{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:WQRDBWUR67UU3N7VIXPPHYNB5B","short_pith_number":"pith:WQRDBWUR","canonical_record":{"source":{"id":"1106.3002","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T03:28:42Z","cross_cats_sorted":[],"title_canon_sha256":"73abe1d5f8b46bdb80037af95371b003a3d4d7041af5b7e8378bef14a05ba3e9","abstract_canon_sha256":"06c141d1809efaa6fe373b36a013dd0b02120f6dd4d34a0025f84cb1170480c9"},"schema_version":"1.0"},"canonical_sha256":"b42230da91f7e94db7f545def3e1a1e849df61620b897e32cb7fdc7258723401","source":{"kind":"arxiv","id":"1106.3002","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.3002","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"arxiv_version","alias_value":"1106.3002v1","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.3002","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"pith_short_12","alias_value":"WQRDBWUR67UU","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WQRDBWUR67UU3N7V","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WQRDBWUR","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:WQRDBWUR67UU3N7VIXPPHYNB5B","target":"record","payload":{"canonical_record":{"source":{"id":"1106.3002","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T03:28:42Z","cross_cats_sorted":[],"title_canon_sha256":"73abe1d5f8b46bdb80037af95371b003a3d4d7041af5b7e8378bef14a05ba3e9","abstract_canon_sha256":"06c141d1809efaa6fe373b36a013dd0b02120f6dd4d34a0025f84cb1170480c9"},"schema_version":"1.0"},"canonical_sha256":"b42230da91f7e94db7f545def3e1a1e849df61620b897e32cb7fdc7258723401","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:19:55.177687Z","signature_b64":"NzvapaLilmj/5MYBbdEeX2gCGkHHHmFpS7/uIsUnbe5wOB39TFhxdDjJZkA1NE1/qW5hO2ppCbzZbOw4shx3Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b42230da91f7e94db7f545def3e1a1e849df61620b897e32cb7fdc7258723401","last_reissued_at":"2026-05-18T04:19:55.176933Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:19:55.176933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.3002","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:19:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iM1kiN0Rn1FkJC7/buiTVWV6Msbqzj7AJAaV7ey35ANdCYBvCqzIFTsevS7hv3cWdlxlW7JInIUetbNUhGlxCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:15:10.758559Z"},"content_sha256":"1f6a418906e48173c2c4a3903875dea91d65bf239c49ceeb02b4347452d11597","schema_version":"1.0","event_id":"sha256:1f6a418906e48173c2c4a3903875dea91d65bf239c49ceeb02b4347452d11597"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:WQRDBWUR67UU3N7VIXPPHYNB5B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low-threshold directional plasmon lasing assisted by spatially coherent surface plasmon polaritons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Anan Fang, C.T. Chan, Hong Chen, Hongqiang Li, Wei Li, Xunya Jiang, Yang Cao, Zeyong Wei","submitted_at":"2011-06-08T03:28:42Z","abstract_excerpt":"We theoretically propose directional, low-threshold plasmon lasing in both the near-infrared and visible wavelengths by utilizing spatially coherent surface plasmon polaritons on a meta-surface. The gain strength required for threshold lasing can be tuned down to a large extent through compatible structural parameters. Our calculations show that no more than 65 cm$^{-1}$ at 193.5 THz (1.55 $\\mu$m) or 267 cm$^{-1}$at 474THz (0.633 $\\mu$m) of gain coefficient is sufficient to compensate for the dissipation of metal films for threshold lasing; these values are smaller than any reported studies at"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.3002","kind":"arxiv","version":1},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:19:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BhctLViAYQjJxtZl/mhQLVZO0ogFUgMZYvpetoIdOb65fFKpqiClURQ7kvLacWOQpE0OCqwds/QZ7FGXZg4nAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T10:15:10.758914Z"},"content_sha256":"941acc297832de91a00493bdd7fa6f432b593b5a310c159a7551f0d6871940c3","schema_version":"1.0","event_id":"sha256:941acc297832de91a00493bdd7fa6f432b593b5a310c159a7551f0d6871940c3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WQRDBWUR67UU3N7VIXPPHYNB5B/bundle.json","state_url":"https://pith.science