{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:VGRVEEXST2M7MJ3BHZU6C56Z4Z","short_pith_number":"pith:VGRVEEXS","canonical_record":{"source":{"id":"2606.25510","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-06-24T07:45:19Z","cross_cats_sorted":[],"title_canon_sha256":"744cd4133c40010c4ceab98162f2c8b87f891706876ce047b13d9b332bb82c7e","abstract_canon_sha256":"726950a8f1e70262f6756e3d54184abb686fe22ab9dec313b4aa3dff7453e7d2"},"schema_version":"1.0"},"canonical_sha256":"a9a35212f29e99f627613e69e177d9e65673984098ea0f283b7af895b530cc83","source":{"kind":"arxiv","id":"2606.25510","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.25510","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.25510v1","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.25510","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"pith_short_12","alias_value":"VGRVEEXST2M7","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"pith_short_16","alias_value":"VGRVEEXST2M7MJ3B","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"pith_short_8","alias_value":"VGRVEEXS","created_at":"2026-06-25T01:18:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:VGRVEEXST2M7MJ3BHZU6C56Z4Z","target":"record","payload":{"canonical_record":{"source":{"id":"2606.25510","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-06-24T07:45:19Z","cross_cats_sorted":[],"title_canon_sha256":"744cd4133c40010c4ceab98162f2c8b87f891706876ce047b13d9b332bb82c7e","abstract_canon_sha256":"726950a8f1e70262f6756e3d54184abb686fe22ab9dec313b4aa3dff7453e7d2"},"schema_version":"1.0"},"canonical_sha256":"a9a35212f29e99f627613e69e177d9e65673984098ea0f283b7af895b530cc83","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-25T01:18:07.418431Z","signature_b64":"o28tupnHKuuKjUnev/b7xJDPEEwrJ8ekmPkD0lw4ElWYPxNR20NtTHA8cHtWagXSU77f+RyRhbX0ycuaK72MDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9a35212f29e99f627613e69e177d9e65673984098ea0f283b7af895b530cc83","last_reissued_at":"2026-06-25T01:18:07.418067Z","signature_status":"signed_v1","first_computed_at":"2026-06-25T01:18:07.418067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.25510","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":"2026-06-25T01:18:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oX7hc9WcHbWFTTtsEvt8cTWC78w08qNdNslKBFJgXK63smHLE20J662Ds0DObApReeH+WdVFmUvVGPcQLSWpCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:24:17.347669Z"},"content_sha256":"bdc525556b384caef2a5142b8dfc1ea8ad339a71f9d10a1cf4e1a6b77a2ab209","schema_version":"1.0","event_id":"sha256:bdc525556b384caef2a5142b8dfc1ea8ad339a71f9d10a1cf4e1a6b77a2ab209"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:VGRVEEXST2M7MJ3BHZU6C56Z4Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum metrology of electric and magnetic dipole moments: ultimate limits and optimal regimes","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Matteo G.A. Paris, Paolo Bordone, Simone Cavazzoni","submitted_at":"2026-06-24T07:45:19Z","abstract_excerpt":"The characterization of electric and magnetic dipole moments (EDM and MDM) in quantum systems is central to fundamental physics and quantum sensing. While EDM searches provide powerful probes of CP violation within and beyond the Standard Model, precise MDM estimation is crucial for high-precision magnetometry and the development of quantum sensors. In this work, we address the ultimate precision limits for separate and simultaneous estimation of both dipole moments in a generic two-level system coupled to electromagnetic fields. We analyze three classes of quantum probes/strategies: unitary a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.25510","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.25510/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-25T01:18:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UT26qb36aqHOZKFU+mwDh774Km/bTqDm3ajKNUehE1s2DXS6RRHA6eJEm5tqTplYXohtVms0IJRtXy5vgFQgDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T13:24:17.348203Z"},"content_sha256":"a4f9411c62e7e5536d4eabd59ed24626ba3bf8728b4f833a805765059c9a2465","schema_version":"1.0","event_id":"sha256:a4f9411c62e7e5536d4eabd59ed24626ba3bf8728b4f833a805765059c9a2465"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z/bundle.json","state_url":"https://pith.science