{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:2NII6IDKBRPCEFMDMX6IX5OOD5","short_pith_number":"pith:2NII6IDK","canonical_record":{"source":{"id":"1911.03523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-11-08T20:28:40Z","cross_cats_sorted":[],"title_canon_sha256":"d7f6cf67e636c00f009c72da4fb91eda97a247cd5969057fc1d1881bb67f115e","abstract_canon_sha256":"3a54c0dbedf05beddf760da7009192801ce98f09d5ab416fdaf3db11e7e84532"},"schema_version":"1.0"},"canonical_sha256":"d3508f206a0c5e22158365fc8bf5ce1f573fc810f713ca243ebdcf0bd881ed49","source":{"kind":"arxiv","id":"1911.03523","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.03523","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"arxiv_version","alias_value":"1911.03523v1","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.03523","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"pith_short_12","alias_value":"2NII6IDKBRPC","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"pith_short_16","alias_value":"2NII6IDKBRPCEFMD","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"pith_short_8","alias_value":"2NII6IDK","created_at":"2026-07-05T00:18:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:2NII6IDKBRPCEFMDMX6IX5OOD5","target":"record","payload":{"canonical_record":{"source":{"id":"1911.03523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-11-08T20:28:40Z","cross_cats_sorted":[],"title_canon_sha256":"d7f6cf67e636c00f009c72da4fb91eda97a247cd5969057fc1d1881bb67f115e","abstract_canon_sha256":"3a54c0dbedf05beddf760da7009192801ce98f09d5ab416fdaf3db11e7e84532"},"schema_version":"1.0"},"canonical_sha256":"d3508f206a0c5e22158365fc8bf5ce1f573fc810f713ca243ebdcf0bd881ed49","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:18:13.216993Z","signature_b64":"sy9T3tD6JrCEZ6cEfYlNiPecH1qz0MDoXvowWzgjQVPQrlY607/vfNfLinKqTIPZwy8jSYKbo4MbzfQCz+tsDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3508f206a0c5e22158365fc8bf5ce1f573fc810f713ca243ebdcf0bd881ed49","last_reissued_at":"2026-07-05T00:18:13.216589Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:18:13.216589Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1911.03523","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":"2026-07-05T00:18:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NiSm8+krxSMZsszH12Prx608wh2AEfsrG/fl7+NIBv5kG2i/CjSDKXHY1CpvhUYplQTQkh9HJdQ7VhZMbDrzBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T16:44:09.218460Z"},"content_sha256":"229c33331ecfe6b83e81823363e8428bf91e44b8a5563873b6ddd7c558a15fd1","schema_version":"1.0","event_id":"sha256:229c33331ecfe6b83e81823363e8428bf91e44b8a5563873b6ddd7c558a15fd1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:2NII6IDKBRPCEFMDMX6IX5OOD5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Topological Nanospaser","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Jhih-Sheng Wu, Mark I. Stockman, Rupesh Ghimire, Vadym Apalkov","submitted_at":"2019-11-08T20:28:40Z","abstract_excerpt":"We propose a nanospaser made of an achiral plasmonic-metal nanodisk and a two-dimensional chiral gain medium -- a monolayer transition-metal dichalcogenide (TMDC). When one valley of the TMDC is selectively pumped (e.g., by a circular-polarized radiation), the spaser generates a mode carrying a topological charge (chirality) that matches that of the gain valley. The chirally mismatched, time-reversed mode has exactly the same frequency but the opposite topological charge; it is actively suppressed by the gain saturation (population clamping) and never generates leading to a strong topological "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.03523","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1911.03523/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":"2026-07-05T00:18:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qUMn1Ch9omtoDjrupeIPlppKvwGfjFzs6iTgmWj5huSWk5ir9IcN3X7BwgyBqGFXoEfDIOYgcIuVa10ilrm3Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T16:44:09.218829Z"},"content_sha256":"c5496f83a754dedea0ab0c5ead7460bf7381c07f605bcb4ab092d685370edf41","schema_version":"1.0","event_id":"sha256:c5496f83a754dedea0ab0c5ead7460bf7381c07f605bcb4ab092d685370edf41"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2NII6IDKBRPCEFMDMX6IX5OOD5/bundle.json","state_url":"https://pith