{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:KWB4ZNSJBMGRAWDN3HZR2WIZN3","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":"6aa01107517aa82c9e30ce7c8496bcb3ba5809f24896efcf3c2b88b4d916ac7a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-06-04T14:06:35Z","title_canon_sha256":"9a1ff6d80eaf93664bb5ae8dcb0f01203f2f5ae61c243e4cb5af0839f4842d49"},"schema_version":"1.0","source":{"id":"1306.0796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.0796","created_at":"2026-05-18T01:49:33Z"},{"alias_kind":"arxiv_version","alias_value":"1306.0796v1","created_at":"2026-05-18T01:49:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.0796","created_at":"2026-05-18T01:49:33Z"},{"alias_kind":"pith_short_12","alias_value":"KWB4ZNSJBMGR","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_16","alias_value":"KWB4ZNSJBMGRAWDN","created_at":"2026-05-18T12:27:51Z"},{"alias_kind":"pith_short_8","alias_value":"KWB4ZNSJ","created_at":"2026-05-18T12:27:51Z"}],"graph_snapshots":[{"event_id":"sha256:370ed41c549e1f6fb75444e2dee8f46a0c99bd3e01724e976c7bebdf2653a295","target":"graph","created_at":"2026-05-18T01:49:33Z","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":"The majority of silicon photonics is built on silicon-on-insulator (SOI) wafers while the majority of electronics, including CPUs and memory, are built on bulk silicon wafers, limiting broader acceptance of silicon photonics. This discrepancy is a result of silicon photonics's requirement for a single-crystalline silicon (c-Si) layer and a thick undercladding for optical guiding that bulk silicon wafers to not provide. While the undercladding problem can be partially addressed by substrate removal techniques, the complexity of co-integrating photonics with state-of-the-art transistors and real","authors_text":"Michael O. Thompson, Michal Lipson, Yoon Ho Daniel Lee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-06-04T14:06:35Z","title":"Deposited low temperature silicon GHz modulator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.0796","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":"sha256:897d11b6e5d99e8bff3991f769c1fb1f56c19dfd8cd2453154b5253c29d72901","target":"record","created_at":"2026-05-18T01:49:33Z","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":"6aa01107517aa82c9e30ce7c8496bcb3ba5809f24896efcf3c2b88b4d916ac7a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-06-04T14:06:35Z","title_canon_sha256":"9a1ff6d80eaf93664bb5ae8dcb0f01203f2f5ae61c243e4cb5af0839f4842d49"},"schema_version":"1.0","source":{"id":"1306.0796","kind":"arxiv","version":1}},"canonical_sha256":"5583ccb6490b0d10586dd9f31d59196ef89eba0a639d77dda0485b7d3a15f1d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5583ccb6490b0d10586dd9f31d59196ef89eba0a639d77dda0485b7d3a15f1d2","first_computed_at":"2026-05-18T01:49:33.050862Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:49:33.050862Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rUeiXfITuEKvzLtEFA25pPY3vl8e5Mas2oifGxQq2rCo7rqpIdg1BANp4czEmJDjnkHfjRC7EYlt1Y1UdXQBDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:49:33.051394Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.0796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:897d11b6e5d99e8bff3991f769c1fb1f56c19dfd8cd2453154b5253c29d72901","sha256:370ed41c549e1f6fb75444e2dee8f46a0c99bd3e01724e976c7bebdf2653a295"],"state_sha256":"02946cb6b71bd68558a082240460fcd7b79008c0a6fa8ff92b36c925bffa397b"}