/pith/WQRDBWUR67UU3N7VIXPPHYNB5B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WQRDBWUR67UU3N7VIXPPHYNB5B/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-27T10:15:10Z","links":{"resolver":"https://pith.science/pith/WQRDBWUR67UU3N7VIXPPHYNB5B","bundle":"https://pith.science/pith/WQRDBWUR67UU3N7VIXPPHYNB5B/bundle.json","state":"https://pith.science/pith/WQRDBWUR67UU3N7VIXPPHYNB5B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WQRDBWUR67UU3N7VIXPPHYNB5B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WQRDBWUR67UU3N7VIXPPHYNB5B","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":"06c141d1809efaa6fe373b36a013dd0b02120f6dd4d34a0025f84cb1170480c9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T03:28:42Z","title_canon_sha256":"73abe1d5f8b46bdb80037af95371b003a3d4d7041af5b7e8378bef14a05ba3e9"},"schema_version":"1.0","source":{"id":"1106.3002","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.3002","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"arxiv_version","alias_value":"1106.3002v1","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.3002","created_at":"2026-05-18T04:19:55Z"},{"alias_kind":"pith_short_12","alias_value":"WQRDBWUR67UU","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WQRDBWUR67UU3N7V","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WQRDBWUR","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:941acc297832de91a00493bdd7fa6f432b593b5a310c159a7551f0d6871940c3","target":"graph","created_at":"2026-05-18T04:19:55Z","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":"We theoretically propose directional, low-threshold plasmon lasing in both the near-infrared and visible wavelengths by utilizing spatially coherent surface plasmon polaritons on a meta-surface. The gain strength required for threshold lasing can be tuned down to a large extent through compatible structural parameters. Our calculations show that no more than 65 cm$^{-1}$ at 193.5 THz (1.55 $\\mu$m) or 267 cm$^{-1}$at 474THz (0.633 $\\mu$m) of gain coefficient is sufficient to compensate for the dissipation of metal films for threshold lasing; these values are smaller than any reported studies at","authors_text":"Anan Fang, C.T. Chan, Hong Chen, Hongqiang Li, Wei Li, Xunya Jiang, Yang Cao, Zeyong Wei","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T03:28:42Z","title":"Low-threshold directional plasmon lasing assisted by spatially coherent surface plasmon polaritons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.3002","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":"sha256:1f6a418906e48173c2c4a3903875dea91d65bf239c49ceeb02b4347452d11597","target":"record","created_at":"2026-05-18T04:19:55Z","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":"06c141d1809efaa6fe373b36a013dd0b02120f6dd4d34a0025f84cb1170480c9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-06-08T03:28:42Z","title_canon_sha256":"73abe1d5f8b46bdb80037af95371b003a3d4d7041af5b7e8378bef14a05ba3e9"},"schema_version":"1.0","source":{"id":"1106.3002","kind":"arxiv","version":1}},"canonical_sha256":"b42230da91f7e94db7f545def3e1a1e849df61620b897e32cb7fdc7258723401","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b42230da91f7e94db7f545def3e1a1e849df61620b897e32cb7fdc7258723401","first_computed_at":"2026-05-18T04:19:55.176933Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:19:55.176933Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NzvapaLilmj/5MYBbdEeX2gCGkHHHmFpS7/uIsUnbe5wOB39TFhxdDjJZkA1NE1/qW5hO2ppCbzZbOw4shx3Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:19:55.177687Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.3002","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f6a418906e48173c2c4a3903875dea91d65bf239c49ceeb02b4347452d11597","sha256:941acc297832de91a00493bdd7fa6f432b593b5a310c159a7551f0d6871940c3"],"state_sha256":"1b49d99ac410ee9aa91d62bf86e460686894dc426e77930973b5c3151a48251f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J6CEpJVL4fCQ6RMFy76NJe4iknjRN4/JNOBxnI8Llz7zP4SYAkJoOPq5kQOT3qvjPJUYpqYaibt8DHcpuwETBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T10:15:10.761374Z","bundle_sha256":"40e86aba629a5956524b4ff0d9891c556e96b6c5478666f1e61257fdec6f3c0e"}}