{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:5YLSSN7GGJDABS6CPN44RTU5ZL","short_pith_number":"pith:5YLSSN7G","canonical_record":{"source":{"id":"1712.07429","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-20T11:49:33Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"4eec47664cdeebfa89f2663e30af4f7734a997075b502f150b92b5dc018f3175","abstract_canon_sha256":"7341e4cf7f8501559c3e515d694303c0a86e029729d1a9629aef0f39594605c3"},"schema_version":"1.0"},"canonical_sha256":"ee172937e6324600cbc27b79c8ce9dcae9fc0cff523138cdcad7e92dbcfe5270","source":{"kind":"arxiv","id":"1712.07429","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07429","created_at":"2026-05-18T00:12:48Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07429v2","created_at":"2026-05-18T00:12:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07429","created_at":"2026-05-18T00:12:48Z"},{"alias_kind":"pith_short_12","alias_value":"5YLSSN7GGJDA","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"5YLSSN7GGJDABS6C","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"5YLSSN7G","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:5YLSSN7GGJDABS6CPN44RTU5ZL","target":"record","payload":{"canonical_record":{"source":{"id":"1712.07429","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-20T11:49:33Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"4eec47664cdeebfa89f2663e30af4f7734a997075b502f150b92b5dc018f3175","abstract_canon_sha256":"7341e4cf7f8501559c3e515d694303c0a86e029729d1a9629aef0f39594605c3"},"schema_version":"1.0"},"canonical_sha256":"ee172937e6324600cbc27b79c8ce9dcae9fc0cff523138cdcad7e92dbcfe5270","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:48.507795Z","signature_b64":"BaWTbRXwBDC+PPexH5nOFpMo2R/Di4+3BO1uGXDgwavs7Sm4lhH8MQsuDeBEV9T3tVSceQ7U7+NNRRmyXj+NCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ee172937e6324600cbc27b79c8ce9dcae9fc0cff523138cdcad7e92dbcfe5270","last_reissued_at":"2026-05-18T00:12:48.507287Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:48.507287Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.07429","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":"2026-05-18T00:12:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kl9Kvhtys1u9Zd2CS8RvZV4APJ2Rye+7uZhYKsXIWUUfsIi8JZrcLOw+/seudI6z2aDHBitMtUtmqkaglDZxAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:30:50.242142Z"},"content_sha256":"426cbf956b77e79ad5e49ed4c9f7667db34248a20fe68a9d90d27a6c0cce354f","schema_version":"1.0","event_id":"sha256:426cbf956b77e79ad5e49ed4c9f7667db34248a20fe68a9d90d27a6c0cce354f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:5YLSSN7GGJDABS6CPN44RTU5ZL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Direct frequency-comb-driven Raman transitions in the terahertz range","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Cyrille Solaro, Karin Fisher, Michael Drewsen, Michael V. DePalatis, Steffen Meyer","submitted_at":"2017-12-20T11:49:33Z","abstract_excerpt":"We demonstrate the use of a femtosecond frequency comb to coherently drive stimulated Raman transitions between terahertz-spaced atomic energy levels. More specifically, we address the $3d~^2D_{3/2}$ and $3d~^2D_{5/2}$ fine structure levels of a single trapped $^{40}$Ca$^+$ ion and spectroscopically resolve the transition frequency to be $\\nu_D = 1{,}819{,}599{,}021{,}534 \\pm 8$ Hz. The achieved accuracy is nearly a factor of five better than the previous best Raman spectroscopy, and is currently limited by the stability of our atomic clock reference. Furthermore, the population dynamics of fr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07429","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":"2026-05-18T00:12:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6UwQjFu5t4lpEtwx5vzkIjYZTirxBDDl9puG324vaKVaGTpMyz8zh2z7UDYckpdbKGdNEexm86HtPT1rNLMiAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:30:50.242511Z"},"content_sha256":"7ce21266e695bfd685b9d08a9ba682a1f9151530928c76373056fcf03b0cd72d","schema_version":"1.0","event_id":"sha256:7ce21266e695bfd685b9d08a9ba682a1f9151530928c76373056fcf03b0cd72d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5YLSSN7GGJDABS6CPN44RTU5ZL/bundle.json","state_url":"https://