{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MY6M4NLWTERZNM66YEOY7HO6GY","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":"f81f23b75a9df455f7c8d18e2692bbd792ae77a1c6af1952c050c366471370e5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-02-06T09:50:06Z","title_canon_sha256":"161ea19a764e7ed0efbb6da2a97cda5dfb01e049df212aa51e92ba21faba8e35"},"schema_version":"1.0","source":{"id":"2602.06544","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2602.06544","created_at":"2026-08-05T01:36:22Z"},{"alias_kind":"arxiv_version","alias_value":"2602.06544v1","created_at":"2026-08-05T01:36:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2602.06544","created_at":"2026-08-05T01:36:22Z"},{"alias_kind":"pith_short_12","alias_value":"MY6M4NLWTERZ","created_at":"2026-08-05T01:36:22Z"},{"alias_kind":"pith_short_16","alias_value":"MY6M4NLWTERZNM66","created_at":"2026-08-05T01:36:22Z"},{"alias_kind":"pith_short_8","alias_value":"MY6M4NLW","created_at":"2026-08-05T01:36:22Z"}],"graph_snapshots":[{"event_id":"sha256:1afc00a865fbb5718d21038fd7f971dc3ab6dd4a6758379009bb4959ee7c4cd7","target":"graph","created_at":"2026-08-05T01:36:22Z","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/2602.06544/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Universal quantum computing requires an architecture that supports both linear circuits and, crucially, strong nonlinear resources. For quantum photonic systems, integrating such nonlinearities with scalable linear circuitry has been a major bottleneck, leaving most optical experiments without nonlinear operations and, consequently, incapable of achieving universality. Here, we report an extensible photonic computer that supports a universal gate set by seamlessly combining fully programmable, scalable linear optical networks with integrated nonlinear modules. This platform enables a broad ran","authors_text":"Dayne Marcus D. Lopena, Ewan Mer, Gerard J. Machado, Guang Yang, Ian A. Walmsley, Jinzhao Sun, Kuan-Cheng Chen, Mingti Zhou, M. S. Kim, Raj B. Patel, Roberto Bondesan, Runxia Tao, Shana H. Winston, Shang Yu, Vlatko Vedral, Yazeed K. Alwehaibi, Ying Dong, Zhenghao Li, Zhi-Huai Yang, Zi-Cheng Zhang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-02-06T09:50:06Z","title":"Extensible universal photonic quantum computing with nonlinearity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2602.06544","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:b9443fda414ca1969f95516c474c63ebafd8d87bb05b2400e377760968461ee3","target":"record","created_at":"2026-08-05T01:36:22Z","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":"f81f23b75a9df455f7c8d18e2692bbd792ae77a1c6af1952c050c366471370e5","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-02-06T09:50:06Z","title_canon_sha256":"161ea19a764e7ed0efbb6da2a97cda5dfb01e049df212aa51e92ba21faba8e35"},"schema_version":"1.0","source":{"id":"2602.06544","kind":"arxiv","version":1}},"canonical_sha256":"663cce3576992396b3dec11d8f9dde361edcce979a3eabfeb7a57216d63f69d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"663cce3576992396b3dec11d8f9dde361edcce979a3eabfeb7a57216d63f69d2","first_computed_at":"2026-08-05T01:36:22.557449Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T01:36:22.557449Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QlrbyPwlbtSVkYzlNGQ+VU2sZqn9XXXoPmcMkDT4scLL7FvhYj3bImmsUwBu8qMOOpVzb9+nGcD0FTahCo4GCw==","signature_status":"signed_v1","signed_at":"2026-08-05T01:36:22.558999Z","signed_message":"canonical_sha256_bytes"},"source_id":"2602.06544","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b9443fda414ca1969f95516c474c63ebafd8d87bb05b2400e377760968461ee3","sha256:1afc00a865fbb5718d21038fd7f971dc3ab6dd4a6758379009bb4959ee7c4cd7"],"state_sha256":"3d2f3f4da3e670ec5941d5e71572f5ddae14351507e67b7704969c7fa990a08b"}