{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LCRJJHN6YMBRQFTBHQZTOLBN72","short_pith_number":"pith:LCRJJHN6","canonical_record":{"source":{"id":"1701.08749","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-30T18:39:42Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"0b3020698e4b91c58cfe59bfd8bcddba0e316137984d362152a9949ad5bd3bb8","abstract_canon_sha256":"aefb59182341d6e1188c1729cd66ecafc8ab760af56f49d72367646d074c08a5"},"schema_version":"1.0"},"canonical_sha256":"58a2949dbec3031816613c33372c2dfeb3cdfcc18cc563114e2643738a5a3a75","source":{"kind":"arxiv","id":"1701.08749","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.08749","created_at":"2026-05-18T00:44:35Z"},{"alias_kind":"arxiv_version","alias_value":"1701.08749v1","created_at":"2026-05-18T00:44:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.08749","created_at":"2026-05-18T00:44:35Z"},{"alias_kind":"pith_short_12","alias_value":"LCRJJHN6YMBR","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LCRJJHN6YMBRQFTB","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LCRJJHN6","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LCRJJHN6YMBRQFTBHQZTOLBN72","target":"record","payload":{"canonical_record":{"source":{"id":"1701.08749","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-30T18:39:42Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"0b3020698e4b91c58cfe59bfd8bcddba0e316137984d362152a9949ad5bd3bb8","abstract_canon_sha256":"aefb59182341d6e1188c1729cd66ecafc8ab760af56f49d72367646d074c08a5"},"schema_version":"1.0"},"canonical_sha256":"58a2949dbec3031816613c33372c2dfeb3cdfcc18cc563114e2643738a5a3a75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:35.129448Z","signature_b64":"6Xof1CSxM3Uws7JcGVoMm90EP8qnaUSxUH2mabxKEErmjA+bvpj7YLaGIytj/pxmK4l7mMBp3WPG1gkTwyx2CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"58a2949dbec3031816613c33372c2dfeb3cdfcc18cc563114e2643738a5a3a75","last_reissued_at":"2026-05-18T00:44:35.128985Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:35.128985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.08749","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:44:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KAgCZEzY9ZaL7v5sjBlKJtbewfdle0CXIuTJqdHkRX9HTMt3NxLoDpaSGy+tp8n4evT9g8M5DeMOEAGoLxXFCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:18:53.555841Z"},"content_sha256":"adb02351596b245ea9efc1a5fbd0d97d8e77ee63224118fe1f7d59cbc01151c0","schema_version":"1.0","event_id":"sha256:adb02351596b245ea9efc1a5fbd0d97d8e77ee63224118fe1f7d59cbc01151c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LCRJJHN6YMBRQFTBHQZTOLBN72","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Schr\\\"odinger cat and Werner state disentanglement simulated by trapped ion systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"quant-ph","authors_text":"Alex E. Bernardini, Victor A. S. V. Bittencourt","submitted_at":"2017-01-30T18:39:42Z","abstract_excerpt":"Disentanglement and loss of quantum correlations due to one global collective noise effect are described for two-qubit Schr\\\"odinger cat and Werner states of a four level trapped ion quantum system. Once the Jaynes-Cummings ionic interactions are mapped onto a Dirac spinor structure, the elementary tools for computing quantum correlations of two-qubit ionic states are provided. With two-qubit quantum numbers related to the total angular momentum and to its projection onto the direction of an external magnetic field (which lifts the degeneracy of the ion's internal levels), a complete analytica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08749","kind":"arxiv","version":1},"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":"2026-05-18T00:44:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DwWd+W5BDj8EYQh2iwKbhQnN/irThdj3oYSi4epGqXWAekl9g/u4QwcvKB1tiJtDW2MCPqyx5Ke4l/BLKsfKDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T17:18:53.556488Z"},"content_sha256":"bf536eb6c0537c332d1ae8f04589d3351bc12ca95e00777bd499516d18fffbd0","schema_version":"1.0","event_id":"sha256:bf536eb6c0537c332d1ae8f04589d3351bc12ca95e00777bd499516d18fffbd0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LCRJJHN6YMBRQFTBHQZTOLBN72/bundle.json","state_url":"https://pith.