{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:FZY24U7MFIWDMD5N7ZJQQZQLZ7","short_pith_number":"pith:FZY24U7M","canonical_record":{"source":{"id":"1711.09644","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T12:21:08Z","cross_cats_sorted":[],"title_canon_sha256":"4a6cb80cc32e2a18b42922dfa41a60fec766594563a6d1d7540de3ae6b5b7b2f","abstract_canon_sha256":"97b04d00932e47ca48c2ac33a1125a7d4874dca6ea63e7f5e6b1d207b88ee83b"},"schema_version":"1.0"},"canonical_sha256":"2e71ae53ec2a2c360fadfe5308660bcfc0d0dcfbed4979b60d6736f778aeb184","source":{"kind":"arxiv","id":"1711.09644","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.09644","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"arxiv_version","alias_value":"1711.09644v2","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.09644","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"pith_short_12","alias_value":"FZY24U7MFIWD","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FZY24U7MFIWDMD5N","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FZY24U7M","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:FZY24U7MFIWDMD5N7ZJQQZQLZ7","target":"record","payload":{"canonical_record":{"source":{"id":"1711.09644","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T12:21:08Z","cross_cats_sorted":[],"title_canon_sha256":"4a6cb80cc32e2a18b42922dfa41a60fec766594563a6d1d7540de3ae6b5b7b2f","abstract_canon_sha256":"97b04d00932e47ca48c2ac33a1125a7d4874dca6ea63e7f5e6b1d207b88ee83b"},"schema_version":"1.0"},"canonical_sha256":"2e71ae53ec2a2c360fadfe5308660bcfc0d0dcfbed4979b60d6736f778aeb184","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:15:19.819792Z","signature_b64":"Nycls0DRTB25GqmxDVG3ny1iXLNI2oUGdmVukYCUPVYsTMPTs5driydwWb8xoUcYmI4vIIAoB3aQ8UO05KZHBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e71ae53ec2a2c360fadfe5308660bcfc0d0dcfbed4979b60d6736f778aeb184","last_reissued_at":"2026-05-18T00:15:19.819140Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:15:19.819140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.09644","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:15:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ud284W1sem+/Pqu6UNAb9xjajoyjsqQ7XI/GRyPmbhwUt+jiYa8I5oNyR4iREq+hGffKGLErYsmlf93HScz6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T01:57:14.666482Z"},"content_sha256":"90bff9e5b370a1cd22b407de919589774d86acddf8124c0bca16861875352008","schema_version":"1.0","event_id":"sha256:90bff9e5b370a1cd22b407de919589774d86acddf8124c0bca16861875352008"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:FZY24U7MFIWDMD5N7ZJQQZQLZ7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Long-distance single photon transmission from a trapped ion via quantum frequency conversion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hiroki Takahashi, Kazuhiro Hayasaka, Koichiro Miyanishi, Matthias Keller, Nobuyuki Imoto, Rikizo Ikuta, Samir Vartabi Kashanian, Takashi Yamamoto, Thomas Walker, Yoshiaki Tsujimoto","submitted_at":"2017-11-27T12:21:08Z","abstract_excerpt":"Trapped atomic ions are ideal single photon emitters with long lived internal states which can be entangled with emitted photons. Coupling the ion to an optical cavity enables efficient emission of single photons into a single spatial mode and grants control over their temporal shape. These features are key for quantum information processing and quantum communication. However, the photons emitted by these systems are unsuitable for long-distance transmission due to their wavelengths. Here we report the transmission of single photons from a single $^{40}\\text{Ca}^{+}$ ion coupled to an optical "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.09644","kind":"arxiv","version":2},"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":"2026-05-18T00:15:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zzh1cyZvj3T5NXLUTk3MxkdiiuMJQ1vzQFFmixpF4Xk/SDa7A4V9oeMoQzUtMxXkmlOPMgKw+CyPjQiTfc7YBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T01:57:14.666965Z"},"content_sha256":"db38faca984b4dc359a3c7b3578a33629ec932e58b57ba7d575f0f18b18f56af","schema_version":"1.0","event_id":"sha256:db38faca984b4dc359a3c7b3578a33629ec932e58b57ba7d575f0f18b18f56af"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7/bundle.json","state_url":"https://pith.science