{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:IVJVRJD4BLDTWVUGB46LRGZQPN","short_pith_number":"pith:IVJVRJD4","canonical_record":{"source":{"id":"1510.01203","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-05T16:12:53Z","cross_cats_sorted":[],"title_canon_sha256":"f9b25b1d78f29f9cd14fb61eb05bf4304f1c103111ac88ee3ad99b82be4368a2","abstract_canon_sha256":"0e7d4c3bff406452bc0a58a91fad4c84a6eac0f73e4eff9965b81f4c2cc3ea0b"},"schema_version":"1.0"},"canonical_sha256":"455358a47c0ac73b56860f3cb89b307b5c9f92aa8eb977a1b85d8b88c909bc83","source":{"kind":"arxiv","id":"1510.01203","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01203","created_at":"2026-05-18T01:14:44Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01203v1","created_at":"2026-05-18T01:14:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01203","created_at":"2026-05-18T01:14:44Z"},{"alias_kind":"pith_short_12","alias_value":"IVJVRJD4BLDT","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IVJVRJD4BLDTWVUG","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IVJVRJD4","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:IVJVRJD4BLDTWVUGB46LRGZQPN","target":"record","payload":{"canonical_record":{"source":{"id":"1510.01203","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-05T16:12:53Z","cross_cats_sorted":[],"title_canon_sha256":"f9b25b1d78f29f9cd14fb61eb05bf4304f1c103111ac88ee3ad99b82be4368a2","abstract_canon_sha256":"0e7d4c3bff406452bc0a58a91fad4c84a6eac0f73e4eff9965b81f4c2cc3ea0b"},"schema_version":"1.0"},"canonical_sha256":"455358a47c0ac73b56860f3cb89b307b5c9f92aa8eb977a1b85d8b88c909bc83","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:14:44.907359Z","signature_b64":"9Scyg2eXFnjXHTN4UIyt25EuJ0zWaNsdpcxyTfp/q9vJhmJ/QNlY8svYTT3cPG90R06eKY+4vFa+GpAObN2aBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"455358a47c0ac73b56860f3cb89b307b5c9f92aa8eb977a1b85d8b88c909bc83","last_reissued_at":"2026-05-18T01:14:44.906727Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:14:44.906727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1510.01203","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":"2026-05-18T01:14:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UeQemH9yo4kpFNUXNweldhb7MqOZbHZvUKhtHmLvjt3VXHrhbxnG8cWI/KYP2o6/o+WhqfWe5aU1TwHi4f67Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T15:01:00.061110Z"},"content_sha256":"687e0f3bfcc73e0a2d3d146920a2959f5989ef1545f7d9254cbf005e20851b30","schema_version":"1.0","event_id":"sha256:687e0f3bfcc73e0a2d3d146920a2959f5989ef1545f7d9254cbf005e20851b30"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:IVJVRJD4BLDTWVUGB46LRGZQPN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resource-efficient measurement device independent entanglement witness","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Martin, C. C. W. Lim, D. Rosset, E. Verbanis, H. Zbinden, R. T. Thew","submitted_at":"2015-10-05T16:12:53Z","abstract_excerpt":"Imperfections in experimental measurement schemes can lead to falsely identifying, or over estimating, entanglement in a quantum system. A recent solution to this is to define schemes that are robust to measurement imperfections - measurement device independent entanglement witness (MDI-EW). Here we introduce a novel approach for MDI-EW, which significantly reduces the experimental complexity and is applicable to a wide range of physical systems. The scheme requires no prior description of the state, is detection loop-hole free, robust to classical communication, and works for all entangled qu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01203","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":"2026-05-18T01:14:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GFLAlVqaS8BQrwmuv5GILNFEWMRjBwOe2esaL1XIR4hXKu5/9xhISzCuXhjzK5bBL3l/z0m2M22KKNbNVQnlAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T15:01:00.061467Z"},"content_sha256":"ed44f94bc521b51f3faeb81899cf454a5a7a24c54e5c45b511a28552fab50a3b","schema_version":"1.0","event_id":"sha256:ed44f94bc521b51f3faeb81899cf454a5a7a24c54e5c45b511a28552fab50a3b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IVJVRJD4BLDTWVUGB46LRGZQPN/bundle.json","state_url":"https://pith.science/pith/IVJVRJD4BLDTWVUGB46LRGZQPN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IVJVRJD4BLDTWVUGB46LRGZQPN/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":"2026-05-28T15:01:00Z","links":{"resolver":"https://pith.science/pith/IVJVRJD4BLDTWVUGB46LRGZQPN","bundle":"https://pith.science/pith/IVJVRJD4BLDTWVUGB46LRGZQPN/bundle.json","state":"https://pith.science/pith/IVJVRJD4BLDTWVUGB46LRGZQPN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IVJVRJD4BLDTWVUGB46LRGZQPN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IVJVRJD4BLDTWVUGB46LRGZQPN","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":"0e7d4c3bff406452bc0a58a91fad4c84a6eac0f73e4eff9965b81f4c2cc3ea0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-05T16:12:53Z","title_canon_sha256":"f9b25b1d78f29f9cd14fb61eb05bf4304f1c103111ac88ee3ad99b82be4368a2"},"schema_version":"1.0","source":{"id":"1510.01203","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1510.01203","created_at":"2026-05-18T01:14:44Z"},{"alias_kind":"arxiv_version","alias_value":"1510.01203v1","created_at":"2026-05-18T01:14:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1510.01203","created_at":"2026-05-18T01:14:44Z"},{"alias_kind":"pith_short_12","alias_value":"IVJVRJD4BLDT","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"IVJVRJD4BLDTWVUG","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"IVJVRJD4","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:ed44f94bc521b51f3faeb81899cf454a5a7a24c54e5c45b511a28552fab50a3b","target":"graph","created_at":"2026-05-18T01:14:44Z","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":"Imperfections in experimental measurement schemes can lead to falsely identifying, or over estimating, entanglement in a quantum system. A recent solution to this is to define schemes that are robust to measurement imperfections - measurement device independent entanglement witness (MDI-EW). Here we introduce a novel approach for MDI-EW, which significantly reduces the experimental complexity and is applicable to a wide range of physical systems. The scheme requires no prior description of the state, is detection loop-hole free, robust to classical communication, and works for all entangled qu","authors_text":"A. Martin, C. C. W. Lim, D. Rosset, E. Verbanis, H. Zbinden, R. T. Thew","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-05T16:12:53Z","title":"Resource-efficient measurement device independent entanglement witness"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1510.01203","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":"sha256:687e0f3bfcc73e0a2d3d146920a2959f5989ef1545f7d9254cbf005e20851b30","target":"record","created_at":"2026-05-18T01:14:44Z","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":"0e7d4c3bff406452bc0a58a91fad4c84a6eac0f73e4eff9965b81f4c2cc3ea0b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-10-05T16:12:53Z","title_canon_sha256":"f9b25b1d78f29f9cd14fb61eb05bf4304f1c103111ac88ee3ad99b82be4368a2"},"schema_version":"1.0","source":{"id":"1510.01203","kind":"arxiv","version":1}},"canonical_sha256":"455358a47c0ac73b56860f3cb89b307b5c9f92aa8eb977a1b85d8b88c909bc83","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"455358a47c0ac73b56860f3cb89b307b5c9f92aa8eb977a1b85d8b88c909bc83","first_computed_at":"2026-05-18T01:14:44.906727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:14:44.906727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Scyg2eXFnjXHTN4UIyt25EuJ0zWaNsdpcxyTfp/q9vJhmJ/QNlY8svYTT3cPG90R06eKY+4vFa+GpAObN2aBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:14:44.907359Z","signed_message":"canonical_sha256_bytes"},"source_id":"1510.01203","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:687e0f3bfcc73e0a2d3d146920a2959f5989ef1545f7d9254cbf005e20851b30","sha256:ed44f94bc521b51f3faeb81899cf454a5a7a24c54e5c45b511a28552fab50a3b"],"state_sha256":"d3a2a2a383cdbdb441428bb7d74d2891da3f46d9ccab376b70804150e3220e6f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qEtUmJdijVYL0aYdr6L2KBHsZTn5f8to0AdvylC1R4DTjOKNrs+M36Ci0tBilnRwGe5nuWnuOPG3KpMeoDBDAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T15:01:00.063662Z","bundle_sha256":"e0125b82f74ea6129984056354aa178f84c7c8b98d53a6b2be34e26539267280"}}