{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:NATKHIYH7EE2G53DL62GCQNZC4","short_pith_number":"pith:NATKHIYH","schema_version":"1.0","canonical_sha256":"6826a3a307f909a377635fb46141b9170d5c96f6e8887266fcbbc13df50f9f43","source":{"kind":"arxiv","id":"1706.02454","version":2},"attestation_state":"computed","paper":{"title":"A Quantum Model for Coherent Ising Machines: Discrete-time Measurement Feedback Formulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Atsushi Yamamura, Kazuyuki Aihara, Yoshihisa Yamamoto","submitted_at":"2017-06-08T05:54:27Z","abstract_excerpt":"Recently, the coherent Ising machine (CIM) as a degenerate optical parametric oscillator (DOPO) network has been researched to solve Ising combinatorial optimization problems. We formulate a theoretical model for the CIM with discrete-time measurement feedback processes, and perform numerical simulations for the simplest network, composed of two degenerate optical parametric oscillator pulses with the anti-ferromagnetic mutual coupling. We evaluate the extent to which quantum coherence exists during the optimization process."},"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":"1706.02454","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-06-08T05:54:27Z","cross_cats_sorted":[],"title_canon_sha256":"759cc616faf2ec8e15b04ebda68c591b8c79699ce97f58dbfb69c97899ec53e3","abstract_canon_sha256":"fb31310a574236b03a52794efa9647b9a620867ee45e314744285d4930978adc"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:29:55.374298Z","signature_b64":"O9njzOO/7cz1z3pO+SZEAfi87V0niQyYekbG7R9pEuSLwHw4Xk0jKAqi2v0UavdmaRVlrPseqTc0pdmjbTaWBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6826a3a307f909a377635fb46141b9170d5c96f6e8887266fcbbc13df50f9f43","last_reissued_at":"2026-05-18T00:29:55.373682Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:29:55.373682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Quantum Model for Coherent Ising Machines: Discrete-time Measurement Feedback Formulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Atsushi Yamamura, Kazuyuki Aihara, Yoshihisa Yamamoto","submitted_at":"2017-06-08T05:54:27Z","abstract_excerpt":"Recently, the coherent Ising machine (CIM) as a degenerate optical parametric oscillator (DOPO) network has been researched to solve Ising combinatorial optimization problems. We formulate a theoretical model for the CIM with discrete-time measurement feedback processes, and perform numerical simulations for the simplest network, composed of two degenerate optical parametric oscillator pulses with the anti-ferromagnetic mutual coupling. We evaluate the extent to which quantum coherence exists during the optimization process."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.02454","kind":"arxiv","version":2},"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":"1706.02454","created_at":"2026-05-18T00:29:55.373763+00:00"},{"alias_kind":"arxiv_version","alias_value":"1706.02454v2","created_at":"2026-05-18T00:29:55.373763+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.02454","created_at":"2026-05-18T00:29:55.373763+00:00"},{"alias_kind":"pith_short_12","alias_value":"NATKHIYH7EE2","created_at":"2026-05-18T12:31:31.346846+00:00"},{"alias_kind":"pith_short_16","alias_value":"NATKHIYH7EE2G53D","created_at":"2026-05-18T12:31:31.346846+00:00"},{"alias_kind":"pith_short_8","alias_value":"NATKHIYH","created_at":"2026-05-18T12:31:31.346846+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/NATKHIYH7EE2G53DL62GCQNZC4","json":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4.json","graph_json":"https://pith.science/api/pith-number/NATKHIYH7EE2G53DL62GCQNZC4/graph.json","events_json":"https://pith.science/api/pith-number/NATKHIYH7EE2G53DL62GCQNZC4/events.json","paper":"https://pith.science/paper/NATKHIYH"},"agent_actions":{"view_html":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4","download_json":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4.json","view_paper":"https://pith.science/paper/NATKHIYH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1706.02454&json=true","fetch_graph":"https://pith.science/api/pith-number/NATKHIYH7EE2G53DL62GCQNZC4/graph.json","fetch_events":"https://pith.science/api/pith-number/NATKHIYH7EE2G53DL62GCQNZC4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4/action/storage_attestation","attest_author":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4/action/author_attestation","sign_citation":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4/action/citation_signature","submit_replication":"https://pith.science/pith/NATKHIYH7EE2G53DL62GCQNZC4/action/replication_record"}},"created_at":"2026-05-18T00:29:55.373763+00:00","updated_at":"2026-05-18T00:29:55.373763+00:00"}