{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:NSDRZC4NRY4K3ST3WV3V5E3VQ5","short_pith_number":"pith:NSDRZC4N","canonical_record":{"source":{"id":"cond-mat/0703075","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-03-02T19:37:35Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"1333d22a974d468dad2e39cfa827ebb0ab0ee7231e39d01e8b5d6bfd318c8ab8","abstract_canon_sha256":"69f27f2703d5bd999a4f0793c08f2f47c5d0c6a71b8022c032429442fc6b9edb"},"schema_version":"1.0"},"canonical_sha256":"6c871c8b8d8e38adca7bb5775e9375877ce2c93e32a80bd7ef5adfe006205c0e","source":{"kind":"arxiv","id":"cond-mat/0703075","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0703075","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0703075v3","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0703075","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"pith_short_12","alias_value":"NSDRZC4NRY4K","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"pith_short_16","alias_value":"NSDRZC4NRY4K3ST3","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"pith_short_8","alias_value":"NSDRZC4N","created_at":"2026-07-04T15:03:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:NSDRZC4NRY4K3ST3WV3V5E3VQ5","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0703075","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-03-02T19:37:35Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"1333d22a974d468dad2e39cfa827ebb0ab0ee7231e39d01e8b5d6bfd318c8ab8","abstract_canon_sha256":"69f27f2703d5bd999a4f0793c08f2f47c5d0c6a71b8022c032429442fc6b9edb"},"schema_version":"1.0"},"canonical_sha256":"6c871c8b8d8e38adca7bb5775e9375877ce2c93e32a80bd7ef5adfe006205c0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:03:08.988839Z","signature_b64":"inxgzBVXizkNW3P++HnX849v4DfFPFhnLXE34YtT9MU4kPNJ8BIyDZkhM5m3u/OjlyQzgrfBmfTICqcpeNI5CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c871c8b8d8e38adca7bb5775e9375877ce2c93e32a80bd7ef5adfe006205c0e","last_reissued_at":"2026-07-04T15:03:08.988427Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:03:08.988427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0703075","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:03:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XU6cIlR430RkjTBnG1aaVsHarxbTuizmlxicfaDfHJAZGAmq6Fa2/yI5jI+iUFekMWF102Qv98XZBHHKp15DCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:04:43.957978Z"},"content_sha256":"e62dc763caea7c4955e0b5d049a2898b4ae6e852f9e15690981591ae10883933","schema_version":"1.0","event_id":"sha256:e62dc763caea7c4955e0b5d049a2898b4ae6e852f9e15690981591ae10883933"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:NSDRZC4NRY4K3ST3WV3V5E3VQ5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Incomplete pure dephasing of N-qubit entangled W states","license":"","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Martijn Wubs, Peter Hanggi, Roland Doll, Sigmund Kohler","submitted_at":"2007-03-02T19:37:35Z","abstract_excerpt":"We consider qubits in a linear arrangement coupled to a bosonic field which acts as a quantum heat bath and causes decoherence. By taking the spatial separation of the qubits explicitly into account, the reduced qubit dynamics acquires an additional non-Markovian element. We investigate the time evolution of an entangled many-qubit W state, which for vanishing qubit separation remains robust under pure dephasing. For finite separation, by contrast, the dynamics is no longer decoherence-free. On the other hand, spatial noise correlations may prevent a complete dephasing. While a standard Bloch-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0703075","kind":"arxiv","version":3},"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/0703075/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":"2026-07-04T15:03:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UQI7Qe5ANKyEapLn1Cr1VQjlirzWEAy7UhWJsaUROF/I9MT3NF+h6nkVbrsJ/6tTLpUvqoPJwAs1v81PUD88AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:04:43.958461Z"},"content_sha256":"7552b5a19ba08a790c8ece0a62854e09ff220883deca234b20bf2c2303f68df7","schema_version":"1.0","event_id":"sha256:7552b5a19ba08a790c8ece0a62854e09ff220883deca234b20bf2c2303f68df7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5/bundle.json","state_url":"https://pith.science/