{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4WIR3SQRJRHN3S7KQ3MLCMY4SP","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":"c7fdbc47250344dfe6ebbff24e8e32cc87d28567f33130cadec5d38b3a2f8478","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-08-18T01:51:59Z","title_canon_sha256":"c52a6d3d3870d58b57c50301af05c17c2e0f01941731bf8c0e81f9fd4f486a08"},"schema_version":"1.0","source":{"id":"1608.05155","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.05155","created_at":"2026-05-18T01:08:31Z"},{"alias_kind":"arxiv_version","alias_value":"1608.05155v1","created_at":"2026-05-18T01:08:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.05155","created_at":"2026-05-18T01:08:31Z"},{"alias_kind":"pith_short_12","alias_value":"4WIR3SQRJRHN","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4WIR3SQRJRHN3S7K","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4WIR3SQR","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:14b1f69918c7ef5d2bffc72fc9fbab0747f6eeaaae6580875e5173212898e49b","target":"graph","created_at":"2026-05-18T01:08:31Z","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":"We propose and demonstrate a technique for quantum random number generation based on the random population of the output spatial modes of a beam splitter when both inputs are simultaneously fed with indistinguishable weak coherent states. We simulate and experimentally validate the probability of generation of random bits as a function of the average photon number per input, and compare it to the traditional approach of a single weak coherent state transmitted through a beam-splitter, showing an improvement of up to 32\\%. The ensuing interference phenomenon reduces the probability of coinciden","authors_text":"G. B. Xavier, G. C. Amaral, G. P. Tempor\\~ao, J. P. von der Weid, T. Ferreira da Silva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-08-18T01:51:59Z","title":"Quantum random number generation enhanced by weak-coherent states interference"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.05155","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":"sha256:81255bf6013015a732ca89346b83c87d0de7fa9f6365f034a66de205be83d3da","target":"record","created_at":"2026-05-18T01:08:31Z","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":"c7fdbc47250344dfe6ebbff24e8e32cc87d28567f33130cadec5d38b3a2f8478","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-08-18T01:51:59Z","title_canon_sha256":"c52a6d3d3870d58b57c50301af05c17c2e0f01941731bf8c0e81f9fd4f486a08"},"schema_version":"1.0","source":{"id":"1608.05155","kind":"arxiv","version":1}},"canonical_sha256":"e5911dca114c4eddcbea86d8b1331c93ed5a71f3bf96d149ef575307f2eeedb9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5911dca114c4eddcbea86d8b1331c93ed5a71f3bf96d149ef575307f2eeedb9","first_computed_at":"2026-05-18T01:08:31.777116Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:31.777116Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KdIkA6qUvib7k7kPmxQx8x6dwtB1HP7xnW8y23OGrGO6AAXOdz7qUNcE5fwCmzEoZvjQIqS8t/AmM+tmWO2NDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:31.777584Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.05155","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81255bf6013015a732ca89346b83c87d0de7fa9f6365f034a66de205be83d3da","sha256:14b1f69918c7ef5d2bffc72fc9fbab0747f6eeaaae6580875e5173212898e49b"],"state_sha256":"8cf938c1f29b1fa61a3d2ec079bf116bd7362e5d9fcf098aa5d29258efec9794"}