{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:KLWSQPN7WAKHQOO7V7L4EAKGQJ","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":"c693edd00a2ae4e8785d61612e0eb4ee980442cbe2cad277904ecbe36797e96c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-05-07T21:59:48Z","title_canon_sha256":"373113e862f58d296e3abe13d98ba842b9da06c81bfd0299cebfd7cf6ff07c91"},"schema_version":"1.0","source":{"id":"1905.02821","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.02821","created_at":"2026-05-17T23:46:45Z"},{"alias_kind":"arxiv_version","alias_value":"1905.02821v1","created_at":"2026-05-17T23:46:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.02821","created_at":"2026-05-17T23:46:45Z"},{"alias_kind":"pith_short_12","alias_value":"KLWSQPN7WAKH","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"KLWSQPN7WAKHQOO7","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"KLWSQPN7","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:adbcaa4d885a8670a9b59245084f05156ccf7d73a0fc69f16c4fe3f485a33065","target":"graph","created_at":"2026-05-17T23:46:45Z","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":"Since the new millennium coherent extreme ultra-violet and soft x-ray radiation has revolutionized the understanding of dynamical physical, chemical and biological systems at the electron's natural timescale. Unfortunately, coherent laser-based upconversion of infrared photons to vacuum-ultraviolet and soft x-ray high-order harmonics in gaseous, liquid and solid targets is notoriously inefficient. In dense nonlinear media, the limiting factor is strong re-absorption of the generated high-energy photons. Here we overcome this limitation by allowing high-order harmonics generated from a periodic","authors_text":"David A. Reis, Giulio Vampa, Hanzhe Liu, Jelena Vuckovic, Jingyuan Linda Zhang, Philip H. Bucksbaum, Shanhui Fan, Siddharth Buddhiraju, Yu Shi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-05-07T21:59:48Z","title":"Overcoming the absorption limit in high-harmonic generation from crystals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.02821","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":"sha256:4148db2ff1cac91a5dd34380e4aefb70f1eea4c269af6ac94f11aef77538f7e2","target":"record","created_at":"2026-05-17T23:46:45Z","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":"c693edd00a2ae4e8785d61612e0eb4ee980442cbe2cad277904ecbe36797e96c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2019-05-07T21:59:48Z","title_canon_sha256":"373113e862f58d296e3abe13d98ba842b9da06c81bfd0299cebfd7cf6ff07c91"},"schema_version":"1.0","source":{"id":"1905.02821","kind":"arxiv","version":1}},"canonical_sha256":"52ed283dbfb0147839dfafd7c20146827a5b72bef58ae43eaca3a2ed9d2d7525","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"52ed283dbfb0147839dfafd7c20146827a5b72bef58ae43eaca3a2ed9d2d7525","first_computed_at":"2026-05-17T23:46:45.291822Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:46:45.291822Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Owpt/u19RYJzyi4AR+Kz3sWnuGi5BYNC72EEiXD8xqhgOfZcuoWDBUJKpWBpwejx6fHwZK5LuGolzqqWSWlRDw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:46:45.292540Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.02821","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4148db2ff1cac91a5dd34380e4aefb70f1eea4c269af6ac94f11aef77538f7e2","sha256:adbcaa4d885a8670a9b59245084f05156ccf7d73a0fc69f16c4fe3f485a33065"],"state_sha256":"ad85003d7cd5e1101b27e337e918224d9560567dfc2933437ae53e255cc3371c"}