{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:6DKBRYEUZJ765SHBBGPOO3LM5L","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":"51e9cb6dd8bb0f5e91375044df346a367bd3054f0569ea61d289d52bd1d6358b","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-07-19T12:46:47Z","title_canon_sha256":"cd6b80782a9d8ce4cf6b3282fc97c677b21172e4176fb4f642c55d12e44cdfb2"},"schema_version":"1.0","source":{"id":"2207.09234","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.09234","created_at":"2026-07-05T04:41:47Z"},{"alias_kind":"arxiv_version","alias_value":"2207.09234v1","created_at":"2026-07-05T04:41:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.09234","created_at":"2026-07-05T04:41:47Z"},{"alias_kind":"pith_short_12","alias_value":"6DKBRYEUZJ76","created_at":"2026-07-05T04:41:47Z"},{"alias_kind":"pith_short_16","alias_value":"6DKBRYEUZJ765SHB","created_at":"2026-07-05T04:41:47Z"},{"alias_kind":"pith_short_8","alias_value":"6DKBRYEU","created_at":"2026-07-05T04:41:47Z"}],"graph_snapshots":[{"event_id":"sha256:df9258d80171933c3c4d40e66d6edde12b6b26ad918db813ce4d48bdcbc47a7d","target":"graph","created_at":"2026-07-05T04:41:47Z","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/2207.09234/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Faint light spectroscopy has many important applications such as fluorescence spectroscopy, lidar and astronomical observations. However, long measurement time limit its application on real-time measurement. In this work, a photon counting reconstructive spectrometer combining metasurfaces and superconducting nanowire single photon detectors (SNSPDs) was proposed. A prototype device was fabricated on a silicon on isolator (SOI) substrate, and its performance was characterized. Experiment results show that this device support spectral reconstruction of mono-color lights with a resolution of 2 n","authors_text":"Fang Liu, Hao Li, Jingyuan Zheng, Kaiyu Cui, Lixing You, Mingzhong Hu, Wei Zhang, Xue Feng, Yidong Huang, You Xiao, Yuchen Zhao","cross_cats":["physics.ins-det"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-07-19T12:46:47Z","title":"A photon counting reconstructive spectrometer combining metasurfaces and superconducting nanowire single-photon detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.09234","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":"sha256:7f8204af510f7a666a395a6988abb9196900d96a278ffffee391d0d3686a85a4","target":"record","created_at":"2026-07-05T04:41:47Z","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":"51e9cb6dd8bb0f5e91375044df346a367bd3054f0569ea61d289d52bd1d6358b","cross_cats_sorted":["physics.ins-det"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-07-19T12:46:47Z","title_canon_sha256":"cd6b80782a9d8ce4cf6b3282fc97c677b21172e4176fb4f642c55d12e44cdfb2"},"schema_version":"1.0","source":{"id":"2207.09234","kind":"arxiv","version":1}},"canonical_sha256":"f0d418e094ca7feec8e1099ee76d6ceae9b4a921c0a25455b86ab7093c7f30eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f0d418e094ca7feec8e1099ee76d6ceae9b4a921c0a25455b86ab7093c7f30eb","first_computed_at":"2026-07-05T04:41:47.904454Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:41:47.904454Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MtR6sTsVj1a/FXcIS1/u+u6iHw9lwWtoyyNwmP8VrkMuD07Cnap++G4XnEoppPyjJfpr7SnrOYMnc+V1U3jYDg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:41:47.904922Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.09234","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7f8204af510f7a666a395a6988abb9196900d96a278ffffee391d0d3686a85a4","sha256:df9258d80171933c3c4d40e66d6edde12b6b26ad918db813ce4d48bdcbc47a7d"],"state_sha256":"1006531933f8d4d4ba400df48ff90b799d5ada2597aa830fceaef324f85eccf0"}