{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:4A3CKHKUS5URVZFAGVDNYRSLJW","short_pith_number":"pith:4A3CKHKU","canonical_record":{"source":{"id":"cond-mat/0607645","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2006-07-25T15:38:49Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"0c8947315657dd91d7c20c5a646f303c3131d7061ab435f3020cf527640db53d","abstract_canon_sha256":"217daf7537960dc03ec875098f220b3e6925b22098249d8d2d00316d7afddceb"},"schema_version":"1.0"},"canonical_sha256":"e036251d5497691ae4a03546dc464b4db317f0f6b6d68d054bbf60484a920fd6","source":{"kind":"arxiv","id":"cond-mat/0607645","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0607645","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0607645v2","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0607645","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"pith_short_12","alias_value":"4A3CKHKUS5UR","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"pith_short_16","alias_value":"4A3CKHKUS5URVZFA","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"pith_short_8","alias_value":"4A3CKHKU","created_at":"2026-07-04T15:01:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:4A3CKHKUS5URVZFAGVDNYRSLJW","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0607645","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2006-07-25T15:38:49Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"0c8947315657dd91d7c20c5a646f303c3131d7061ab435f3020cf527640db53d","abstract_canon_sha256":"217daf7537960dc03ec875098f220b3e6925b22098249d8d2d00316d7afddceb"},"schema_version":"1.0"},"canonical_sha256":"e036251d5497691ae4a03546dc464b4db317f0f6b6d68d054bbf60484a920fd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:01:17.586521Z","signature_b64":"koLiGcjsL1YNCPVYenR3DLWTSNmiar4pHSBZ6ipjXjrYO8fUJhhJ59ZadyhCZNl8vaxHuUtFhHGuC8Qma7hBDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e036251d5497691ae4a03546dc464b4db317f0f6b6d68d054bbf60484a920fd6","last_reissued_at":"2026-07-04T15:01:17.586116Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:01:17.586116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0607645","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:01:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PNEpfyL85417G9ROsUOiovZhHWGjPJMb9AiAYEfK/nubtVJf94faUMDAou/SlnfGvA1pD6rWomqgzXW1lIbgBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:37:15.173272Z"},"content_sha256":"a0239fc860e0bca75bf260292c9d18c95436f00d475f641728006bc2110f89b7","schema_version":"1.0","event_id":"sha256:a0239fc860e0bca75bf260292c9d18c95436f00d475f641728006bc2110f89b7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:4A3CKHKUS5URVZFAGVDNYRSLJW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement detection for electrons via witness operators","license":"","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Fabio Taddei, Lara Faoro","submitted_at":"2006-07-25T15:38:49Z","abstract_excerpt":"We discuss an implementation of the entanglement witness, a method to detect entanglement with few local measurements, in systems where entangled electrons are generated both in the spin and orbital degrees of freedom.\n  We address the efficiency of this method in various setups, including two different particle-hole entanglement structures, and we demonstrate that it can also be used to infer information on the possible dephasing afflicting the devices."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0607645","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/cond-mat/0607645/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":"2026-07-04T15:01:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XLlB3PQVvvnSKU5IyXk382Ma6Gc3FGoiEisdS3KU26f1eSK1prWTa8cxVhPvR1pc5f0BLDf/6ZL3KGNgLiC4Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:37:15.173642Z"},"content_sha256":"2965b7e206e7921c7b27a2ac65b20bae8b188949903e0316ebc59edc36544cbd","schema_version":"1.0","event_id":"sha256:2965b7e206e7921c7b27a2ac65b20bae8b188949903e0316ebc59edc36544cbd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4A3CKHKUS5URVZFAGVDNYRSLJW/bundle.json","state_url":"https://pith.science/pith/4A3CKHKUS5URVZFAGVDNYRSLJW