{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:47TYT55OB43BTKN3DJTVE3L3NI","short_pith_number":"pith:47TYT55O","canonical_record":{"source":{"id":"1902.03539","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-02-10T05:20:59Z","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"title_canon_sha256":"349e51f74e7a9c8bdfc39c0b57cae54c8f846d860a06f0241adfaa386d098603","abstract_canon_sha256":"b245c272a87efa8a423103e50b672ed3aab2c1cee990a6a3aa5ab78a014caeaa"},"schema_version":"1.0"},"canonical_sha256":"e7e789f7ae0f3619a9bb1a67526d7b6a39691d05cba1f73ac73c8c38fb02cc4a","source":{"kind":"arxiv","id":"1902.03539","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03539","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03539v1","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03539","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"pith_short_12","alias_value":"47TYT55OB43B","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"pith_short_16","alias_value":"47TYT55OB43BTKN3","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"pith_short_8","alias_value":"47TYT55O","created_at":"2026-07-05T00:13:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:47TYT55OB43BTKN3DJTVE3L3NI","target":"record","payload":{"canonical_record":{"source":{"id":"1902.03539","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-02-10T05:20:59Z","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"title_canon_sha256":"349e51f74e7a9c8bdfc39c0b57cae54c8f846d860a06f0241adfaa386d098603","abstract_canon_sha256":"b245c272a87efa8a423103e50b672ed3aab2c1cee990a6a3aa5ab78a014caeaa"},"schema_version":"1.0"},"canonical_sha256":"e7e789f7ae0f3619a9bb1a67526d7b6a39691d05cba1f73ac73c8c38fb02cc4a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:13:41.633940Z","signature_b64":"VuEOIkABjQTEEq82WLVC1cmGTmB1VhpBPOLXIgg7Mq2CwF1zXJmTQayGiX4vo1eNu90UX+Web9FRMakh/iO9BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7e789f7ae0f3619a9bb1a67526d7b6a39691d05cba1f73ac73c8c38fb02cc4a","last_reissued_at":"2026-07-05T00:13:41.633591Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:13:41.633591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.03539","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":"2026-07-05T00:13:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EZ2v/zYBjfv63x4Ncf2YV2ATeXwKIOGj9vG8KdE00TPuYgxoPD0vTzGi2beyMwZpd+Ev37wtGmt3hPoU4N0hBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T21:04:53.807023Z"},"content_sha256":"e5c91c36344506db0ca88ab47627dc1a80207b1effca46e38db63e05e2edfbba","schema_version":"1.0","event_id":"sha256:e5c91c36344506db0ca88ab47627dc1a80207b1effca46e38db63e05e2edfbba"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:47TYT55OB43BTKN3DJTVE3L3NI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-harmonic generation from an epsilon-near-zero material","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.optics"],"primary_cat":"physics.app-ph","authors_text":"Alejandro Manjavacas, Hanzhe Liu, Igal Brener, Jian Lu, Jon-Paul Maria, Kyle Kelley, Michael B. Sinclair, Shambhu Ghimire, Ting S. Luk, Yuanmu Yang","submitted_at":"2019-02-10T05:20:59Z","abstract_excerpt":"High-harmonic generation (HHG) from a compact, solid-state medium is highly desirable for applications such as coherent attosecond pulse generation and extreme ultra-violet (EUV) spectroscopy, yet the typically weak conversion of pump light to HHG can largely hinder its applications. Here, we use a material operating in its epsilon-near-zero (ENZ) region, where the real part of its permittivity vanishes, to greatly boost the efficiency of the HHG process at the microscopic level. In experiments, we report high-harmonic emission up to the 9th order directly from a low-loss, solid-state ENZ medi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03539","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/1902.03539/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":"2026-07-05T00:13:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5vV6yAUswGWngnm/mxhASh84pmpBsB5XQYejeFz4DDH7QSpxulQqjm/asbxHFIKv1mcvVFELFehHdhUefZJPCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T21:04:53.807313Z"},"content_sha256":"e3f55188c204aa28d601981b520a4e67cfa720eee2ebbe9200e6499ec15821d6","schema_version":"1.0","event_id":"sha256:e3f55188c204aa28d601981b520a4e67cfa720eee2ebbe9200e6499ec15821d6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/47TYT55OB43BTKN3DJTVE3L3NI/bundle.json","