{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:CSLCODMO3LXAADBG4E46KME3Q2","short_pith_number":"pith:CSLCODMO","canonical_record":{"source":{"id":"1207.1585","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-06T11:09:36Z","cross_cats_sorted":[],"title_canon_sha256":"6995763b52d9f016044dae93a3e3ac14aec884093adc2084a6c1d8596722824a","abstract_canon_sha256":"14dcbdc69eeaee8a187ef2cbd2c877f46853a5b3b4f73e5406096b64ee17ba52"},"schema_version":"1.0"},"canonical_sha256":"1496270d8edaee000c26e139e5309b86bcdb13c66d5855015610db7f6eee22f8","source":{"kind":"arxiv","id":"1207.1585","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1585","created_at":"2026-05-18T03:29:27Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1585v1","created_at":"2026-05-18T03:29:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1585","created_at":"2026-05-18T03:29:27Z"},{"alias_kind":"pith_short_12","alias_value":"CSLCODMO3LXA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CSLCODMO3LXAADBG","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CSLCODMO","created_at":"2026-05-18T12:27:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:CSLCODMO3LXAADBG4E46KME3Q2","target":"record","payload":{"canonical_record":{"source":{"id":"1207.1585","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-06T11:09:36Z","cross_cats_sorted":[],"title_canon_sha256":"6995763b52d9f016044dae93a3e3ac14aec884093adc2084a6c1d8596722824a","abstract_canon_sha256":"14dcbdc69eeaee8a187ef2cbd2c877f46853a5b3b4f73e5406096b64ee17ba52"},"schema_version":"1.0"},"canonical_sha256":"1496270d8edaee000c26e139e5309b86bcdb13c66d5855015610db7f6eee22f8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:29:27.397816Z","signature_b64":"E9k04HiBjXz2csLnhFxrLwvncfv5gtgIp+2KKMykuN7KUlSRhql3MHUPEegU4fPHh3FruhvHAYL1/V/iI9RgAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1496270d8edaee000c26e139e5309b86bcdb13c66d5855015610db7f6eee22f8","last_reissued_at":"2026-05-18T03:29:27.396960Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:29:27.396960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1207.1585","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":"2026-05-18T03:29:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F4E3kA9l+QCm/9ueU46bCLj8OlzhhiUOvKbtEvNuW0gPBnQdVe+fDcj4R9uSrPE2iw4Iw5DZ9MVbcwTjY6nkDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T23:10:03.375529Z"},"content_sha256":"8a8cade540572e7f87a41a0ac2156863e68b4a44855c255faeb1233fde5f7114","schema_version":"1.0","event_id":"sha256:8a8cade540572e7f87a41a0ac2156863e68b4a44855c255faeb1233fde5f7114"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:CSLCODMO3LXAADBG4E46KME3Q2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-fidelity conversion of photonic quantum information to telecommunication wavelength with superconducting single-photon detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hiroshi Kato, Hirotaka Terai, Masahide Sasaki, Masato Koashi, Mikio Fujiwara, Nobuyuki Imoto, Rikizo Ikuta, Shigehito Miki, Takashi Yamamoto, Taro Yamashita, Yoshiaki Kusaka, Zhen Wang","submitted_at":"2012-07-06T11:09:36Z","abstract_excerpt":"We experimentally demonstrate a high-fidelity visible-to-telecommunication wavelength conversion of a photon by using a solid-state-based difference frequency generation. In the experiment, one half of a pico-second visible entangled photon pair at 780 nm is converted to a 1522-nm photon, resulting in the entangled photon pair between 780 nm and 1522 nm. Using superconducting single-photon detectors with low dark count rates and small timing jitters, we selectively observed well-defined temporal modes containing the two photons. We achieved a fidelity of $0.93 \\pm 0.04$ after the wavelength co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1585","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":"2026-05-18T03:29:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"98S+S9GP86E4XNuNwGsf97jApeFiBsZb6VF66tyYPOKfSq7Rs/Z1epsLJTbOMjGD1DkgSBgLPEcywfIu4nw0CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T23:10:03.376156Z"},"content_sha256":"f94b24960ea0eb163099fa7557e5c47e3495f8b502fb30c62030fb4d8a290cbf","schema_version":"1.0","event_id":"sha256:f94b24960ea0eb163099fa7557e5c47e3495f8b502fb30c62030fb4d8a290cbf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CSLCODMO3LXAADBG4E46KME3Q2/bundle.json","state_url":"https://pith.science/pith/CSLCODMO3LXAADBG4