pith.science/pith/5YLSSN7GGJDABS6CPN44RTU5ZL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5YLSSN7GGJDABS6CPN44RTU5ZL/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":"2026-06-03T17:30:50Z","links":{"resolver":"https://pith.science/pith/5YLSSN7GGJDABS6CPN44RTU5ZL","bundle":"https://pith.science/pith/5YLSSN7GGJDABS6CPN44RTU5ZL/bundle.json","state":"https://pith.science/pith/5YLSSN7GGJDABS6CPN44RTU5ZL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5YLSSN7GGJDABS6CPN44RTU5ZL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:5YLSSN7GGJDABS6CPN44RTU5ZL","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":"7341e4cf7f8501559c3e515d694303c0a86e029729d1a9629aef0f39594605c3","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-20T11:49:33Z","title_canon_sha256":"4eec47664cdeebfa89f2663e30af4f7734a997075b502f150b92b5dc018f3175"},"schema_version":"1.0","source":{"id":"1712.07429","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07429","created_at":"2026-05-18T00:12:48Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07429v2","created_at":"2026-05-18T00:12:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07429","created_at":"2026-05-18T00:12:48Z"},{"alias_kind":"pith_short_12","alias_value":"5YLSSN7GGJDA","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"5YLSSN7GGJDABS6C","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"5YLSSN7G","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:7ce21266e695bfd685b9d08a9ba682a1f9151530928c76373056fcf03b0cd72d","target":"graph","created_at":"2026-05-18T00:12:48Z","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 the use of a femtosecond frequency comb to coherently drive stimulated Raman transitions between terahertz-spaced atomic energy levels. More specifically, we address the $3d~^2D_{3/2}$ and $3d~^2D_{5/2}$ fine structure levels of a single trapped $^{40}$Ca$^+$ ion and spectroscopically resolve the transition frequency to be $\\nu_D = 1{,}819{,}599{,}021{,}534 \\pm 8$ Hz. The achieved accuracy is nearly a factor of five better than the previous best Raman spectroscopy, and is currently limited by the stability of our atomic clock reference. Furthermore, the population dynamics of fr","authors_text":"Cyrille Solaro, Karin Fisher, Michael Drewsen, Michael V. DePalatis, Steffen Meyer","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-20T11:49:33Z","title":"Direct frequency-comb-driven Raman transitions in the terahertz range"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07429","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":"sha256:426cbf956b77e79ad5e49ed4c9f7667db34248a20fe68a9d90d27a6c0cce354f","target":"record","created_at":"2026-05-18T00:12:48Z","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":"7341e4cf7f8501559c3e515d694303c0a86e029729d1a9629aef0f39594605c3","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-20T11:49:33Z","title_canon_sha256":"4eec47664cdeebfa89f2663e30af4f7734a997075b502f150b92b5dc018f3175"},"schema_version":"1.0","source":{"id":"1712.07429","kind":"arxiv","version":2}},"canonical_sha256":"ee172937e6324600cbc27b79c8ce9dcae9fc0cff523138cdcad7e92dbcfe5270","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ee172937e6324600cbc27b79c8ce9dcae9fc0cff523138cdcad7e92dbcfe5270","first_computed_at":"2026-05-18T00:12:48.507287Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:48.507287Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BaWTbRXwBDC+PPexH5nOFpMo2R/Di4+3BO1uGXDgwavs7Sm4lhH8MQsuDeBEV9T3tVSceQ7U7+NNRRmyXj+NCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:48.507795Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.07429","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:426cbf956b77e79ad5e49ed4c9f7667db34248a20fe68a9d90d27a6c0cce354f","sha256:7ce21266e695bfd685b9d08a9ba682a1f9151530928c76373056fcf03b0cd72d"],"state_sha256":"27d97fc278632516395d1930dec101b3b08fe1be31e0c3a3b6defcf07576f144"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ycHJLNDvtEtgU0aX+Gkat/JzscLnFF1oVrGGw1TwSTAUsAxd6FAVosJUV8AbU/4ji1FlkyAsv7gZLNjeKatSDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:30:50.244567Z","bundle_sha256":"91ba59bb11d37b7b17de53623ce515a1822c0821acd94a3242ba0ed1dbfe7987"}}