{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:RMCKWLDTVN4MJJX7SRVINNU746","short_pith_number":"pith:RMCKWLDT","canonical_record":{"source":{"id":"0906.0860","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-04T09:50:12Z","cross_cats_sorted":[],"title_canon_sha256":"a0f02a22a296c2ff42f8e4188899efa74cdc9e82c35f721ea0caf4ccf68880d6","abstract_canon_sha256":"172134d6ab9daabe86176efc9bb7d710e01cf7ba8b229caf363fe936335a71a7"},"schema_version":"1.0"},"canonical_sha256":"8b04ab2c73ab78c4a6ff946a86b69fe7b51b21a684420f91d4f833ec54b5e117","source":{"kind":"arxiv","id":"0906.0860","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0860","created_at":"2026-05-18T02:13:29Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0860v2","created_at":"2026-05-18T02:13:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0860","created_at":"2026-05-18T02:13:29Z"},{"alias_kind":"pith_short_12","alias_value":"RMCKWLDTVN4M","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"RMCKWLDTVN4MJJX7","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"RMCKWLDT","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:RMCKWLDTVN4MJJX7SRVINNU746","target":"record","payload":{"canonical_record":{"source":{"id":"0906.0860","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-04T09:50:12Z","cross_cats_sorted":[],"title_canon_sha256":"a0f02a22a296c2ff42f8e4188899efa74cdc9e82c35f721ea0caf4ccf68880d6","abstract_canon_sha256":"172134d6ab9daabe86176efc9bb7d710e01cf7ba8b229caf363fe936335a71a7"},"schema_version":"1.0"},"canonical_sha256":"8b04ab2c73ab78c4a6ff946a86b69fe7b51b21a684420f91d4f833ec54b5e117","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:29.116805Z","signature_b64":"OXnmPLg4E4T9POdH1P+Dz2LZ0R8jhUQTqjPv3kR6RFv0BZEvY8jwbWoqTGzvUyJfp/zdL+D0nKNkUS1+kyGJAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b04ab2c73ab78c4a6ff946a86b69fe7b51b21a684420f91d4f833ec54b5e117","last_reissued_at":"2026-05-18T02:13:29.116190Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:29.116190Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.0860","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":"2026-05-18T02:13:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TSskk6CjFgjjm9fmxNiA4MirU6d4mLrtyXb6XPfgnX9D2oLmzZZy8v2WBPEXTachHKg5y+BFUmh0eeGder8zAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:19:26.820506Z"},"content_sha256":"52f7dcb8ed2be1f3440f888cc7fed60954d707852895cbea88441ff736cd37da","schema_version":"1.0","event_id":"sha256:52f7dcb8ed2be1f3440f888cc7fed60954d707852895cbea88441ff736cd37da"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:RMCKWLDTVN4MJJX7SRVINNU746","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement and communication-reducing properties of noisy N-qubit states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Caslav Brukner, Marek Zukowski, Tomasz Paterek, Wieslaw Laskowski","submitted_at":"2009-06-04T09:50:12Z","abstract_excerpt":"We consider properties of states of many qubits, which arise after sending certain entangled states via various noisy channels (white noise, coloured noise, local depolarization, dephasing and amplitude damping). Entanglement of these states is studied and their ability to violate certain classes of Bell inequalities. States which violate them allow for higher than classical efficiency of solving related distributed computational tasks with constrained communication. This is a direct property of such states -- not requiring their further modification via stochastic local operations and classic"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0860","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:13:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wLSCBGqBr/3PeEfJqa20z/uRiVOVsquKitJG4onm29w8BJeBRXraKvn4sV7WG0WUUdIHMSwHeWJu4eCDNJNcCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T16:19:26.821286Z"},"content_sha256":"711084f74381d4e7992df6966effd29cd0807dbe79374dc516542be810bb901b","schema_version":"1.0","event_id":"sha256:711084f74381d4e7992df6966effd29cd0807dbe79374dc516542be810bb901b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RMCKWLDTVN4MJJX7SRVINNU746/bundle.json","state_url":"https://pith.science/pith/RMCKWLDTVN4MJJX7SRVINNU746/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RMCKWLDTVN4MJJX7SRVINNU746/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":"2026-05-30T16:19:26Z","links":{"resolver":"https://pith.science/pith/RMCKWLDTVN4MJJX7SRVINNU746","bundle":"https://pith.science/pith/RMCKWLDTVN4MJJX7SRVINNU746/bundle.json","state":"https://pith.science/pith/RMCKWLDTVN4MJJX7SRVINNU746/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RMCKWLDTVN4MJJX7SRVINNU746/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:RMCKWLDTVN4MJJX7SRVINNU746","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":"172134d6ab9daabe86176efc9bb7d710e01cf7ba8b229caf363fe936335a71a7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-04T09:50:12Z","title_canon_sha256":"a0f02a22a296c2ff42f8e4188899efa74cdc9e82c35f721ea0caf4ccf68880d6"},"schema_version":"1.0","source":{"id":"0906.0860","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0860","created_at":"2026-05-18T02:13:29Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0860v2","created_at":"2026-05-18T02:13:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0860","created_at":"2026-05-18T02:13:29Z"},{"alias_kind":"pith_short_12","alias_value":"RMCKWLDTVN4M","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"RMCKWLDTVN4MJJX7","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"RMCKWLDT","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:711084f74381d4e7992df6966effd29cd0807dbe79374dc516542be810bb901b","target":"graph","created_at":"2026-05-18T02:13:29Z","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":"We consider properties of states of many qubits, which arise after sending certain entangled states via various noisy channels (white noise, coloured noise, local depolarization, dephasing and amplitude damping). Entanglement of these states is studied and their ability to violate certain classes of Bell inequalities. States which violate them allow for higher than classical efficiency of solving related distributed computational tasks with constrained communication. This is a direct property of such states -- not requiring their further modification via stochastic local operations and classic","authors_text":"Caslav Brukner, Marek Zukowski, Tomasz Paterek, Wieslaw Laskowski","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-04T09:50:12Z","title":"Entanglement and communication-reducing properties of noisy N-qubit states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0860","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":"sha256:52f7dcb8ed2be1f3440f888cc7fed60954d707852895cbea88441ff736cd37da","target":"record","created_at":"2026-05-18T02:13:29Z","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":"172134d6ab9daabe86176efc9bb7d710e01cf7ba8b229caf363fe936335a71a7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-06-04T09:50:12Z","title_canon_sha256":"a0f02a22a296c2ff42f8e4188899efa74cdc9e82c35f721ea0caf4ccf68880d6"},"schema_version":"1.0","source":{"id":"0906.0860","kind":"arxiv","version":2}},"canonical_sha256":"8b04ab2c73ab78c4a6ff946a86b69fe7b51b21a684420f91d4f833ec54b5e117","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b04ab2c73ab78c4a6ff946a86b69fe7b51b21a684420f91d4f833ec54b5e117","first_computed_at":"2026-05-18T02:13:29.116190Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:13:29.116190Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OXnmPLg4E4T9POdH1P+Dz2LZ0R8jhUQTqjPv3kR6RFv0BZEvY8jwbWoqTGzvUyJfp/zdL+D0nKNkUS1+kyGJAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:13:29.116805Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.0860","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52f7dcb8ed2be1f3440f888cc7fed60954d707852895cbea88441ff736cd37da","sha256:711084f74381d4e7992df6966effd29cd0807dbe79374dc516542be810bb901b"],"state_sha256":"181daa2a8336c81ed6077449f4ef2c76409d6dc23100f536ebb0a548cd635355"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ntzq87m6URtugX9qVSIDxIBO0lq904J4tDn8zvOolt6xruCmaTLV8rUA4KYT8QlrUrs0i9odIPkOZPpAFU+7Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T16:19:26.825456Z","bundle_sha256":"0210072f1443bb864366092392528482cb92fc2b2f1a325c0a1ea3594f891b8b"}}