{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:3ULT7PMAQ3MYHE7WFJOXNHL7PS","short_pith_number":"pith:3ULT7PMA","canonical_record":{"source":{"id":"1901.02204","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-01-08T08:30:10Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"ee1a7f0ff5e4580cac098e7428e0e02ea9d96f985bd920fefcab6239ec1ad24c","abstract_canon_sha256":"4778014c14c64b813cf87cd2111460419a2a3883944b992421d45fd320c883fc"},"schema_version":"1.0"},"canonical_sha256":"dd173fbd8086d98393f62a5d769d7f7ca717d0b9df6a8ad5245fa0d7ee0a0b53","source":{"kind":"arxiv","id":"1901.02204","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02204","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02204v1","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02204","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"pith_short_12","alias_value":"3ULT7PMAQ3MY","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"3ULT7PMAQ3MYHE7W","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"3ULT7PMA","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:3ULT7PMAQ3MYHE7WFJOXNHL7PS","target":"record","payload":{"canonical_record":{"source":{"id":"1901.02204","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-01-08T08:30:10Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"ee1a7f0ff5e4580cac098e7428e0e02ea9d96f985bd920fefcab6239ec1ad24c","abstract_canon_sha256":"4778014c14c64b813cf87cd2111460419a2a3883944b992421d45fd320c883fc"},"schema_version":"1.0"},"canonical_sha256":"dd173fbd8086d98393f62a5d769d7f7ca717d0b9df6a8ad5245fa0d7ee0a0b53","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:26.691914Z","signature_b64":"R7cm9kSV1tUuDYQ27tBEqcEJ+WmT3eiRC4J59VT7m8QakhuR0a0pRMsYdIhkggLfre/9QivIR9MobAI7YWNIAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dd173fbd8086d98393f62a5d769d7f7ca717d0b9df6a8ad5245fa0d7ee0a0b53","last_reissued_at":"2026-05-17T23:47:26.691263Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:26.691263Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.02204","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":"2026-05-17T23:47:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ggz5G0JMXIht22R7Jb71hG/k1WKnoMQo8ytnNi3U9hvZWWIaJrsL4HLn0juGMTb4j7jKGGariYvEBmm7VwTbBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T01:33:56.767821Z"},"content_sha256":"9e1a4f81fc7a4ba564a61c3cb96c5ea6ef36eff7b99fe6297494623ab9e756b4","schema_version":"1.0","event_id":"sha256:9e1a4f81fc7a4ba564a61c3cb96c5ea6ef36eff7b99fe6297494623ab9e756b4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:3ULT7PMAQ3MYHE7WFJOXNHL7PS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Characterizing nonlocal dispersion compensation in deployed telecommunications fiber","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Alexander Ling, Christian Kurtsiefer, Hou Shun Poh, James A. Grieve, Yicheng Shi","submitted_at":"2019-01-08T08:30:10Z","abstract_excerpt":"Propagation of broadband photon pairs over deployed telecommunication fibers is used to achieve nonlocal dispersion compensation without the deliberate introduction of negative dispersion. This is made possible by exploiting time-energy entanglement and the positive and negative dispersive properties of the fiber. We demonstrate preservation of photon timing correlations after transmission over two multi-segment 10km spans of deployed fiber and up to 80km of laboratory-based fiber."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02204","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":"2026-05-17T23:47:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A31Bmu/zxIePbJVEf/CaABMEspEDyH7Y8+BPkh0lPBhZwlLBg+xO350EtMnbsXBAKndniX1kHX1NCdbqrz/qAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T01:33:56.768479Z"},"content_sha256":"e588fabd7480024515beb726b4b49be346a8431e8aab37c0a20e2ef58ec60ee7","schema_version":"1.0","event_id":"sha256:e588fabd7480024515beb726b4b49be346a8431e8aab37c0a20e2ef58ec60ee7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS/bundle.json","state_url":"https://pith.science/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS/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":"2026-05-25T01:33:56Z","links":{"resolver":"https://pith.science/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS","bundle":"https://pith.science/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS/bundle.json","state":"https://pith.science/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3ULT7PMAQ3MYHE7WFJOXNHL7PS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:3ULT7PMAQ3MYHE7WFJOXNHL7PS","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":"4778014c14c64b813cf87cd2111460419a2a3883944b992421d45fd320c883fc","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-01-08T08:30:10Z","title_canon_sha256":"ee1a7f0ff5e4580cac098e7428e0e02ea9d96f985bd920fefcab6239ec1ad24c"},"schema_version":"1.0","source":{"id":"1901.02204","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02204","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02204v1","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02204","created_at":"2026-05-17T23:47:26Z"},{"alias_kind":"pith_short_12","alias_value":"3ULT7PMAQ3MY","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"3ULT7PMAQ3MYHE7W","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"3ULT7PMA","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:e588fabd7480024515beb726b4b49be346a8431e8aab37c0a20e2ef58ec60ee7","target":"graph","created_at":"2026-05-17T23:47:26Z","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":"Propagation of broadband photon pairs over deployed telecommunication fibers is used to achieve nonlocal dispersion compensation without the deliberate introduction of negative dispersion. This is made possible by exploiting time-energy entanglement and the positive and negative dispersive properties of the fiber. We demonstrate preservation of photon timing correlations after transmission over two multi-segment 10km spans of deployed fiber and up to 80km of laboratory-based fiber.","authors_text":"Alexander Ling, Christian Kurtsiefer, Hou Shun Poh, James A. Grieve, Yicheng Shi","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-01-08T08:30:10Z","title":"Characterizing nonlocal dispersion compensation in deployed telecommunications fiber"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02204","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":"sha256:9e1a4f81fc7a4ba564a61c3cb96c5ea6ef36eff7b99fe6297494623ab9e756b4","target":"record","created_at":"2026-05-17T23:47:26Z","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":"4778014c14c64b813cf87cd2111460419a2a3883944b992421d45fd320c883fc","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-01-08T08:30:10Z","title_canon_sha256":"ee1a7f0ff5e4580cac098e7428e0e02ea9d96f985bd920fefcab6239ec1ad24c"},"schema_version":"1.0","source":{"id":"1901.02204","kind":"arxiv","version":1}},"canonical_sha256":"dd173fbd8086d98393f62a5d769d7f7ca717d0b9df6a8ad5245fa0d7ee0a0b53","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dd173fbd8086d98393f62a5d769d7f7ca717d0b9df6a8ad5245fa0d7ee0a0b53","first_computed_at":"2026-05-17T23:47:26.691263Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:26.691263Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R7cm9kSV1tUuDYQ27tBEqcEJ+WmT3eiRC4J59VT7m8QakhuR0a0pRMsYdIhkggLfre/9QivIR9MobAI7YWNIAg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:26.691914Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.02204","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9e1a4f81fc7a4ba564a61c3cb96c5ea6ef36eff7b99fe6297494623ab9e756b4","sha256:e588fabd7480024515beb726b4b49be346a8431e8aab37c0a20e2ef58ec60ee7"],"state_sha256":"c767f9092578d3139cb08aaf55f8dbfa1de3c198902c496310b9aa5fa5d9b3a3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RNOZyCYad3S/S4r5U8bG7Ze0WpdlWtoXX//YNjM4L7dcsyoF5vROcYazCdNliyQuHzM3KXYXWv63aAo/N3QhCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T01:33:56.772145Z","bundle_sha256":"b41fa153ce1eb5486c9117e032a5204108f3ba332c9fcb94f2d60ee96be0dc20"}}