{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:6I27P6QOLJDXORMIGFB2VXLV4T","short_pith_number":"pith:6I27P6QO","schema_version":"1.0","canonical_sha256":"f235f7fa0e5a477745883143aadd75e4e2e03607bff877845f6a5a8ecbbf0f20","source":{"kind":"arxiv","id":"1203.2251","version":2},"attestation_state":"computed","paper":{"title":"Information gain versus coupling strength in quantum measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Quanhui Liu, Shengjun Wu, Xuanmin Zhu, Yuxiang Zhang","submitted_at":"2012-03-10T14:06:00Z","abstract_excerpt":"We investigate the relationship between the information gain and the interaction strength between the quantum system and the measuring device. A strategy is proposed to calculate the information gain of the measuring device as the coupling strength is a variable. For qubit systems, we prove that the information gain increases monotonically with the coupling strength. It is obtained that the information gain of the projective measurement along the x-direction reduces with the increasing of the measurement strength along the z-direction, and a complementarity of information gain in the measureme"},"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":"1203.2251","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-10T14:06:00Z","cross_cats_sorted":[],"title_canon_sha256":"287073e53d2b6494d245acd7f3b5211db2d49f44392f9814994e2a4784e88096","abstract_canon_sha256":"8f1907c5ae577d8e8ed53f11fb43e24ae906145096016adbe28dd9a31d7e8509"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:56:21.905770Z","signature_b64":"EN2eVzMao57K778IHFGNNltgt4E4LqaXMIvDNR9dngv/iBprfRB9cYN0WfLU2nBgY6uBb3R89iFoTthXtlZRAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f235f7fa0e5a477745883143aadd75e4e2e03607bff877845f6a5a8ecbbf0f20","last_reissued_at":"2026-05-18T03:56:21.905034Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:56:21.905034Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Information gain versus coupling strength in quantum measurements","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Quanhui Liu, Shengjun Wu, Xuanmin Zhu, Yuxiang Zhang","submitted_at":"2012-03-10T14:06:00Z","abstract_excerpt":"We investigate the relationship between the information gain and the interaction strength between the quantum system and the measuring device. A strategy is proposed to calculate the information gain of the measuring device as the coupling strength is a variable. For qubit systems, we prove that the information gain increases monotonically with the coupling strength. It is obtained that the information gain of the projective measurement along the x-direction reduces with the increasing of the measurement strength along the z-direction, and a complementarity of information gain in the measureme"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.2251","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":""},"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":"1203.2251","created_at":"2026-05-18T03:56:21.905149+00:00"},{"alias_kind":"arxiv_version","alias_value":"1203.2251v2","created_at":"2026-05-18T03:56:21.905149+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.2251","created_at":"2026-05-18T03:56:21.905149+00:00"},{"alias_kind":"pith_short_12","alias_value":"6I27P6QOLJDX","created_at":"2026-05-18T12:26:56.085431+00:00"},{"alias_kind":"pith_short_16","alias_value":"6I27P6QOLJDXORMI","created_at":"2026-05-18T12:26:56.085431+00:00"},{"alias_kind":"pith_short_8","alias_value":"6I27P6QO","created_at":"2026-05-18T12:26:56.085431+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/6I27P6QOLJDXORMIGFB2VXLV4T","json":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T.json","graph_json":"https://pith.science/api/pith-number/6I27P6QOLJDXORMIGFB2VXLV4T/graph.json","events_json":"https://pith.science/api/pith-number/6I27P6QOLJDXORMIGFB2VXLV4T/events.json","paper":"https://pith.science/paper/6I27P6QO"},"agent_actions":{"view_html":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T","download_json":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T.json","view_paper":"https://pith.science/paper/6I27P6QO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1203.2251&json=true","fetch_graph":"https://pith.science/api/pith-number/6I27P6QOLJDXORMIGFB2VXLV4T/graph.json","fetch_events":"https://pith.science/api/pith-number/6I27P6QOLJDXORMIGFB2VXLV4T/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T/action/timestamp_anchor","attest_storage":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T/action/storage_attestation","attest_author":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T/action/author_attestation","sign_citation":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T/action/citation_signature","submit_replication":"https://pith.science/pith/6I27P6QOLJDXORMIGFB2VXLV4T/action/replication_record"}},"created_at":"2026-05-18T03:56:21.905149+00:00","updated_at":"2026-05-18T03:56:21.905149+00:00"}