{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:AGSAQVIPSDCIOFPJV22AMBG723","short_pith_number":"pith:AGSAQVIP","canonical_record":{"source":{"id":"2511.16645","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-11-20T18:51:18Z","cross_cats_sorted":[],"title_canon_sha256":"52a6e6dfa99bc2e7445b5f4138992cdf7b8f662aa914f3b28ef96f40c4fc2e6a","abstract_canon_sha256":"cd43c497eada368f2cf9eb51b061bdec4fa35c6620fad52a56f0805cf6c5cb97"},"schema_version":"1.0"},"canonical_sha256":"01a408550f90c48715e9aeb40604dfd6e8102bb93d87f4c490169094b36546bc","source":{"kind":"arxiv","id":"2511.16645","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.16645","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"arxiv_version","alias_value":"2511.16645v3","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.16645","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"pith_short_12","alias_value":"AGSAQVIPSDCI","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"pith_short_16","alias_value":"AGSAQVIPSDCIOFPJ","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"pith_short_8","alias_value":"AGSAQVIP","created_at":"2026-05-28T01:04:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:AGSAQVIPSDCIOFPJV22AMBG723","target":"record","payload":{"canonical_record":{"source":{"id":"2511.16645","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-11-20T18:51:18Z","cross_cats_sorted":[],"title_canon_sha256":"52a6e6dfa99bc2e7445b5f4138992cdf7b8f662aa914f3b28ef96f40c4fc2e6a","abstract_canon_sha256":"cd43c497eada368f2cf9eb51b061bdec4fa35c6620fad52a56f0805cf6c5cb97"},"schema_version":"1.0"},"canonical_sha256":"01a408550f90c48715e9aeb40604dfd6e8102bb93d87f4c490169094b36546bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T01:04:33.099820Z","signature_b64":"K+sqDGr+zHS+vhsD4IB7cswlg+4NNt/uBs2XFxNYzzfdXh64NO5gs33AAmKoDZQ38rV/nhA1zIngjRMugDvCAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01a408550f90c48715e9aeb40604dfd6e8102bb93d87f4c490169094b36546bc","last_reissued_at":"2026-05-28T01:04:33.099307Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T01:04:33.099307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2511.16645","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-28T01:04:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4779R94JYftrFGsQFOAWB4lwjk3Bk5eADCJwZLM7pV+GR1u94fHE7UpikUyZhxlQIfeBjrUHDbuRhhgXPElwBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:33:39.901165Z"},"content_sha256":"f2a0e8dd8f86eef1378f7a49e58fc2e090590aa58d15e3916bcc48f421421839","schema_version":"1.0","event_id":"sha256:f2a0e8dd8f86eef1378f7a49e58fc2e090590aa58d15e3916bcc48f421421839"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:AGSAQVIPSDCIOFPJV22AMBG723","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement incompatibility in Bayesian multiparameter quantum estimation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Dominic Branford, Francesco Albarelli, Jes\\'us Rubio","submitted_at":"2025-11-20T18:51:18Z","abstract_excerpt":"We present a comprehensive and pedagogical formulation of Bayesian multiparameter quantum estimation. Within this framework, we analyse the role of measurement incompatibility and establish its quantitative effect on attainable precision. We achieve this by deriving upper bounds based on the pretty good measurement -- a notion from hypothesis testing -- combined with the evaluation of the Nagaoka--Hayashi lower bound. In general, we prove that, as in the many-copy regime of local estimation theory, incompatibility can at most double the minimum loss relative to the idealised scenario in which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.16645","kind":"arxiv","version":3},"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/2511.16645/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":"2026-05-28T01:04:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dCbdNnXwdbmH60QZiQ4GGoXiAItI5V71MouaCLg/4WlYQ4UDxR7/7qw8/BuNtSGHBNnCwFrNVkZClp/DBcG7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T02:33:39.901860Z"},"content_sha256":"6eda9413eb9b150d26d6d85a140385a5f577b64c3a74c01de586c4377b51ad47","schema_version":"1.0","event_id":"sha256:6eda9413eb9b150d26d6d85a140385a5f577b64c3a74c01de586c4377b51ad47"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AGSAQVIPSDCIOFPJV22AMBG723/bundle.json","state_url":"https://pith.science