c1b7542d18715dc370877dca4f7b30d2a364bb9","first_computed_at":"2026-07-05T03:52:12.296017Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:52:12.296017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3Mzji79QONbGH1nRWO9LJmFSWQDKGf41zJPt6yRoBw3sMIzwcCr4YJouqy39bj0nY1X2LEuw6e/xedsHd3ZtCw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:52:12.296493Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.05629","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34ac6688bb3ceb82c18d4c711dfa432b7f5e1d79b9ccfd7f08c18b3d44b7c0c8","sha256:f9b0f265983877ad92c32856c0620fa2cd5f22de1ef09447470e10a5087a2781"],"state_sha256":"9814081e041026601f21bb8d2e6ec503cd6facb21a8864aebaf3a2db923dd21f"}