{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:HBT64L2NZS3BRAW5EP5KOXPMT6","short_pith_number":"pith:HBT64L2N","canonical_record":{"source":{"id":"1304.7447","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-04-28T09:49:38Z","cross_cats_sorted":["cond-mat.supr-con","physics.optics"],"title_canon_sha256":"5d61d452bac55cd8a4cb690a0775dfa8ff5f659f271e4040d9d41621a63054af","abstract_canon_sha256":"1dbfd4a8ba533038fccfe101903d9ebbac72781d2f83d321fac63a475f72889f"},"schema_version":"1.0"},"canonical_sha256":"3867ee2f4dccb61882dd23faa75dec9fa5c8753add7d87ff4cd5de7e52e42bdd","source":{"kind":"arxiv","id":"1304.7447","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.7447","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"arxiv_version","alias_value":"1304.7447v1","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.7447","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"pith_short_12","alias_value":"HBT64L2NZS3B","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HBT64L2NZS3BRAW5","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HBT64L2N","created_at":"2026-05-18T12:27:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:HBT64L2NZS3BRAW5EP5KOXPMT6","target":"record","payload":{"canonical_record":{"source":{"id":"1304.7447","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-04-28T09:49:38Z","cross_cats_sorted":["cond-mat.supr-con","physics.optics"],"title_canon_sha256":"5d61d452bac55cd8a4cb690a0775dfa8ff5f659f271e4040d9d41621a63054af","abstract_canon_sha256":"1dbfd4a8ba533038fccfe101903d9ebbac72781d2f83d321fac63a475f72889f"},"schema_version":"1.0"},"canonical_sha256":"3867ee2f4dccb61882dd23faa75dec9fa5c8753add7d87ff4cd5de7e52e42bdd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:14.957856Z","signature_b64":"HZlFNmWqJPHyOrYtVW0E/5Noe3z30NFulG3wwaq9rdziqdm0+sxy2U4u4cvLvf0l6ReIlaq5nZdCe/O9UB9xDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3867ee2f4dccb61882dd23faa75dec9fa5c8753add7d87ff4cd5de7e52e42bdd","last_reissued_at":"2026-05-18T01:50:14.957258Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:14.957258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.7447","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":"2026-05-18T01:50:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OSWNN/jz5rOfC0e/xpY7I7sy8XeyCHvKdUinSo19WQMAN14SBtUqDYWmH53e0emcfxfIdtYXZsoWSK+STGFRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:09:41.328971Z"},"content_sha256":"0edd1ff66e532e8c49af6021ee66939ca9436465eab7c4f5639a4859d71733d2","schema_version":"1.0","event_id":"sha256:0edd1ff66e532e8c49af6021ee66939ca9436465eab7c4f5639a4859d71733d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:HBT64L2NZS3BRAW5EP5KOXPMT6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time-of-flight laser ranging and imaging at 1550 nm using low-jitter superconducting nanowire single-photon detection system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","physics.optics"],"primary_cat":"physics.ins-det","authors_text":"Dengkuan Liu, Guang Wu, Heping Zeng, Lixing You, Mianheng Jiang, Min Ren, Sijing Chen, Weijun Zhang, Wenxing Zhang, Xiaoming Xie, Xiaoyan Yang, Yuhao He, Zhen Wang","submitted_at":"2013-04-28T09:49:38Z","abstract_excerpt":"We developed a time-correlated single-photon counting (TCSPC) system based on the low-jitter superconducting nanowire single-photon detection (SNSPD) technology. The causes of jitters in the TCSPC system were analyzed. Owing to the low jitter of the SNSPD technology, a system jitter of 26.8 ps full-width at half-maximum was achieved after optimizing the system. We demonstrated time-of-flight laser ranging at 1550 nm wavelength at a stand-off distance of 115 m, based on this TCSPC system. A depth resolution of 4 mm was achieved directly by locating the centroids of each of the two return signal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.7447","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":""},"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":"2026-05-18T01:50:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4OT9snBxKZPOCc5G47VlI3wB44nCzCyJ9wYw7KWo1hBvNqwQmlanZHgK/Mo5yqtYGcor4Dt9QDUXYBPz83qHBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T00:09:41.329685Z"},"content_sha256":"60b64cf42ebb0dfea89537e60f7b1da01e11d55fa0ec7910b3f2971c866232f1","schema_version":"1.0","event_id":"sha256:60b64cf42ebb0dfea89537e60f7b1da01e11d55fa0ec7910b3f2971c866232f1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HBT64L2NZS3BRAW5EP5KOXPMT6/bundle.json","state_url":"https