{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ZCWZFMPY6KNQ37Q2HJCVSV2JKG","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":"19fa9b3f99c3d45f612fe8513ba3b7b0df28d3aadaa5c4abc7843dba85ddb9bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-03T11:09:11Z","title_canon_sha256":"0ca91890e4f167c33dbfdd8a02c7062dc224af218cd892c78b53b7b11a4b7e03"},"schema_version":"1.0","source":{"id":"1711.01105","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.01105","created_at":"2026-05-18T00:25:51Z"},{"alias_kind":"arxiv_version","alias_value":"1711.01105v2","created_at":"2026-05-18T00:25:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.01105","created_at":"2026-05-18T00:25:51Z"},{"alias_kind":"pith_short_12","alias_value":"ZCWZFMPY6KNQ","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZCWZFMPY6KNQ37Q2","created_at":"2026-05-18T12:31:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZCWZFMPY","created_at":"2026-05-18T12:31:59Z"}],"graph_snapshots":[{"event_id":"sha256:86072ebe98b031683062100de8206677ef8d3d2aef2e32b186c825666e554f8e","target":"graph","created_at":"2026-05-18T00:25:51Z","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":"Quantum measurements have intrinsic properties which seem incompatible with our everyday-life macroscopic measurements. Macroscopic Quantum Measurement (MQM) is a concept that aims at bridging the gap between well understood microscopic quantum measurements and macroscopic classical measurements. In this paper, we focus on the task of the polarization direction estimation of a system of $N$ spins $1/2$ particles and investigate the model some of us proposed in Barnea et al., 2017. This model is based on a von Neumann pointer measurement, where each spin component of the system is coupled to on","authors_text":"Florian Fr\\\"owis, Marc-Olivier Renou, Nicolas Gisin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-03T11:09:11Z","title":"Robust Macroscopic Quantum Measurements in the presence of limited control and knowledge"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.01105","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":"sha256:77aaa9cba845a19ff35e27cf0eed47c5e435723336bdce507982446742f786fe","target":"record","created_at":"2026-05-18T00:25:51Z","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":"19fa9b3f99c3d45f612fe8513ba3b7b0df28d3aadaa5c4abc7843dba85ddb9bc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-03T11:09:11Z","title_canon_sha256":"0ca91890e4f167c33dbfdd8a02c7062dc224af218cd892c78b53b7b11a4b7e03"},"schema_version":"1.0","source":{"id":"1711.01105","kind":"arxiv","version":2}},"canonical_sha256":"c8ad92b1f8f29b0dfe1a3a455957495188e3bde2c5bf4824dea1c72dafc870e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c8ad92b1f8f29b0dfe1a3a455957495188e3bde2c5bf4824dea1c72dafc870e0","first_computed_at":"2026-05-18T00:25:51.955683Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:25:51.955683Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nfBCgivIu/wKSMM4I4Grc23JE/s5XuzYJ/gBgt5XIbtxxSuuJatJL8d5eMCjft6YqG8kzo9R7NgwZmDQyIsiDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:25:51.956350Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.01105","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:77aaa9cba845a19ff35e27cf0eed47c5e435723336bdce507982446742f786fe","sha256:86072ebe98b031683062100de8206677ef8d3d2aef2e32b186c825666e554f8e"],"state_sha256":"a2d29c21974ed4c7098a93c60aced9874ffcd7820f37fddf103799c14c5455a1"}