.science/pith/2NII6IDKBRPCEFMDMX6IX5OOD5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2NII6IDKBRPCEFMDMX6IX5OOD5/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":"2026-07-08T16:44:09Z","links":{"resolver":"https://pith.science/pith/2NII6IDKBRPCEFMDMX6IX5OOD5","bundle":"https://pith.science/pith/2NII6IDKBRPCEFMDMX6IX5OOD5/bundle.json","state":"https://pith.science/pith/2NII6IDKBRPCEFMDMX6IX5OOD5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2NII6IDKBRPCEFMDMX6IX5OOD5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:2NII6IDKBRPCEFMDMX6IX5OOD5","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":"3a54c0dbedf05beddf760da7009192801ce98f09d5ab416fdaf3db11e7e84532","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-11-08T20:28:40Z","title_canon_sha256":"d7f6cf67e636c00f009c72da4fb91eda97a247cd5969057fc1d1881bb67f115e"},"schema_version":"1.0","source":{"id":"1911.03523","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.03523","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"arxiv_version","alias_value":"1911.03523v1","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.03523","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"pith_short_12","alias_value":"2NII6IDKBRPC","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"pith_short_16","alias_value":"2NII6IDKBRPCEFMD","created_at":"2026-07-05T00:18:13Z"},{"alias_kind":"pith_short_8","alias_value":"2NII6IDK","created_at":"2026-07-05T00:18:13Z"}],"graph_snapshots":[{"event_id":"sha256:c5496f83a754dedea0ab0c5ead7460bf7381c07f605bcb4ab092d685370edf41","target":"graph","created_at":"2026-07-05T00:18:13Z","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/1911.03523/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a nanospaser made of an achiral plasmonic-metal nanodisk and a two-dimensional chiral gain medium -- a monolayer transition-metal dichalcogenide (TMDC). When one valley of the TMDC is selectively pumped (e.g., by a circular-polarized radiation), the spaser generates a mode carrying a topological charge (chirality) that matches that of the gain valley. The chirally mismatched, time-reversed mode has exactly the same frequency but the opposite topological charge; it is actively suppressed by the gain saturation (population clamping) and never generates leading to a strong topological ","authors_text":"Jhih-Sheng Wu, Mark I. Stockman, Rupesh Ghimire, Vadym Apalkov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-11-08T20:28:40Z","title":"Topological Nanospaser"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.03523","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":"sha256:229c33331ecfe6b83e81823363e8428bf91e44b8a5563873b6ddd7c558a15fd1","target":"record","created_at":"2026-07-05T00:18:13Z","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":"3a54c0dbedf05beddf760da7009192801ce98f09d5ab416fdaf3db11e7e84532","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2019-11-08T20:28:40Z","title_canon_sha256":"d7f6cf67e636c00f009c72da4fb91eda97a247cd5969057fc1d1881bb67f115e"},"schema_version":"1.0","source":{"id":"1911.03523","kind":"arxiv","version":1}},"canonical_sha256":"d3508f206a0c5e22158365fc8bf5ce1f573fc810f713ca243ebdcf0bd881ed49","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3508f206a0c5e22158365fc8bf5ce1f573fc810f713ca243ebdcf0bd881ed49","first_computed_at":"2026-07-05T00:18:13.216589Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:18:13.216589Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sy9T3tD6JrCEZ6cEfYlNiPecH1qz0MDoXvowWzgjQVPQrlY607/vfNfLinKqTIPZwy8jSYKbo4MbzfQCz+tsDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:18:13.216993Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.03523","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:229c33331ecfe6b83e81823363e8428bf91e44b8a5563873b6ddd7c558a15fd1","sha256:c5496f83a754dedea0ab0c5ead7460bf7381c07f605bcb4ab092d685370edf41"],"state_sha256":"4b9f2a319d33332ab5bfeebfb2b28831f91aff18a4ba508d749b5553126bfc48"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iVlBUuibxsKb+VN4pWwo4ejLrq72xnzxi1whckvvfpcAsigrMPNcL9SGgHDQmNtDLHLWE4/2cxjYC4UhvleKCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T16:44:09.221065Z","bundle_sha256":"410f4801f8370b2d792fb6f38589b9e33fa7a3bd0165b49abc76dca79f2ad422"}}