{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:EWYDCBWGWFVKLRYN3ABR2Y3GKJ","short_pith_number":"pith:EWYDCBWG","canonical_record":{"source":{"id":"1402.1678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-02-07T16:06:52Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"5428e8db03722f665170ebf611cea0b7c3997868175e19b8a1b781d0c6a09cb2","abstract_canon_sha256":"3454aa1ddadb8e5bb2f46c64242e27819e52a210b35a9a010e1dc2caebb4d2ad"},"schema_version":"1.0"},"canonical_sha256":"25b03106c6b16aa5c70dd8031d636652506bc4efc25f69a1cb52b70aefdea3da","source":{"kind":"arxiv","id":"1402.1678","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1678","created_at":"2026-05-18T02:55:47Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1678v1","created_at":"2026-05-18T02:55:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1678","created_at":"2026-05-18T02:55:47Z"},{"alias_kind":"pith_short_12","alias_value":"EWYDCBWGWFVK","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"EWYDCBWGWFVKLRYN","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"EWYDCBWG","created_at":"2026-05-18T12:28:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:EWYDCBWGWFVKLRYN3ABR2Y3GKJ","target":"record","payload":{"canonical_record":{"source":{"id":"1402.1678","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-02-07T16:06:52Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"5428e8db03722f665170ebf611cea0b7c3997868175e19b8a1b781d0c6a09cb2","abstract_canon_sha256":"3454aa1ddadb8e5bb2f46c64242e27819e52a210b35a9a010e1dc2caebb4d2ad"},"schema_version":"1.0"},"canonical_sha256":"25b03106c6b16aa5c70dd8031d636652506bc4efc25f69a1cb52b70aefdea3da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:55:47.924481Z","signature_b64":"poQLLFukWycIHn1358sxcqSoKE36anfN0tyt8NUKlvquH6i0n7hv7r9qF0Q3Gn6RT6LLumVtoygJSIXeGxEVAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"25b03106c6b16aa5c70dd8031d636652506bc4efc25f69a1cb52b70aefdea3da","last_reissued_at":"2026-05-18T02:55:47.923764Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:55:47.923764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.1678","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":"2026-05-18T02:55:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MjRbyMs8H2tkEmiaMyBmBqxIK9zZpfppBFM1xrQBpgm8P+AaOaMdmWHDd9pPvsxwfBYetMyYyElp71lgcmRlDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:35:31.112274Z"},"content_sha256":"5d5405e85793b05cbe4fe70ca9f7f0cbac6f34191684015ad543fa4b99a104f1","schema_version":"1.0","event_id":"sha256:5d5405e85793b05cbe4fe70ca9f7f0cbac6f34191684015ad543fa4b99a104f1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:EWYDCBWGWFVKLRYN3ABR2Y3GKJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decoherence-assisted spectroscopy of a single Mg$^+$ ion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Dietrich Leibfried, Govinda Clos, Martin Enderlein, Tobias Schaetz, Ulrich Warring","submitted_at":"2014-02-07T16:06:52Z","abstract_excerpt":"We describe a high-resolution spectroscopy method, in which the detection of single excitation events is enhanced by a complete loss of coherence of a superposition of two ground states. Thereby, transitions of a single isolated atom nearly at rest are recorded efficiently with high signal-to-noise ratios. Spectra display symmetric line shapes without stray-light background from spectroscopy probes. We employ this method on a $^{25}$Mg$^+$ ion to measure one, two, and three-photon transition frequencies from the 3S ground state to the 3P, 3D, and 4P excited states, respectively. Our results