{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:F5SJTE2ECPUE4B6PK2NAKRCF5C","short_pith_number":"pith:F5SJTE2E","canonical_record":{"source":{"id":"2010.12259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-10-23T09:40:01Z","cross_cats_sorted":[],"title_canon_sha256":"da665cd27812b575c48a01ec357707cad8ec6d9b2ae518ce9037d60d46e399b5","abstract_canon_sha256":"2c6cff2d3edb01cc1d3d80f99694431cb06f05b640f336c83dbd8343e99cdbfc"},"schema_version":"1.0"},"canonical_sha256":"2f6499934413e84e07cf569a054445e8bd2e7af02bf5057164773e9f540aeb4c","source":{"kind":"arxiv","id":"2010.12259","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.12259","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"arxiv_version","alias_value":"2010.12259v1","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.12259","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"pith_short_12","alias_value":"F5SJTE2ECPUE","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"pith_short_16","alias_value":"F5SJTE2ECPUE4B6P","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"pith_short_8","alias_value":"F5SJTE2E","created_at":"2026-07-05T03:27:26Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:F5SJTE2ECPUE4B6PK2NAKRCF5C","target":"record","payload":{"canonical_record":{"source":{"id":"2010.12259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-10-23T09:40:01Z","cross_cats_sorted":[],"title_canon_sha256":"da665cd27812b575c48a01ec357707cad8ec6d9b2ae518ce9037d60d46e399b5","abstract_canon_sha256":"2c6cff2d3edb01cc1d3d80f99694431cb06f05b640f336c83dbd8343e99cdbfc"},"schema_version":"1.0"},"canonical_sha256":"2f6499934413e84e07cf569a054445e8bd2e7af02bf5057164773e9f540aeb4c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:27:26.873520Z","signature_b64":"uv9Z7PuCBfVz2J30I0csDikk7cO/HrxmCDuhwikNwmCUK5TwB4kWoKCPuW1JHIenLEsfdZ/nej5aOaJBRkRzBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f6499934413e84e07cf569a054445e8bd2e7af02bf5057164773e9f540aeb4c","last_reissued_at":"2026-07-05T03:27:26.873047Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:27:26.873047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2010.12259","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":"2026-07-05T03:27:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bot+wrmtymhgyI7C+3LZq+I+/IHBGjS/DiJc5jzi1npoZidKPtIDDsF71hG3OnEjgjDcwYUKj71xt/mUxZNpCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T18:17:29.518742Z"},"content_sha256":"b1fc6fbe6e88b256037c5faa64e31da9dff6ccb71fbded7c7617eb1e67cac3f8","schema_version":"1.0","event_id":"sha256:b1fc6fbe6e88b256037c5faa64e31da9dff6ccb71fbded7c7617eb1e67cac3f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:F5SJTE2ECPUE4B6PK2NAKRCF5C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Protocols for creating and distilling multipartite GHZ states with Bell pairs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"David Elkouss, Kenneth Goodenough, Runsheng Ouyang, S\\'ebastian de Bone","submitted_at":"2020-10-23T09:40:01Z","abstract_excerpt":"The distribution of high-quality Greenberger-Horne-Zeilinger (GHZ) states is at the heart of many quantum communication tasks, ranging from extending the baseline of telescopes to secret sharing. They also play an important role in error-correction architectures for distributed quantum computation, where Bell pairs can be leveraged to create an entangled network of quantum computers. We investigate the creation and distillation of GHZ states out of non-perfect Bell pairs over quantum networks. In particular, we introduce a heuristic dynamic programming algorithm to optimize over a large class "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.12259","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2010.12259/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":"2026-07-05T03:27:26Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iZef8WfBFUPifjR+3ieeap/a5XIaZK0pEFH7kgkEsnlBXwIoVVLp/iVKse/jLxgdemZyvviu17dpZmMGP8JaAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T18:17:29.519530Z"},"content_sha256":"4e3305e1b285ced73c8f41ca6f04cb3eb6a4c612b2aa0d08cd4bfb349b75dd83","schema_version":"1.0","event_id":"sha256:4e3305e1b285ced73c8f41ca6f04cb3eb6a4c612b2aa0d08cd4bfb349b75dd83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C/bundle.json","state_url":"https://pith