{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ZOLER342BSLCSXYCJ7DE3BU5ZG","short_pith_number":"pith:ZOLER342","canonical_record":{"source":{"id":"1605.01286","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2016-05-04T14:09:28Z","cross_cats_sorted":[],"title_canon_sha256":"163666e1d7ea2ac4d4d3f89c89dfc633a18d74e61b3f66e1465de12bb2393390","abstract_canon_sha256":"4d78e06c557b27e526b608719e3213d279a75d3626ea25949379b4ec4345f2e8"},"schema_version":"1.0"},"canonical_sha256":"cb9648ef9a0c96295f024fc64d869dc9b9ee968c614e1e57faa35c8e2938768b","source":{"kind":"arxiv","id":"1605.01286","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01286","created_at":"2026-05-18T01:15:37Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01286v1","created_at":"2026-05-18T01:15:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01286","created_at":"2026-05-18T01:15:37Z"},{"alias_kind":"pith_short_12","alias_value":"ZOLER342BSLC","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZOLER342BSLCSXYC","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZOLER342","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ZOLER342BSLCSXYCJ7DE3BU5ZG","target":"record","payload":{"canonical_record":{"source":{"id":"1605.01286","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2016-05-04T14:09:28Z","cross_cats_sorted":[],"title_canon_sha256":"163666e1d7ea2ac4d4d3f89c89dfc633a18d74e61b3f66e1465de12bb2393390","abstract_canon_sha256":"4d78e06c557b27e526b608719e3213d279a75d3626ea25949379b4ec4345f2e8"},"schema_version":"1.0"},"canonical_sha256":"cb9648ef9a0c96295f024fc64d869dc9b9ee968c614e1e57faa35c8e2938768b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:15:37.268830Z","signature_b64":"x+GSKbj52VpY6p3JTRBcm18b1ACUzifiRX2RIn2U5HqQgL/C+APN1a+0n790YaIs0DjZem2eBzJbp7CVDi4ZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb9648ef9a0c96295f024fc64d869dc9b9ee968c614e1e57faa35c8e2938768b","last_reissued_at":"2026-05-18T01:15:37.268117Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:15:37.268117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.01286","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":"2026-05-18T01:15:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8Ife8m9ATwKlJXVhKiMXDFUBUg8QUGCa+TQZqpyVL6lSZJCRjL+LjwicJdRK+735x7NBfW9D6apaNRno+n8qBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T01:41:12.515688Z"},"content_sha256":"d6af734e58041c33f27c89c124db4cdeba2f3cd91122ded4cc45dfd6d64ae7d8","schema_version":"1.0","event_id":"sha256:d6af734e58041c33f27c89c124db4cdeba2f3cd91122ded4cc45dfd6d64ae7d8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ZOLER342BSLCSXYCJ7DE3BU5ZG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An efficient source of frequency anti-correlated entanglement at telecom wavelength","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Feiyan Hou, Mengmeng Wang, Ruifang Dong, Runai Quan, Shaofeng Wang, Shougang Zhang, Tao Liu, Xiao Xiang, Yiwei Zhai","submitted_at":"2016-05-04T14:09:28Z","abstract_excerpt":"We demonstrate an efficient generation of frequency anti-correlated entangled photon pairs at telecom wavelength. The fundamental laser is a continuous-wave high-power fiber laser at 1560 nm, through an extracavity frequency doubling system, a 780-nm pump with a power as high as 742 mW is realized. After single passing through a periodically poled KTiOPO4 (PPKTP) crystal, degenerate down-converted photon pairs are generated. With an overall detection efficiency of 14.8 %, the count rates of the single photons and coincidence of the photon pairs are measured to be 370 kHz and 22 kHz, respective"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01286","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":"2026-05-18T01:15:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yTNYZNQGDKTZtwKuCT0uP0+P9A7kbs8n13mT23+w0hs44iqJTYqfCzlTm6649P+XQDjnsJejYH2EAueZLM9xBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T01:41:12.516037Z"},"content_sha256":"a9302669527a4d515127321365a9084d57b5b9bf84ce3c6578273e52e1d0fac4","schema_version":"1.0","event_id":"sha256:a9302669527a4d515127321365a9084d57b5b9bf84ce3c6578273e52e1d0fac4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG/bundle.json","state_url":"https://pith.science/