{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ZUAJNYMDMBJEMXU7L62HOPA7HW","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":"bb5fbea8eb29a2937a13eb5683ca65e29df947c7e83b68f68ca413831084822d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-02-20T12:06:43Z","title_canon_sha256":"cca3a3e2839cd3c67f9cbf7c139351c44d0ed222759a14cebc669cbd5f932c3b"},"schema_version":"1.0","source":{"id":"1902.07529","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.07529","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"arxiv_version","alias_value":"1902.07529v3","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.07529","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_12","alias_value":"ZUAJNYMDMBJE","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_16","alias_value":"ZUAJNYMDMBJEMXU7","created_at":"2026-07-05T02:15:08Z"},{"alias_kind":"pith_short_8","alias_value":"ZUAJNYMD","created_at":"2026-07-05T02:15:08Z"}],"graph_snapshots":[{"event_id":"sha256:b6ad2262de8ff203ba3a257d29a6b3e7b6c58a0739b85081e4b3513a0c0ca8dd","target":"graph","created_at":"2026-07-05T02:15:08Z","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/1902.07529/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Randomness expansion where one generates a longer sequence of random numbers from a short one is viable in quantum mechanics but not allowed classically. Device-independent quantum randomness expansion provides a randomness resource of the highest security level. Here, we report the first experimental realization of device-independent quantum randomness expansion secure against quantum side information established through quantum probability estimation. We generate $5.47\\times10^8$ quantum-proof random bits while consuming $4.39\\times10^8$ bits of entropy, expanding our store of randomness by ","authors_text":"Bing Bai, Jian-Wei Pan, Jingyun Fan, Jun Zhang, Ming-Han Li, Qiang Zhang, Qi Zhao, Si-Ran Zhao, Wen-Zhao Liu, William J. Munro, Xingjian Zhang, Xiongfeng Ma, Yanbao Zhang, Yang Liu, Yuxiang Peng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-02-20T12:06:43Z","title":"Experimental Realization of Device-Independent Quantum Randomness Expansion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.07529","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:ed42ed10f2a3e05558bc41cc900035196c500d44a09d40e60dfd6b8c6000c8e7","target":"record","created_at":"2026-07-05T02:15:08Z","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":"bb5fbea8eb29a2937a13eb5683ca65e29df947c7e83b68f68ca413831084822d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-02-20T12:06:43Z","title_canon_sha256":"cca3a3e2839cd3c67f9cbf7c139351c44d0ed222759a14cebc669cbd5f932c3b"},"schema_version":"1.0","source":{"id":"1902.07529","kind":"arxiv","version":3}},"canonical_sha256":"cd0096e1836052465e9f5fb4773c1f3db6ada09dd88c719452e553744f3306bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd0096e1836052465e9f5fb4773c1f3db6ada09dd88c719452e553744f3306bd","first_computed_at":"2026-07-05T02:15:08.295226Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:15:08.295226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U7EMCaItyM0KaSi3gvTvipSPx9JR2WB/Y5sOyHyDmYqV+VL0KCSKzhguOpt+MtwHGmoW81M1uD4BmgLdo6MzBw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:15:08.295698Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.07529","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ed42ed10f2a3e05558bc41cc900035196c500d44a09d40e60dfd6b8c6000c8e7","sha256:b6ad2262de8ff203ba3a257d29a6b3e7b6c58a0739b85081e4b3513a0c0ca8dd"],"state_sha256":"e43bc15582239e16d53f9ba4a4e32a1ba8cc7f69b04529cace7cc739c20b45e9"}