{"as_of":"2026-08-22T23:10:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:c44552ee0df9fb981a7e490a9996cd5893b480d6a3d2f3057325753b430ad579","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":1,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-22T06:32:14.747728+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-09T15:49:48.878101Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"pith","source_observed_at":"2026-08-09T15:49:48.993998Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1903.10936","last_updated":"2019-09-16T01:19:04Z","snapshot_observed_at":"2026-08-22T16:07:28.643515Z","submitted_at":"2019-03-26T14:56:55Z","title":"Spatiotemporally Separable Biphoton State Generated by Spontaneous Four Wave Mixing in Ultrathin Nonlinear Films","version":4},"cited_work":{"arxiv_id":"1903.10936","doi":null,"metadata_source":"pith","pith_arxiv_id":"1903.10936","snapshot_observed_at":"2026-08-09T15:49:48.993998Z","title":"Spatiotemporally Separable Biphoton State Generated by Spontaneous Four Wave Mixing in Ultrathin Nonlinear Films","venue":"physics.optics","work_id":"af40e9c9-4a67-4a76-8fc7-3352d28bcb1d","year":2019},"citing_paper":{"arxiv_id":"2502.01305","last_updated":"2025-05-02T10:13:39Z","snapshot_observed_at":"2026-08-13T16:44:05.542938Z","submitted_at":"2025-02-03T12:30:06Z","title":"Generation of photon pairs through spontaneous four-wave mixing in subwavelength nonlinear films","version":2},"reference_index":20,"source":"pdf_text","source_observed_at":"2026-08-09T15:49:48.878101Z"},"links":{"cited_paper":"/paper/1903.10936","citing_paper":"/paper/2502.01305"},"observation_digest":"sha256:fd40c8f87fa24ce68f537d6e424fe9f5c06e4c723d370ddfe0cc5b22c3c5c99f","observation_id":"54e3fdf3-a016-453f-b29d-b42ebd7debf5","resolution":{"observed_at":"2026-08-09T15:49:49.000991Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-22T06:32:14.747728+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-22T06:32:14.747728+00:00","source":"crossref"},{"observed_at":"2026-08-22T06:32:06.552537+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1903.10936/citation-record","integrity":"/paper/1903.10936/integrity","json":"/paper/1903.10936/citation-record.json","paper":"/paper/1903.10936"},"outbound":[],"paper":{"arxiv_id":"1903.10936","last_updated":"2019-09-16T01:19:04Z","latest_version":4,"primary_category":"physics.optics","snapshot_observed_at":"2026-08-22T16:07:28.643515Z","submitted_at":"2019-03-26T14:56:55Z","title":"Spatiotemporally Separable Biphoton State Generated by Spontaneous Four Wave Mixing in Ultrathin Nonlinear Films"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-22T06:32:14.747728+00:00","source":"crossref"},{"observed_at":"2026-08-22T06:32:06.552537+00:00","source":"retraction_watch"}],"thesis":"As of 22 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1903.10936."}