{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DOBVN2DONSBV4WEPLTZX6O5Y7Y","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":"6507a3ef3fa87d4761f736a51b50969a69966ff199c06882e1462ce858402198","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-06-27T13:29:46Z","title_canon_sha256":"60a36e36e37db0b13ca50154af361651e8d53e101424bd1bf7411c54fa778267"},"schema_version":"1.0","source":{"id":"1906.11623","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.11623","created_at":"2026-05-17T23:40:23Z"},{"alias_kind":"arxiv_version","alias_value":"1906.11623v2","created_at":"2026-05-17T23:40:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.11623","created_at":"2026-05-17T23:40:23Z"},{"alias_kind":"pith_short_12","alias_value":"DOBVN2DONSBV","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"DOBVN2DONSBV4WEP","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"DOBVN2DO","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:bd9c3c59145d1ca41232c2fe8f05b773abe0c8891f71f70e320aaf6cddd85144","target":"graph","created_at":"2026-05-17T23:40:23Z","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":"Phase-randomized optical homodyne detection is a well-known technique for performing quantum state tomography. So far, it has been mainly considered a sophisticated tool for laboratory experiments but unsuitable for practical applications. In this work, we change the perspective and employ this technique to set up a practical continuous-variable quantum random number generator. We exploit a phase-randomized local oscillator realized with a gain-switched laser to bound the min-entropy and extract true randomness from a completely uncharacterized input, potentially controlled by a malicious adve","authors_text":"Andrew Shields, Davide G. Marangon, Marco Lucamarini, Peter Raymond Smith, Zhiliang Yuan","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-06-27T13:29:46Z","title":"Simple source device-independent continuous-variable quantum random number generator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.11623","kind":"arxiv","version":2},"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:e76c922cebaa89b2815cd46890a57ee0f487d92d2caee5f51ce0bfa9fd46e253","target":"record","created_at":"2026-05-17T23:40:23Z","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":"6507a3ef3fa87d4761f736a51b50969a69966ff199c06882e1462ce858402198","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-06-27T13:29:46Z","title_canon_sha256":"60a36e36e37db0b13ca50154af361651e8d53e101424bd1bf7411c54fa778267"},"schema_version":"1.0","source":{"id":"1906.11623","kind":"arxiv","version":2}},"canonical_sha256":"1b8356e86e6c835e588f5cf37f3bb8fe17c4ac99042201acd3c5bf0069a06688","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b8356e86e6c835e588f5cf37f3bb8fe17c4ac99042201acd3c5bf0069a06688","first_computed_at":"2026-05-17T23:40:23.095184Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:23.095184Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UMhuWTUAIJeii+Vlf81izqQTaJEvGNzo7uTpVDwvyjNwz6gEpWK0o45I91lzfmmlzz2o5NJVkSwLxsSObcNODQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:23.095954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.11623","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e76c922cebaa89b2815cd46890a57ee0f487d92d2caee5f51ce0bfa9fd46e253","sha256:bd9c3c59145d1ca41232c2fe8f05b773abe0c8891f71f70e320aaf6cddd85144"],"state_sha256":"1847f699092aac9088f6ddb0b2dc0d2f4298228a03b5cc8b952a365a33124673"}