science/pith/LCRJJHN6YMBRQFTBHQZTOLBN72/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LCRJJHN6YMBRQFTBHQZTOLBN72/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":"2026-05-30T17:18:53Z","links":{"resolver":"https://pith.science/pith/LCRJJHN6YMBRQFTBHQZTOLBN72","bundle":"https://pith.science/pith/LCRJJHN6YMBRQFTBHQZTOLBN72/bundle.json","state":"https://pith.science/pith/LCRJJHN6YMBRQFTBHQZTOLBN72/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LCRJJHN6YMBRQFTBHQZTOLBN72/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LCRJJHN6YMBRQFTBHQZTOLBN72","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":"aefb59182341d6e1188c1729cd66ecafc8ab760af56f49d72367646d074c08a5","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-30T18:39:42Z","title_canon_sha256":"0b3020698e4b91c58cfe59bfd8bcddba0e316137984d362152a9949ad5bd3bb8"},"schema_version":"1.0","source":{"id":"1701.08749","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.08749","created_at":"2026-05-18T00:44:35Z"},{"alias_kind":"arxiv_version","alias_value":"1701.08749v1","created_at":"2026-05-18T00:44:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.08749","created_at":"2026-05-18T00:44:35Z"},{"alias_kind":"pith_short_12","alias_value":"LCRJJHN6YMBR","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LCRJJHN6YMBRQFTB","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LCRJJHN6","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:bf536eb6c0537c332d1ae8f04589d3351bc12ca95e00777bd499516d18fffbd0","target":"graph","created_at":"2026-05-18T00:44:35Z","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":"Disentanglement and loss of quantum correlations due to one global collective noise effect are described for two-qubit Schr\\\"odinger cat and Werner states of a four level trapped ion quantum system. Once the Jaynes-Cummings ionic interactions are mapped onto a Dirac spinor structure, the elementary tools for computing quantum correlations of two-qubit ionic states are provided. With two-qubit quantum numbers related to the total angular momentum and to its projection onto the direction of an external magnetic field (which lifts the degeneracy of the ion's internal levels), a complete analytica","authors_text":"Alex E. Bernardini, Victor A. S. V. Bittencourt","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-30T18:39:42Z","title":"Schr\\\"odinger cat and Werner state disentanglement simulated by trapped ion systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.08749","kind":"arxiv","version":1},"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:adb02351596b245ea9efc1a5fbd0d97d8e77ee63224118fe1f7d59cbc01151c0","target":"record","created_at":"2026-05-18T00:44:35Z","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":"aefb59182341d6e1188c1729cd66ecafc8ab760af56f49d72367646d074c08a5","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-01-30T18:39:42Z","title_canon_sha256":"0b3020698e4b91c58cfe59bfd8bcddba0e316137984d362152a9949ad5bd3bb8"},"schema_version":"1.0","source":{"id":"1701.08749","kind":"arxiv","version":1}},"canonical_sha256":"58a2949dbec3031816613c33372c2dfeb3cdfcc18cc563114e2643738a5a3a75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58a2949dbec3031816613c33372c2dfeb3cdfcc18cc563114e2643738a5a3a75","first_computed_at":"2026-05-18T00:44:35.128985Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:44:35.128985Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6Xof1CSxM3Uws7JcGVoMm90EP8qnaUSxUH2mabxKEErmjA+bvpj7YLaGIytj/pxmK4l7mMBp3WPG1gkTwyx2CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:44:35.129448Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.08749","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:adb02351596b245ea9efc1a5fbd0d97d8e77ee63224118fe1f7d59cbc01151c0","sha256:bf536eb6c0537c332d1ae8f04589d3351bc12ca95e00777bd499516d18fffbd0"],"state_sha256":"0d917fd8bff7bc54901b9ec76aa5dafafdd2a86737295617cfb4d4284eb39c24"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3cEYOwaW7P+vM8pH0ZsJgaCwHXrKj8ykpDeQeWI/MEs8V4EVoya4JAqEd5mhyDhJZDFRXHaj7Fq5OsURO9R6Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T17:18:53.560011Z","bundle_sha256":"0c5a6eb43185710a1722eddb78146e517e08b51a763543698d1e141d28c1b9eb"}}