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5/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":"2026-08-04T08:04:43Z","links":{"resolver":"https://pith.science/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5","bundle":"https://pith.science/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5/bundle.json","state":"https://pith.science/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NSDRZC4NRY4K3ST3WV3V5E3VQ5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:NSDRZC4NRY4K3ST3WV3V5E3VQ5","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":"69f27f2703d5bd999a4f0793c08f2f47c5d0c6a71b8022c032429442fc6b9edb","cross_cats_sorted":["quant-ph"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-03-02T19:37:35Z","title_canon_sha256":"1333d22a974d468dad2e39cfa827ebb0ab0ee7231e39d01e8b5d6bfd318c8ab8"},"schema_version":"1.0","source":{"id":"cond-mat/0703075","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0703075","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0703075v3","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0703075","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"pith_short_12","alias_value":"NSDRZC4NRY4K","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"pith_short_16","alias_value":"NSDRZC4NRY4K3ST3","created_at":"2026-07-04T15:03:08Z"},{"alias_kind":"pith_short_8","alias_value":"NSDRZC4N","created_at":"2026-07-04T15:03:08Z"}],"graph_snapshots":[{"event_id":"sha256:7552b5a19ba08a790c8ece0a62854e09ff220883deca234b20bf2c2303f68df7","target":"graph","created_at":"2026-07-04T15:03:08Z","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/0703075/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider qubits in a linear arrangement coupled to a bosonic field which acts as a quantum heat bath and causes decoherence. By taking the spatial separation of the qubits explicitly into account, the reduced qubit dynamics acquires an additional non-Markovian element. We investigate the time evolution of an entangled many-qubit W state, which for vanishing qubit separation remains robust under pure dephasing. For finite separation, by contrast, the dynamics is no longer decoherence-free. On the other hand, spatial noise correlations may prevent a complete dephasing. While a standard Bloch-","authors_text":"Martijn Wubs, Peter Hanggi, Roland Doll, Sigmund Kohler","cross_cats":["quant-ph"],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-03-02T19:37:35Z","title":"Incomplete pure dephasing of N-qubit entangled W states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0703075","kind":"arxiv","version":3},"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:e62dc763caea7c4955e0b5d049a2898b4ae6e852f9e15690981591ae10883933","target":"record","created_at":"2026-07-04T15:03:08Z","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":"69f27f2703d5bd999a4f0793c08f2f47c5d0c6a71b8022c032429442fc6b9edb","cross_cats_sorted":["quant-ph"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2007-03-02T19:37:35Z","title_canon_sha256":"1333d22a974d468dad2e39cfa827ebb0ab0ee7231e39d01e8b5d6bfd318c8ab8"},"schema_version":"1.0","source":{"id":"cond-mat/0703075","kind":"arxiv","version":3}},"canonical_sha256":"6c871c8b8d8e38adca7bb5775e9375877ce2c93e32a80bd7ef5adfe006205c0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c871c8b8d8e38adca7bb5775e9375877ce2c93e32a80bd7ef5adfe006205c0e","first_computed_at":"2026-07-04T15:03:08.988427Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:03:08.988427Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"inxgzBVXizkNW3P++HnX849v4DfFPFhnLXE34YtT9MU4kPNJ8BIyDZkhM5m3u/OjlyQzgrfBmfTICqcpeNI5CA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:03:08.988839Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0703075","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e62dc763caea7c4955e0b5d049a2898b4ae6e852f9e15690981591ae10883933","sha256:7552b5a19ba08a790c8ece0a62854e09ff220883deca234b20bf2c2303f68df7"],"state_sha256":"b31fddf75ec6a65bc9a458cd3bcb4b28cf5315694b0ff4d629571e606ef1d5a6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ypcHIUXvppnHzW4OclixCjFlCGLAcjyuBZ1b+60y9NvKT/wdculSNtB71QzZePWegxNGZb3jwgauCt5qyWrhCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:04:43.962727Z","bundle_sha256":"f0d0f2dde88cbebb24973bb0eec7364ce3587fe61a7e60f87a38cba8e3207aaa"}}