ar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1678","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":"2026-05-18T02:55:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufWug8+f4JegcgJRHqoMQ/H1v1aR7WoJlriX5QLmN7n0g9SMm9t3qNqORT58oCkLIlCWy2p3QkMvLFIT13ZsDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:35:31.113042Z"},"content_sha256":"682d63b2e06b15602f51d649edfd6e2ed0be6555d415976d5dea5f6504375b20","schema_version":"1.0","event_id":"sha256:682d63b2e06b15602f51d649edfd6e2ed0be6555d415976d5dea5f6504375b20"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ/bundle.json","state_url":"https://pith.science/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ/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":"2026-05-31T16:35:31Z","links":{"resolver":"https://pith.science/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ","bundle":"https://pith.science/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ/bundle.json","state":"https://pith.science/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EWYDCBWGWFVKLRYN3ABR2Y3GKJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:EWYDCBWGWFVKLRYN3ABR2Y3GKJ","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":"3454aa1ddadb8e5bb2f46c64242e27819e52a210b35a9a010e1dc2caebb4d2ad","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-02-07T16:06:52Z","title_canon_sha256":"5428e8db03722f665170ebf611cea0b7c3997868175e19b8a1b781d0c6a09cb2"},"schema_version":"1.0","source":{"id":"1402.1678","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1678","created_at":"2026-05-18T02:55:47Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1678v1","created_at":"2026-05-18T02:55:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1678","created_at":"2026-05-18T02:55:47Z"},{"alias_kind":"pith_short_12","alias_value":"EWYDCBWGWFVK","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"EWYDCBWGWFVKLRYN","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"EWYDCBWG","created_at":"2026-05-18T12:28:28Z"}],"graph_snapshots":[{"event_id":"sha256:682d63b2e06b15602f51d649edfd6e2ed0be6555d415976d5dea5f6504375b20","target":"graph","created_at":"2026-05-18T02:55:47Z","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 describe a high-resolution spectroscopy method, in which the detection of single excitation events is enhanced by a complete loss of coherence of a superposition of two ground states. Thereby, transitions of a single isolated atom nearly at rest are recorded efficiently with high signal-to-noise ratios. Spectra display symmetric line shapes without stray-light background from spectroscopy probes. We employ this method on a $^{25}$Mg$^+$ ion to measure one, two, and three-photon transition frequencies from the 3S ground state to the 3P, 3D, and 4P excited states, respectively. Our results ar","authors_text":"Dietrich Leibfried, Govinda Clos, Martin Enderlein, Tobias Schaetz, Ulrich Warring","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-02-07T16:06:52Z","title":"Decoherence-assisted spectroscopy of a single Mg$^+$ ion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1678","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":"sha256:5d5405e85793b05cbe4fe70ca9f7f0cbac6f34191684015ad543fa4b99a104f1","target":"record","created_at":"2026-05-18T02:55:47Z","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":"3454aa1ddadb8e5bb2f46c64242e27819e52a210b35a9a010e1dc2caebb4d2ad","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2014-02-07T16:06:52Z","title_canon_sha256":"5428e8db03722f665170ebf611cea0b7c3997868175e19b8a1b781d0c6a09cb2"},"schema_version":"1.0","source":{"id":"1402.1678","kind":"arxiv","version":1}},"canonical_sha256":"25b03106c6b16aa5c70dd8031d636652506bc4efc25f69a1cb52b70aefdea3da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25b03106c6b16aa5c70dd8031d636652506bc4efc25f69a1cb52b70aefdea3da","first_computed_at":"2026-05-18T02:55:47.923764Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:55:47.923764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"poQLLFukWycIHn1358sxcqSoKE36anfN0tyt8NUKlvquH6i0n7hv7r9qF0Q3Gn6RT6LLumVtoygJSIXeGxEVAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:55:47.924481Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.1678","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5d5405e85793b05cbe4fe70ca9f7f0cbac6f34191684015ad543fa4b99a104f1","sha256:682d63b2e06b15602f51d649edfd6e2ed0be6555d415976d5dea5f6504375b20"],"state_sha256":"0efcaa754d82017ed729013f282ec788cd10794ba9b4bae358e5d7f9b56fc086"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QmOvHtTNoPbZda1Hp6vn3uWB/KTvlm24MjMn1pHk2uj0R8MMXwYEcueeJX29ASqKfFgzCtbQLZQPCh0X8zzeCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:35:31.117556Z","bundle_sha256":"819fd133ff77eace51ed68c1a97d86fbf2a07f86b0fee0f656d63dadc193e033"}}