/pith/AGSAQVIPSDCIOFPJV22AMBG723/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AGSAQVIPSDCIOFPJV22AMBG723/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":"2026-06-01T02:33:39Z","links":{"resolver":"https://pith.science/pith/AGSAQVIPSDCIOFPJV22AMBG723","bundle":"https://pith.science/pith/AGSAQVIPSDCIOFPJV22AMBG723/bundle.json","state":"https://pith.science/pith/AGSAQVIPSDCIOFPJV22AMBG723/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AGSAQVIPSDCIOFPJV22AMBG723/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:AGSAQVIPSDCIOFPJV22AMBG723","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":"cd43c497eada368f2cf9eb51b061bdec4fa35c6620fad52a56f0805cf6c5cb97","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-11-20T18:51:18Z","title_canon_sha256":"52a6e6dfa99bc2e7445b5f4138992cdf7b8f662aa914f3b28ef96f40c4fc2e6a"},"schema_version":"1.0","source":{"id":"2511.16645","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.16645","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"arxiv_version","alias_value":"2511.16645v3","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.16645","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"pith_short_12","alias_value":"AGSAQVIPSDCI","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"pith_short_16","alias_value":"AGSAQVIPSDCIOFPJ","created_at":"2026-05-28T01:04:33Z"},{"alias_kind":"pith_short_8","alias_value":"AGSAQVIP","created_at":"2026-05-28T01:04:33Z"}],"graph_snapshots":[{"event_id":"sha256:6eda9413eb9b150d26d6d85a140385a5f577b64c3a74c01de586c4377b51ad47","target":"graph","created_at":"2026-05-28T01:04:33Z","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/2511.16645/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a comprehensive and pedagogical formulation of Bayesian multiparameter quantum estimation. Within this framework, we analyse the role of measurement incompatibility and establish its quantitative effect on attainable precision. We achieve this by deriving upper bounds based on the pretty good measurement -- a notion from hypothesis testing -- combined with the evaluation of the Nagaoka--Hayashi lower bound. In general, we prove that, as in the many-copy regime of local estimation theory, incompatibility can at most double the minimum loss relative to the idealised scenario in which ","authors_text":"Dominic Branford, Francesco Albarelli, Jes\\'us Rubio","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-11-20T18:51:18Z","title":"Measurement incompatibility in Bayesian multiparameter quantum estimation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.16645","kind":"arxiv","version":3},"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:f2a0e8dd8f86eef1378f7a49e58fc2e090590aa58d15e3916bcc48f421421839","target":"record","created_at":"2026-05-28T01:04:33Z","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":"cd43c497eada368f2cf9eb51b061bdec4fa35c6620fad52a56f0805cf6c5cb97","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2025-11-20T18:51:18Z","title_canon_sha256":"52a6e6dfa99bc2e7445b5f4138992cdf7b8f662aa914f3b28ef96f40c4fc2e6a"},"schema_version":"1.0","source":{"id":"2511.16645","kind":"arxiv","version":3}},"canonical_sha256":"01a408550f90c48715e9aeb40604dfd6e8102bb93d87f4c490169094b36546bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01a408550f90c48715e9aeb40604dfd6e8102bb93d87f4c490169094b36546bc","first_computed_at":"2026-05-28T01:04:33.099307Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T01:04:33.099307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K+sqDGr+zHS+vhsD4IB7cswlg+4NNt/uBs2XFxNYzzfdXh64NO5gs33AAmKoDZQ38rV/nhA1zIngjRMugDvCAQ==","signature_status":"signed_v1","signed_at":"2026-05-28T01:04:33.099820Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.16645","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f2a0e8dd8f86eef1378f7a49e58fc2e090590aa58d15e3916bcc48f421421839","sha256:6eda9413eb9b150d26d6d85a140385a5f577b64c3a74c01de586c4377b51ad47"],"state_sha256":"d9ac46547cf6a3862dd6b2b80182b2bff6f50476ed9380854711f213d3c8702d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qNdWNKYoqzBlWC3yXY9GHTitFmuJLPdbpuv5fXKKLeMrfYQ00VEu+hbyx9bC36HDk4ZvUyoogPaeZe4sQ/2yBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T02:33:39.906028Z","bundle_sha256":"fb63cee9bb02ec7b306542436f226cafb7b77f7b174199adc8b804901ba40d59"}}