{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IECMV444APZGKWN3VVRA4OL4ER","short_pith_number":"pith:IECMV444","canonical_record":{"source":{"id":"1908.07598","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-20T20:28:25Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f422bc1a286f600d2b55420b4fee511b9d2be01778f149725c76cebf059eafed","abstract_canon_sha256":"462c3b8dc4a23c1a259e7e2c1a00f8408d0b8c1e3f34e7a1078863d253e8afe3"},"schema_version":"1.0"},"canonical_sha256":"4104caf39c03f26559bbad620e397c2455fb711d2a7b018f276b59d1e8c69a55","source":{"kind":"arxiv","id":"1908.07598","version":6},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.07598","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"arxiv_version","alias_value":"1908.07598v6","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07598","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"pith_short_12","alias_value":"IECMV444APZG","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"pith_short_16","alias_value":"IECMV444APZGKWN3","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"pith_short_8","alias_value":"IECMV444","created_at":"2026-07-05T01:02:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IECMV444APZGKWN3VVRA4OL4ER","target":"record","payload":{"canonical_record":{"source":{"id":"1908.07598","kind":"arxiv","version":6},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-20T20:28:25Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"f422bc1a286f600d2b55420b4fee511b9d2be01778f149725c76cebf059eafed","abstract_canon_sha256":"462c3b8dc4a23c1a259e7e2c1a00f8408d0b8c1e3f34e7a1078863d253e8afe3"},"schema_version":"1.0"},"canonical_sha256":"4104caf39c03f26559bbad620e397c2455fb711d2a7b018f276b59d1e8c69a55","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:02:39.117067Z","signature_b64":"Uw+j5pc3vryVwT7DYaCNmaSGFmSxNCw47b14xcyfO+z3EhoAqeQo7JU2tEUcmuhJvqC9FabafSnDRfo9r7q8DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4104caf39c03f26559bbad620e397c2455fb711d2a7b018f276b59d1e8c69a55","last_reissued_at":"2026-07-05T01:02:39.116600Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:02:39.116600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.07598","source_version":6,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:02:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wgqN2uiFzmXgkNoaKRflUeX7DXNEfOCONhXIUO+OyUqsseCioSbefBXJTgybA2+6U0wqgMDgmkOv1m6xiBcTAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:09:54.660062Z"},"content_sha256":"296af5005cfefe6b1721f7c4a84852d7b2bc1bd7a7577c081311815161a43e0b","schema_version":"1.0","event_id":"sha256:296af5005cfefe6b1721f7c4a84852d7b2bc1bd7a7577c081311815161a43e0b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IECMV444APZGKWN3VVRA4OL4ER","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near-unity light absorption in a monolayer WS2 van der Waals heterostructure cavity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.optics","authors_text":"Andr\\'e J. Chaves, Bernat Terr\\'es, Bettina Frank, Daniel A. Rhodes, Frank Koppens, Harald Giessen, Itai Epstein, James C. Hone, Kenji Watanabe, Nuno M. R. Peres, Sefaattin Tongay, Takashi Taniguchi, Valentin Zimmermann, Varun-Varma Pusapati, Ying Qin","submitted_at":"2019-08-20T20:28:25Z","abstract_excerpt":"Excitons in monolayer transition-metal-dichalcogenides (TMDs) dominate their optical response and exhibit strong light-matter interactions with lifetime-limited emission. While various approaches have been applied to enhance light-exciton interactions in TMDs, the achieved strength have been far below unity, and a complete picture of its underlying physical mechanisms and fundamental limits has not been provided. Here, we introduce a TMD-based van der Waals heterostructure cavity that provides near-unity excitonic absorption, and emission of excitonic complexes that are observed at ultra-low e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07598","kind":"arxiv","version":6},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.07598/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T01:02:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gcjB366qglZBWT20fsOYbFtSPO0X9/Rcin1NSsWJh1w7SRvFbydjUUj4RQ22oKZgATOSfRO3HaJCN/gdbzxQDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T06:09:54.660538Z"},"content_sha256":"d7917d5c5e0a7db489612848a54f5c11dbb11db9161baa6078670e0252848964","schema_version":"1.0","event_id":"sha256:d7917d5c5e0a7db489612848a54f5c11dbb11db9161baa6078670e0252848964"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IECMV444APZGKWN3VVRA4OL4ER/bundle.json","state_url":"https://pith.science/pith