E46KME3Q2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CSLCODMO3LXAADBG4E46KME3Q2/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":"2026-05-21T23:10:03Z","links":{"resolver":"https://pith.science/pith/CSLCODMO3LXAADBG4E46KME3Q2","bundle":"https://pith.science/pith/CSLCODMO3LXAADBG4E46KME3Q2/bundle.json","state":"https://pith.science/pith/CSLCODMO3LXAADBG4E46KME3Q2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CSLCODMO3LXAADBG4E46KME3Q2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:CSLCODMO3LXAADBG4E46KME3Q2","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":"14dcbdc69eeaee8a187ef2cbd2c877f46853a5b3b4f73e5406096b64ee17ba52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-06T11:09:36Z","title_canon_sha256":"6995763b52d9f016044dae93a3e3ac14aec884093adc2084a6c1d8596722824a"},"schema_version":"1.0","source":{"id":"1207.1585","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1207.1585","created_at":"2026-05-18T03:29:27Z"},{"alias_kind":"arxiv_version","alias_value":"1207.1585v1","created_at":"2026-05-18T03:29:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.1585","created_at":"2026-05-18T03:29:27Z"},{"alias_kind":"pith_short_12","alias_value":"CSLCODMO3LXA","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_16","alias_value":"CSLCODMO3LXAADBG","created_at":"2026-05-18T12:27:01Z"},{"alias_kind":"pith_short_8","alias_value":"CSLCODMO","created_at":"2026-05-18T12:27:01Z"}],"graph_snapshots":[{"event_id":"sha256:f94b24960ea0eb163099fa7557e5c47e3495f8b502fb30c62030fb4d8a290cbf","target":"graph","created_at":"2026-05-18T03:29:27Z","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 experimentally demonstrate a high-fidelity visible-to-telecommunication wavelength conversion of a photon by using a solid-state-based difference frequency generation. In the experiment, one half of a pico-second visible entangled photon pair at 780 nm is converted to a 1522-nm photon, resulting in the entangled photon pair between 780 nm and 1522 nm. Using superconducting single-photon detectors with low dark count rates and small timing jitters, we selectively observed well-defined temporal modes containing the two photons. We achieved a fidelity of $0.93 \\pm 0.04$ after the wavelength co","authors_text":"Hiroshi Kato, Hirotaka Terai, Masahide Sasaki, Masato Koashi, Mikio Fujiwara, Nobuyuki Imoto, Rikizo Ikuta, Shigehito Miki, Takashi Yamamoto, Taro Yamashita, Yoshiaki Kusaka, Zhen Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-06T11:09:36Z","title":"High-fidelity conversion of photonic quantum information to telecommunication wavelength with superconducting single-photon detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.1585","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":"sha256:8a8cade540572e7f87a41a0ac2156863e68b4a44855c255faeb1233fde5f7114","target":"record","created_at":"2026-05-18T03:29:27Z","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":"14dcbdc69eeaee8a187ef2cbd2c877f46853a5b3b4f73e5406096b64ee17ba52","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-06T11:09:36Z","title_canon_sha256":"6995763b52d9f016044dae93a3e3ac14aec884093adc2084a6c1d8596722824a"},"schema_version":"1.0","source":{"id":"1207.1585","kind":"arxiv","version":1}},"canonical_sha256":"1496270d8edaee000c26e139e5309b86bcdb13c66d5855015610db7f6eee22f8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1496270d8edaee000c26e139e5309b86bcdb13c66d5855015610db7f6eee22f8","first_computed_at":"2026-05-18T03:29:27.396960Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:29:27.396960Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"E9k04HiBjXz2csLnhFxrLwvncfv5gtgIp+2KKMykuN7KUlSRhql3MHUPEegU4fPHh3FruhvHAYL1/V/iI9RgAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:29:27.397816Z","signed_message":"canonical_sha256_bytes"},"source_id":"1207.1585","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a8cade540572e7f87a41a0ac2156863e68b4a44855c255faeb1233fde5f7114","sha256:f94b24960ea0eb163099fa7557e5c47e3495f8b502fb30c62030fb4d8a290cbf"],"state_sha256":"d179fedfecc63de5a89fbe9d02b94cd0baa3e7441046113c2cd5e0798b90a712"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OCYTjOt+nPQnn5rpHnX0/oYXK8Vyud9JsDv68J/bKrTF1fTE5oEuOmX7KvIiAbbLIXaIB0T+b8O2DCt9NIL6Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T23:10:03.378271Z","bundle_sha256":"487a8b91dfde401b3201f1caf704b306f9080971860aca8e7e796d99643f802b"}}