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG/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":"2026-06-20T01:41:12Z","links":{"resolver":"https://pith.science/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG","bundle":"https://pith.science/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG/bundle.json","state":"https://pith.science/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZOLER342BSLCSXYCJ7DE3BU5ZG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZOLER342BSLCSXYCJ7DE3BU5ZG","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":"4d78e06c557b27e526b608719e3213d279a75d3626ea25949379b4ec4345f2e8","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2016-05-04T14:09:28Z","title_canon_sha256":"163666e1d7ea2ac4d4d3f89c89dfc633a18d74e61b3f66e1465de12bb2393390"},"schema_version":"1.0","source":{"id":"1605.01286","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.01286","created_at":"2026-05-18T01:15:37Z"},{"alias_kind":"arxiv_version","alias_value":"1605.01286v1","created_at":"2026-05-18T01:15:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.01286","created_at":"2026-05-18T01:15:37Z"},{"alias_kind":"pith_short_12","alias_value":"ZOLER342BSLC","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZOLER342BSLCSXYC","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZOLER342","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:a9302669527a4d515127321365a9084d57b5b9bf84ce3c6578273e52e1d0fac4","target":"graph","created_at":"2026-05-18T01:15:37Z","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 demonstrate an efficient generation of frequency anti-correlated entangled photon pairs at telecom wavelength. The fundamental laser is a continuous-wave high-power fiber laser at 1560 nm, through an extracavity frequency doubling system, a 780-nm pump with a power as high as 742 mW is realized. After single passing through a periodically poled KTiOPO4 (PPKTP) crystal, degenerate down-converted photon pairs are generated. With an overall detection efficiency of 14.8 %, the count rates of the single photons and coincidence of the photon pairs are measured to be 370 kHz and 22 kHz, respective","authors_text":"Feiyan Hou, Mengmeng Wang, Ruifang Dong, Runai Quan, Shaofeng Wang, Shougang Zhang, Tao Liu, Xiao Xiang, Yiwei Zhai","cross_cats":[],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2016-05-04T14:09:28Z","title":"An efficient source of frequency anti-correlated entanglement at telecom wavelength"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.01286","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:d6af734e58041c33f27c89c124db4cdeba2f3cd91122ded4cc45dfd6d64ae7d8","target":"record","created_at":"2026-05-18T01:15:37Z","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":"4d78e06c557b27e526b608719e3213d279a75d3626ea25949379b4ec4345f2e8","cross_cats_sorted":[],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"quant-ph","submitted_at":"2016-05-04T14:09:28Z","title_canon_sha256":"163666e1d7ea2ac4d4d3f89c89dfc633a18d74e61b3f66e1465de12bb2393390"},"schema_version":"1.0","source":{"id":"1605.01286","kind":"arxiv","version":1}},"canonical_sha256":"cb9648ef9a0c96295f024fc64d869dc9b9ee968c614e1e57faa35c8e2938768b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb9648ef9a0c96295f024fc64d869dc9b9ee968c614e1e57faa35c8e2938768b","first_computed_at":"2026-05-18T01:15:37.268117Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:15:37.268117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x+GSKbj52VpY6p3JTRBcm18b1ACUzifiRX2RIn2U5HqQgL/C+APN1a+0n790YaIs0DjZem2eBzJbp7CVDi4ZDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:15:37.268830Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.01286","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d6af734e58041c33f27c89c124db4cdeba2f3cd91122ded4cc45dfd6d64ae7d8","sha256:a9302669527a4d515127321365a9084d57b5b9bf84ce3c6578273e52e1d0fac4"],"state_sha256":"e96cc33ac61f1ae30fe9e0a829e1aeabd1266128618d88f875e86366627b34e3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B+pdP7OJkc7LVne0G9CtN2US7cAyzvDHPfQ9si+xa2pH2Pjq7FXwZDmNYLvVWQ61LrVlJwE7ivP+bhaDClg/CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T01:41:12.517918Z","bundle_sha256":"6432f0755e7d89ce0d3b8f2b604c279db9cba61018ad87a18425c0136c4b9f96"}}