/IECMV444APZGKWN3VVRA4OL4ER/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IECMV444APZGKWN3VVRA4OL4ER/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":"2026-08-15T06:09:54Z","links":{"resolver":"https://pith.science/pith/IECMV444APZGKWN3VVRA4OL4ER","bundle":"https://pith.science/pith/IECMV444APZGKWN3VVRA4OL4ER/bundle.json","state":"https://pith.science/pith/IECMV444APZGKWN3VVRA4OL4ER/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IECMV444APZGKWN3VVRA4OL4ER/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IECMV444APZGKWN3VVRA4OL4ER","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":"462c3b8dc4a23c1a259e7e2c1a00f8408d0b8c1e3f34e7a1078863d253e8afe3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-20T20:28:25Z","title_canon_sha256":"f422bc1a286f600d2b55420b4fee511b9d2be01778f149725c76cebf059eafed"},"schema_version":"1.0","source":{"id":"1908.07598","kind":"arxiv","version":6}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.07598","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"arxiv_version","alias_value":"1908.07598v6","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.07598","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"pith_short_12","alias_value":"IECMV444APZG","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"pith_short_16","alias_value":"IECMV444APZGKWN3","created_at":"2026-07-05T01:02:39Z"},{"alias_kind":"pith_short_8","alias_value":"IECMV444","created_at":"2026-07-05T01:02:39Z"}],"graph_snapshots":[{"event_id":"sha256:d7917d5c5e0a7db489612848a54f5c11dbb11db9161baa6078670e0252848964","target":"graph","created_at":"2026-07-05T01:02:39Z","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/1908.07598/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Excitons in monolayer transition-metal-dichalcogenides (TMDs) dominate their optical response and exhibit strong light-matter interactions with lifetime-limited emission. While various approaches have been applied to enhance light-exciton interactions in TMDs, the achieved strength have been far below unity, and a complete picture of its underlying physical mechanisms and fundamental limits has not been provided. Here, we introduce a TMD-based van der Waals heterostructure cavity that provides near-unity excitonic absorption, and emission of excitonic complexes that are observed at ultra-low e","authors_text":"Andr\\'e J. Chaves, Bernat Terr\\'es, Bettina Frank, Daniel A. Rhodes, Frank Koppens, Harald Giessen, Itai Epstein, James C. Hone, Kenji Watanabe, Nuno M. R. Peres, Sefaattin Tongay, Takashi Taniguchi, Valentin Zimmermann, Varun-Varma Pusapati, Ying Qin","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-20T20:28:25Z","title":"Near-unity light absorption in a monolayer WS2 van der Waals heterostructure cavity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.07598","kind":"arxiv","version":6},"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":"sha256:296af5005cfefe6b1721f7c4a84852d7b2bc1bd7a7577c081311815161a43e0b","target":"record","created_at":"2026-07-05T01:02:39Z","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":"462c3b8dc4a23c1a259e7e2c1a00f8408d0b8c1e3f34e7a1078863d253e8afe3","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-08-20T20:28:25Z","title_canon_sha256":"f422bc1a286f600d2b55420b4fee511b9d2be01778f149725c76cebf059eafed"},"schema_version":"1.0","source":{"id":"1908.07598","kind":"arxiv","version":6}},"canonical_sha256":"4104caf39c03f26559bbad620e397c2455fb711d2a7b018f276b59d1e8c69a55","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4104caf39c03f26559bbad620e397c2455fb711d2a7b018f276b59d1e8c69a55","first_computed_at":"2026-07-05T01:02:39.116600Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:02:39.116600Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Uw+j5pc3vryVwT7DYaCNmaSGFmSxNCw47b14xcyfO+z3EhoAqeQo7JU2tEUcmuhJvqC9FabafSnDRfo9r7q8DA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:02:39.117067Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.07598","source_kind":"arxiv","source_version":6}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:296af5005cfefe6b1721f7c4a84852d7b2bc1bd7a7577c081311815161a43e0b","sha256:d7917d5c5e0a7db489612848a54f5c11dbb11db9161baa6078670e0252848964"],"state_sha256":"46230e61c1a97832c8bc5c1083c440c38a3e86480dbf3cc8b6ed940a59d89f84"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GnsYs/xIISQ/imDKfVJ8MaiOiI/Qsq1TvL+l2acixlYyemmkahyq4kkWcs0MzrrqT8KqJOcdl0FlgCKPcmvKCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T06:09:54.663707Z","bundle_sha256":"2dc8b496c239f1d30609bd9400dd9a0f5578cf76ef943d7c707b44ad693820b1"}}