.science/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C/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":"2026-08-13T18:17:29Z","links":{"resolver":"https://pith.science/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C","bundle":"https://pith.science/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C/bundle.json","state":"https://pith.science/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F5SJTE2ECPUE4B6PK2NAKRCF5C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:F5SJTE2ECPUE4B6PK2NAKRCF5C","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":"2c6cff2d3edb01cc1d3d80f99694431cb06f05b640f336c83dbd8343e99cdbfc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-10-23T09:40:01Z","title_canon_sha256":"da665cd27812b575c48a01ec357707cad8ec6d9b2ae518ce9037d60d46e399b5"},"schema_version":"1.0","source":{"id":"2010.12259","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2010.12259","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"arxiv_version","alias_value":"2010.12259v1","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2010.12259","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"pith_short_12","alias_value":"F5SJTE2ECPUE","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"pith_short_16","alias_value":"F5SJTE2ECPUE4B6P","created_at":"2026-07-05T03:27:26Z"},{"alias_kind":"pith_short_8","alias_value":"F5SJTE2E","created_at":"2026-07-05T03:27:26Z"}],"graph_snapshots":[{"event_id":"sha256:4e3305e1b285ced73c8f41ca6f04cb3eb6a4c612b2aa0d08cd4bfb349b75dd83","target":"graph","created_at":"2026-07-05T03:27:26Z","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/2010.12259/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The distribution of high-quality Greenberger-Horne-Zeilinger (GHZ) states is at the heart of many quantum communication tasks, ranging from extending the baseline of telescopes to secret sharing. They also play an important role in error-correction architectures for distributed quantum computation, where Bell pairs can be leveraged to create an entangled network of quantum computers. We investigate the creation and distillation of GHZ states out of non-perfect Bell pairs over quantum networks. In particular, we introduce a heuristic dynamic programming algorithm to optimize over a large class ","authors_text":"David Elkouss, Kenneth Goodenough, Runsheng Ouyang, S\\'ebastian de Bone","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-10-23T09:40:01Z","title":"Protocols for creating and distilling multipartite GHZ states with Bell pairs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2010.12259","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:b1fc6fbe6e88b256037c5faa64e31da9dff6ccb71fbded7c7617eb1e67cac3f8","target":"record","created_at":"2026-07-05T03:27:26Z","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":"2c6cff2d3edb01cc1d3d80f99694431cb06f05b640f336c83dbd8343e99cdbfc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-10-23T09:40:01Z","title_canon_sha256":"da665cd27812b575c48a01ec357707cad8ec6d9b2ae518ce9037d60d46e399b5"},"schema_version":"1.0","source":{"id":"2010.12259","kind":"arxiv","version":1}},"canonical_sha256":"2f6499934413e84e07cf569a054445e8bd2e7af02bf5057164773e9f540aeb4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f6499934413e84e07cf569a054445e8bd2e7af02bf5057164773e9f540aeb4c","first_computed_at":"2026-07-05T03:27:26.873047Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:27:26.873047Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uv9Z7PuCBfVz2J30I0csDikk7cO/HrxmCDuhwikNwmCUK5TwB4kWoKCPuW1JHIenLEsfdZ/nej5aOaJBRkRzBg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:27:26.873520Z","signed_message":"canonical_sha256_bytes"},"source_id":"2010.12259","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b1fc6fbe6e88b256037c5faa64e31da9dff6ccb71fbded7c7617eb1e67cac3f8","sha256:4e3305e1b285ced73c8f41ca6f04cb3eb6a4c612b2aa0d08cd4bfb349b75dd83"],"state_sha256":"d5f1e30cf307d5bc8f5d347d96d6cb13a20885f33c6be3768dfaef1bde2d552b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yDTbOA7Hwy0WrSImO0BWCZIACHvOY+OCldxBuzfKkXf7EflF7MBW4Vos0GZnGXSboxFm9p6P4QqkNoyU9OuwCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T18:17:29.524221Z","bundle_sha256":"56138b022f588b7f66fcb7b7c1f5e132561a1d00dfb118935fba59cf8fe4d836"}}