state_url":"https://pith.science/pith/47TYT55OB43BTKN3DJTVE3L3NI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/47TYT55OB43BTKN3DJTVE3L3NI/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":"2026-07-31T21:04:53Z","links":{"resolver":"https://pith.science/pith/47TYT55OB43BTKN3DJTVE3L3NI","bundle":"https://pith.science/pith/47TYT55OB43BTKN3DJTVE3L3NI/bundle.json","state":"https://pith.science/pith/47TYT55OB43BTKN3DJTVE3L3NI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/47TYT55OB43BTKN3DJTVE3L3NI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:47TYT55OB43BTKN3DJTVE3L3NI","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":"b245c272a87efa8a423103e50b672ed3aab2c1cee990a6a3aa5ab78a014caeaa","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-02-10T05:20:59Z","title_canon_sha256":"349e51f74e7a9c8bdfc39c0b57cae54c8f846d860a06f0241adfaa386d098603"},"schema_version":"1.0","source":{"id":"1902.03539","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.03539","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"arxiv_version","alias_value":"1902.03539v1","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.03539","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"pith_short_12","alias_value":"47TYT55OB43B","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"pith_short_16","alias_value":"47TYT55OB43BTKN3","created_at":"2026-07-05T00:13:41Z"},{"alias_kind":"pith_short_8","alias_value":"47TYT55O","created_at":"2026-07-05T00:13:41Z"}],"graph_snapshots":[{"event_id":"sha256:e3f55188c204aa28d601981b520a4e67cfa720eee2ebbe9200e6499ec15821d6","target":"graph","created_at":"2026-07-05T00:13:41Z","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/1902.03539/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-harmonic generation (HHG) from a compact, solid-state medium is highly desirable for applications such as coherent attosecond pulse generation and extreme ultra-violet (EUV) spectroscopy, yet the typically weak conversion of pump light to HHG can largely hinder its applications. Here, we use a material operating in its epsilon-near-zero (ENZ) region, where the real part of its permittivity vanishes, to greatly boost the efficiency of the HHG process at the microscopic level. In experiments, we report high-harmonic emission up to the 9th order directly from a low-loss, solid-state ENZ medi","authors_text":"Alejandro Manjavacas, Hanzhe Liu, Igal Brener, Jian Lu, Jon-Paul Maria, Kyle Kelley, Michael B. Sinclair, Shambhu Ghimire, Ting S. Luk, Yuanmu Yang","cross_cats":["cond-mat.mes-hall","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-02-10T05:20:59Z","title":"High-harmonic generation from an epsilon-near-zero material"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.03539","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:e5c91c36344506db0ca88ab47627dc1a80207b1effca46e38db63e05e2edfbba","target":"record","created_at":"2026-07-05T00:13:41Z","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":"b245c272a87efa8a423103e50b672ed3aab2c1cee990a6a3aa5ab78a014caeaa","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-02-10T05:20:59Z","title_canon_sha256":"349e51f74e7a9c8bdfc39c0b57cae54c8f846d860a06f0241adfaa386d098603"},"schema_version":"1.0","source":{"id":"1902.03539","kind":"arxiv","version":1}},"canonical_sha256":"e7e789f7ae0f3619a9bb1a67526d7b6a39691d05cba1f73ac73c8c38fb02cc4a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7e789f7ae0f3619a9bb1a67526d7b6a39691d05cba1f73ac73c8c38fb02cc4a","first_computed_at":"2026-07-05T00:13:41.633591Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:13:41.633591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VuEOIkABjQTEEq82WLVC1cmGTmB1VhpBPOLXIgg7Mq2CwF1zXJmTQayGiX4vo1eNu90UX+Web9FRMakh/iO9BQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:13:41.633940Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.03539","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5c91c36344506db0ca88ab47627dc1a80207b1effca46e38db63e05e2edfbba","sha256:e3f55188c204aa28d601981b520a4e67cfa720eee2ebbe9200e6499ec15821d6"],"state_sha256":"cd2ae82e767b6db7e9937c91e2aac06976d415787c88a1d0eb759ba7b19ce57b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nlUg7pr5yIWkGsMoB2fvBHMmQGGJpSBUG4dQgJvAs1Ypu1vsublwZ2adSYtUbdhniQ1mcgirqVznoZaED6r3AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T21:04:53.810444Z","bundle_sha256":"8f3771280709b1a17848f3889a8de1bdade6ff931126f05029a45b28d5dfccca"}}