://pith.science/pith/HBT64L2NZS3BRAW5EP5KOXPMT6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HBT64L2NZS3BRAW5EP5KOXPMT6/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":"2026-05-30T00:09:41Z","links":{"resolver":"https://pith.science/pith/HBT64L2NZS3BRAW5EP5KOXPMT6","bundle":"https://pith.science/pith/HBT64L2NZS3BRAW5EP5KOXPMT6/bundle.json","state":"https://pith.science/pith/HBT64L2NZS3BRAW5EP5KOXPMT6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HBT64L2NZS3BRAW5EP5KOXPMT6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:HBT64L2NZS3BRAW5EP5KOXPMT6","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":"1dbfd4a8ba533038fccfe101903d9ebbac72781d2f83d321fac63a475f72889f","cross_cats_sorted":["cond-mat.supr-con","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-04-28T09:49:38Z","title_canon_sha256":"5d61d452bac55cd8a4cb690a0775dfa8ff5f659f271e4040d9d41621a63054af"},"schema_version":"1.0","source":{"id":"1304.7447","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.7447","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"arxiv_version","alias_value":"1304.7447v1","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.7447","created_at":"2026-05-18T01:50:14Z"},{"alias_kind":"pith_short_12","alias_value":"HBT64L2NZS3B","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_16","alias_value":"HBT64L2NZS3BRAW5","created_at":"2026-05-18T12:27:46Z"},{"alias_kind":"pith_short_8","alias_value":"HBT64L2N","created_at":"2026-05-18T12:27:46Z"}],"graph_snapshots":[{"event_id":"sha256:60b64cf42ebb0dfea89537e60f7b1da01e11d55fa0ec7910b3f2971c866232f1","target":"graph","created_at":"2026-05-18T01:50:14Z","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":"We developed a time-correlated single-photon counting (TCSPC) system based on the low-jitter superconducting nanowire single-photon detection (SNSPD) technology. The causes of jitters in the TCSPC system were analyzed. Owing to the low jitter of the SNSPD technology, a system jitter of 26.8 ps full-width at half-maximum was achieved after optimizing the system. We demonstrated time-of-flight laser ranging at 1550 nm wavelength at a stand-off distance of 115 m, based on this TCSPC system. A depth resolution of 4 mm was achieved directly by locating the centroids of each of the two return signal","authors_text":"Dengkuan Liu, Guang Wu, Heping Zeng, Lixing You, Mianheng Jiang, Min Ren, Sijing Chen, Weijun Zhang, Wenxing Zhang, Xiaoming Xie, Xiaoyan Yang, Yuhao He, Zhen Wang","cross_cats":["cond-mat.supr-con","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-04-28T09:49:38Z","title":"Time-of-flight laser ranging and imaging at 1550 nm using low-jitter superconducting nanowire single-photon detection system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.7447","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":"sha256:0edd1ff66e532e8c49af6021ee66939ca9436465eab7c4f5639a4859d71733d2","target":"record","created_at":"2026-05-18T01:50:14Z","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":"1dbfd4a8ba533038fccfe101903d9ebbac72781d2f83d321fac63a475f72889f","cross_cats_sorted":["cond-mat.supr-con","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2013-04-28T09:49:38Z","title_canon_sha256":"5d61d452bac55cd8a4cb690a0775dfa8ff5f659f271e4040d9d41621a63054af"},"schema_version":"1.0","source":{"id":"1304.7447","kind":"arxiv","version":1}},"canonical_sha256":"3867ee2f4dccb61882dd23faa75dec9fa5c8753add7d87ff4cd5de7e52e42bdd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3867ee2f4dccb61882dd23faa75dec9fa5c8753add7d87ff4cd5de7e52e42bdd","first_computed_at":"2026-05-18T01:50:14.957258Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:14.957258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HZlFNmWqJPHyOrYtVW0E/5Noe3z30NFulG3wwaq9rdziqdm0+sxy2U4u4cvLvf0l6ReIlaq5nZdCe/O9UB9xDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:14.957856Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.7447","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0edd1ff66e532e8c49af6021ee66939ca9436465eab7c4f5639a4859d71733d2","sha256:60b64cf42ebb0dfea89537e60f7b1da01e11d55fa0ec7910b3f2971c866232f1"],"state_sha256":"fd3989608f20f4d74a2db59c091afab6848ee94e23fcfc28f9ecd71506281842"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MiXYjK7ph0H5OoxZwwV5aEj/0bay97LoF05LHwtypv/1oSfUonVN+NtMTqpmiRhhpE68bYz31Etnj/dZMFSdCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T00:09:41.333538Z","bundle_sha256":"034ad2d3af2ff840f56d90aa56dec23fff10524cec9748484d9533a66ce47064"}}