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4A3CKHKUS5URVZFAGVDNYRSLJW/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":"2026-08-20T08:37:15Z","links":{"resolver":"https://pith.science/pith/4A3CKHKUS5URVZFAGVDNYRSLJW","bundle":"https://pith.science/pith/4A3CKHKUS5URVZFAGVDNYRSLJW/bundle.json","state":"https://pith.science/pith/4A3CKHKUS5URVZFAGVDNYRSLJW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4A3CKHKUS5URVZFAGVDNYRSLJW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:4A3CKHKUS5URVZFAGVDNYRSLJW","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":"217daf7537960dc03ec875098f220b3e6925b22098249d8d2d00316d7afddceb","cross_cats_sorted":["quant-ph"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2006-07-25T15:38:49Z","title_canon_sha256":"0c8947315657dd91d7c20c5a646f303c3131d7061ab435f3020cf527640db53d"},"schema_version":"1.0","source":{"id":"cond-mat/0607645","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0607645","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0607645v2","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0607645","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"pith_short_12","alias_value":"4A3CKHKUS5UR","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"pith_short_16","alias_value":"4A3CKHKUS5URVZFA","created_at":"2026-07-04T15:01:17Z"},{"alias_kind":"pith_short_8","alias_value":"4A3CKHKU","created_at":"2026-07-04T15:01:17Z"}],"graph_snapshots":[{"event_id":"sha256:2965b7e206e7921c7b27a2ac65b20bae8b188949903e0316ebc59edc36544cbd","target":"graph","created_at":"2026-07-04T15:01:17Z","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/cond-mat/0607645/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss an implementation of the entanglement witness, a method to detect entanglement with few local measurements, in systems where entangled electrons are generated both in the spin and orbital degrees of freedom.\n  We address the efficiency of this method in various setups, including two different particle-hole entanglement structures, and we demonstrate that it can also be used to infer information on the possible dephasing afflicting the devices.","authors_text":"Fabio Taddei, Lara Faoro","cross_cats":["quant-ph"],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2006-07-25T15:38:49Z","title":"Entanglement detection for electrons via witness operators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0607645","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:a0239fc860e0bca75bf260292c9d18c95436f00d475f641728006bc2110f89b7","target":"record","created_at":"2026-07-04T15:01:17Z","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":"217daf7537960dc03ec875098f220b3e6925b22098249d8d2d00316d7afddceb","cross_cats_sorted":["quant-ph"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2006-07-25T15:38:49Z","title_canon_sha256":"0c8947315657dd91d7c20c5a646f303c3131d7061ab435f3020cf527640db53d"},"schema_version":"1.0","source":{"id":"cond-mat/0607645","kind":"arxiv","version":2}},"canonical_sha256":"e036251d5497691ae4a03546dc464b4db317f0f6b6d68d054bbf60484a920fd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e036251d5497691ae4a03546dc464b4db317f0f6b6d68d054bbf60484a920fd6","first_computed_at":"2026-07-04T15:01:17.586116Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:01:17.586116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"koLiGcjsL1YNCPVYenR3DLWTSNmiar4pHSBZ6ipjXjrYO8fUJhhJ59ZadyhCZNl8vaxHuUtFhHGuC8Qma7hBDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:01:17.586521Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0607645","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a0239fc860e0bca75bf260292c9d18c95436f00d475f641728006bc2110f89b7","sha256:2965b7e206e7921c7b27a2ac65b20bae8b188949903e0316ebc59edc36544cbd"],"state_sha256":"d995a37c732b4fa103f3348da73da2837b495ae4edb1dc65520a11c10736f7df"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lPRKCVGMxpMkt0mOrMHHFEc7Uve7xRpNyM7WO+nOc8g+up3Szl+Lx2V8nFFJAbaSFGCfbGqJkNg+t1ityIxVCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T08:37:15.175974Z","bundle_sha256":"bad3928798ecc851ced9ecf9cbc8d8b0fd265daf96dcc692bdf554e61214f9c1"}}