{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:IX4RKESMX3YWX2AAHASZQY6UUC","short_pith_number":"pith:IX4RKESM","schema_version":"1.0","canonical_sha256":"45f915124cbef16be80038259863d4a0a2bceaf9205eb99a55492853ecbbdb05","source":{"kind":"arxiv","id":"2311.17845","version":2},"attestation_state":"computed","paper":{"title":"Error estimation of different schemes to measure spin-squeezing inequalities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jan Lennart B\\\"onsel, Otfried G\\\"uhne, Satoya Imai, Ye-Chao Liu","submitted_at":"2023-11-29T17:49:10Z","abstract_excerpt":"How can we analyze quantum correlations in large and noisy systems without quantum state tomography? An established method is to measure total angular momenta and employ the so-called spin-squeezing inequalities based on their expectations and variances. This allows detection of metrologically useful entanglement, but efficient strategies for estimating such nonlinear quantities have yet to be determined. In this paper we show that spin-squeezing inequalities can not only be evaluated by measurements of the total angular momentum but also by two-qubit correlations, either involving all pair co"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2311.17845","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2023-11-29T17:49:10Z","cross_cats_sorted":[],"title_canon_sha256":"5a69223e89e58f2c9f36a2a745e75d4fa56b828a0ec7747cc2b4a07757292edd","abstract_canon_sha256":"197b786be9033f65f1a64fd8e3e4de0242fe3334faa7dca5083a7e5072aa02fe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:57:53.412380Z","signature_b64":"Hsh/H+k+y+KIRCZ+tOMG5NwU/ETc6KiJc0zYlxNK7sAs0vyP7FDIiYel8tRhO+DbCYVWznXzcDpCVg/xGFp1CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"45f915124cbef16be80038259863d4a0a2bceaf9205eb99a55492853ecbbdb05","last_reissued_at":"2026-07-05T08:57:53.411897Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:57:53.411897Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Error estimation of different schemes to measure spin-squeezing inequalities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jan Lennart B\\\"onsel, Otfried G\\\"uhne, Satoya Imai, Ye-Chao Liu","submitted_at":"2023-11-29T17:49:10Z","abstract_excerpt":"How can we analyze quantum correlations in large and noisy systems without quantum state tomography? An established method is to measure total angular momenta and employ the so-called spin-squeezing inequalities based on their expectations and variances. This allows detection of metrologically useful entanglement, but efficient strategies for estimating such nonlinear quantities have yet to be determined. In this paper we show that spin-squeezing inequalities can not only be evaluated by measurements of the total angular momentum but also by two-qubit correlations, either involving all pair co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2311.17845","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2311.17845/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2311.17845","created_at":"2026-07-05T08:57:53.411953+00:00"},{"alias_kind":"arxiv_version","alias_value":"2311.17845v2","created_at":"2026-07-05T08:57:53.411953+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2311.17845","created_at":"2026-07-05T08:57:53.411953+00:00"},{"alias_kind":"pith_short_12","alias_value":"IX4RKESMX3YW","created_at":"2026-07-05T08:57:53.411953+00:00"},{"alias_kind":"pith_short_16","alias_value":"IX4RKESMX3YWX2AA","created_at":"2026-07-05T08:57:53.411953+00:00"},{"alias_kind":"pith_short_8","alias_value":"IX4RKESM","created_at":"2026-07-05T08:57:53.411953+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC","json":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC.json","graph_json":"https://pith.science/api/pith-number/IX4RKESMX3YWX2AAHASZQY6UUC/graph.json","events_json":"https://pith.science/api/pith-number/IX4RKESMX3YWX2AAHASZQY6UUC/events.json","paper":"https://pith.science/paper/IX4RKESM"},"agent_actions":{"view_html":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC","download_json":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC.json","view_paper":"https://pith.science/paper/IX4RKESM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2311.17845&json=true","fetch_graph":"https://pith.science/api/pith-number/IX4RKESMX3YWX2AAHASZQY6UUC/graph.json","fetch_events":"https://pith.science/api/pith-number/IX4RKESMX3YWX2AAHASZQY6UUC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC/action/storage_attestation","attest_author":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC/action/author_attestation","sign_citation":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC/action/citation_signature","submit_replication":"https://pith.science/pith/IX4RKESMX3YWX2AAHASZQY6UUC/action/replication_record"}},"created_at":"2026-07-05T08:57:53.411953+00:00","updated_at":"2026-07-05T08:57:53.411953+00:00"}