/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7/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":"2026-05-22T01:57:14Z","links":{"resolver":"https://pith.science/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7","bundle":"https://pith.science/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7/bundle.json","state":"https://pith.science/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FZY24U7MFIWDMD5N7ZJQQZQLZ7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:FZY24U7MFIWDMD5N7ZJQQZQLZ7","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":"97b04d00932e47ca48c2ac33a1125a7d4874dca6ea63e7f5e6b1d207b88ee83b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T12:21:08Z","title_canon_sha256":"4a6cb80cc32e2a18b42922dfa41a60fec766594563a6d1d7540de3ae6b5b7b2f"},"schema_version":"1.0","source":{"id":"1711.09644","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.09644","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"arxiv_version","alias_value":"1711.09644v2","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.09644","created_at":"2026-05-18T00:15:19Z"},{"alias_kind":"pith_short_12","alias_value":"FZY24U7MFIWD","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FZY24U7MFIWDMD5N","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FZY24U7M","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:db38faca984b4dc359a3c7b3578a33629ec932e58b57ba7d575f0f18b18f56af","target":"graph","created_at":"2026-05-18T00:15:19Z","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":"Trapped atomic ions are ideal single photon emitters with long lived internal states which can be entangled with emitted photons. Coupling the ion to an optical cavity enables efficient emission of single photons into a single spatial mode and grants control over their temporal shape. These features are key for quantum information processing and quantum communication. However, the photons emitted by these systems are unsuitable for long-distance transmission due to their wavelengths. Here we report the transmission of single photons from a single $^{40}\\text{Ca}^{+}$ ion coupled to an optical ","authors_text":"Hiroki Takahashi, Kazuhiro Hayasaka, Koichiro Miyanishi, Matthias Keller, Nobuyuki Imoto, Rikizo Ikuta, Samir Vartabi Kashanian, Takashi Yamamoto, Thomas Walker, Yoshiaki Tsujimoto","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T12:21:08Z","title":"Long-distance single photon transmission from a trapped ion via quantum frequency conversion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.09644","kind":"arxiv","version":2},"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":"sha256:90bff9e5b370a1cd22b407de919589774d86acddf8124c0bca16861875352008","target":"record","created_at":"2026-05-18T00:15:19Z","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":"97b04d00932e47ca48c2ac33a1125a7d4874dca6ea63e7f5e6b1d207b88ee83b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-27T12:21:08Z","title_canon_sha256":"4a6cb80cc32e2a18b42922dfa41a60fec766594563a6d1d7540de3ae6b5b7b2f"},"schema_version":"1.0","source":{"id":"1711.09644","kind":"arxiv","version":2}},"canonical_sha256":"2e71ae53ec2a2c360fadfe5308660bcfc0d0dcfbed4979b60d6736f778aeb184","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2e71ae53ec2a2c360fadfe5308660bcfc0d0dcfbed4979b60d6736f778aeb184","first_computed_at":"2026-05-18T00:15:19.819140Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:15:19.819140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Nycls0DRTB25GqmxDVG3ny1iXLNI2oUGdmVukYCUPVYsTMPTs5driydwWb8xoUcYmI4vIIAoB3aQ8UO05KZHBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:15:19.819792Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.09644","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90bff9e5b370a1cd22b407de919589774d86acddf8124c0bca16861875352008","sha256:db38faca984b4dc359a3c7b3578a33629ec932e58b57ba7d575f0f18b18f56af"],"state_sha256":"b3b900e74506ff8bb3167e7ce91ba70752a82a315cc49e165a9bb059a1bfe8d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G2SkpVwHYnhH1yBHUiFjCQm1DJSt7GNMI9ZlHp9R/n5QN47bETMPk531NyMK00Da32Mh5BSNXouqoyjv6g4rAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T01:57:14.670644Z","bundle_sha256":"aae0037572732f6138ae251fd788a7a52cc9dc94d1de364c1636912a31046034"}}