/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z/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":"2026-08-11T13:24:17Z","links":{"resolver":"https://pith.science/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z","bundle":"https://pith.science/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z/bundle.json","state":"https://pith.science/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VGRVEEXST2M7MJ3BHZU6C56Z4Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:VGRVEEXST2M7MJ3BHZU6C56Z4Z","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":"726950a8f1e70262f6756e3d54184abb686fe22ab9dec313b4aa3dff7453e7d2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-06-24T07:45:19Z","title_canon_sha256":"744cd4133c40010c4ceab98162f2c8b87f891706876ce047b13d9b332bb82c7e"},"schema_version":"1.0","source":{"id":"2606.25510","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.25510","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"arxiv_version","alias_value":"2606.25510v1","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.25510","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"pith_short_12","alias_value":"VGRVEEXST2M7","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"pith_short_16","alias_value":"VGRVEEXST2M7MJ3B","created_at":"2026-06-25T01:18:07Z"},{"alias_kind":"pith_short_8","alias_value":"VGRVEEXS","created_at":"2026-06-25T01:18:07Z"}],"graph_snapshots":[{"event_id":"sha256:a4f9411c62e7e5536d4eabd59ed24626ba3bf8728b4f833a805765059c9a2465","target":"graph","created_at":"2026-06-25T01:18:07Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.25510/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The characterization of electric and magnetic dipole moments (EDM and MDM) in quantum systems is central to fundamental physics and quantum sensing. While EDM searches provide powerful probes of CP violation within and beyond the Standard Model, precise MDM estimation is crucial for high-precision magnetometry and the development of quantum sensors. In this work, we address the ultimate precision limits for separate and simultaneous estimation of both dipole moments in a generic two-level system coupled to electromagnetic fields. We analyze three classes of quantum probes/strategies: unitary a","authors_text":"Matteo G.A. Paris, Paolo Bordone, Simone Cavazzoni","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-06-24T07:45:19Z","title":"Quantum metrology of electric and magnetic dipole moments: ultimate limits and optimal regimes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.25510","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:bdc525556b384caef2a5142b8dfc1ea8ad339a71f9d10a1cf4e1a6b77a2ab209","target":"record","created_at":"2026-06-25T01:18:07Z","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":"726950a8f1e70262f6756e3d54184abb686fe22ab9dec313b4aa3dff7453e7d2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-06-24T07:45:19Z","title_canon_sha256":"744cd4133c40010c4ceab98162f2c8b87f891706876ce047b13d9b332bb82c7e"},"schema_version":"1.0","source":{"id":"2606.25510","kind":"arxiv","version":1}},"canonical_sha256":"a9a35212f29e99f627613e69e177d9e65673984098ea0f283b7af895b530cc83","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a9a35212f29e99f627613e69e177d9e65673984098ea0f283b7af895b530cc83","first_computed_at":"2026-06-25T01:18:07.418067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-25T01:18:07.418067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o28tupnHKuuKjUnev/b7xJDPEEwrJ8ekmPkD0lw4ElWYPxNR20NtTHA8cHtWagXSU77f+RyRhbX0ycuaK72MDA==","signature_status":"signed_v1","signed_at":"2026-06-25T01:18:07.418431Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.25510","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bdc525556b384caef2a5142b8dfc1ea8ad339a71f9d10a1cf4e1a6b77a2ab209","sha256:a4f9411c62e7e5536d4eabd59ed24626ba3bf8728b4f833a805765059c9a2465"],"state_sha256":"cfc74e5971863b2d1cbbdcd03b1c70cd71a45329a470404a20fbb6d18a6d61a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SKJn+3Z4cWl2Nujaom5Z1x+DntlE+tpVoboPcHrmsmOfMzeBUxWeEN9vS5IhgQAZSEAmTQEdTe4d6xtkO3xiDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T13:24:17.353387Z","bundle_sha256":"c969730634f2e6bd1b23d7f1ded7ae6310ec928012581ed464b8d60f2564f854"}}