{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:H52MMWX3N4U4M4ORKTD52GOBBJ","short_pith_number":"pith:H52MMWX3","canonical_record":{"source":{"id":"1401.5658","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-01-22T13:24:00Z","cross_cats_sorted":[],"title_canon_sha256":"3999f34be00bb6063b8e9d9a9dad0cf10de7c531929c66c8e5cb226266ae07a2","abstract_canon_sha256":"e6e7d27d943f3e7827812d479708fcfcc58960c9773560c0226caa309a416fb1"},"schema_version":"1.0"},"canonical_sha256":"3f74c65afb6f29c671d154c7dd19c10a6af8e99d4eddbd14c73da296a54077db","source":{"kind":"arxiv","id":"1401.5658","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.5658","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"1401.5658v1","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.5658","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"H52MMWX3N4U4","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"H52MMWX3N4U4M4OR","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"H52MMWX3","created_at":"2026-05-18T12:28:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:H52MMWX3N4U4M4ORKTD52GOBBJ","target":"record","payload":{"canonical_record":{"source":{"id":"1401.5658","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-01-22T13:24:00Z","cross_cats_sorted":[],"title_canon_sha256":"3999f34be00bb6063b8e9d9a9dad0cf10de7c531929c66c8e5cb226266ae07a2","abstract_canon_sha256":"e6e7d27d943f3e7827812d479708fcfcc58960c9773560c0226caa309a416fb1"},"schema_version":"1.0"},"canonical_sha256":"3f74c65afb6f29c671d154c7dd19c10a6af8e99d4eddbd14c73da296a54077db","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:45:17.978773Z","signature_b64":"njOrFIR72jD5z5O7yLkQjFaYba+7Ft+lKWmJqYOWAKht8N4PfdzZ3SU51GFUaf5QucKSIOjBuuHF/sKwqCI1BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f74c65afb6f29c671d154c7dd19c10a6af8e99d4eddbd14c73da296a54077db","last_reissued_at":"2026-05-18T01:45:17.978145Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:45:17.978145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.5658","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":"2026-05-18T01:45:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ds/VfBedli4GO8W6zQNzqM5obD5g9OpXAuVaR61AVE9Dhvwqw7O8zDBM8SA1Qz7K0+Jl/DkltJxnKJsmtkPRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T11:39:59.390792Z"},"content_sha256":"4e2336940e40765f54ab6e6a67c8800f67026e3a64ee6fd988088fa465760282","schema_version":"1.0","event_id":"sha256:4e2336940e40765f54ab6e6a67c8800f67026e3a64ee6fd988088fa465760282"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:H52MMWX3N4U4M4ORKTD52GOBBJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultra-fast quantum randomness generation by accelerated phase diffusion in a pulsed laser diode","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Acin, C. Abellan, J. Capmany, M. Curty, M. Jofre, M. W. Mitchell, V. Pruneri, W. Amaya","submitted_at":"2014-01-22T13:24:00Z","abstract_excerpt":"We demonstrate a high bit-rate quantum random number generator by interferometric detection of phase diffusion in a gain-switched DFB laser diode. Gain switching at few-GHz frequencies produces a train of bright pulses with nearly equal amplitudes and random phases. An unbalanced Mach-Zehnder interferometer is used to interfere subsequent pulses and thereby generate strong random-amplitude pulses, which are detected and digitized to produce a high-rate random bit string. Using established models of semiconductor laser field dynamics, we predict a regime of high visibility interference and near"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.5658","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":"2026-05-18T01:45:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LbgQAuLqZWVdVE00uQE3Yp/mojWhDMs0Xb8CU99+buID1IVVyjQE0xVwyRMrQv/NL+YfXbj2UPHMhp6iBHSpAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T11:39:59.391132Z"},"content_sha256":"9e0a697c278ea872a65396a788d98c1a6a4437ed26de4ea622e6ab6c96e67993","schema_version":"1.0","event_id":"sha256:9e0a697c278ea872a65396a788d98c1a6a4437ed26de4ea622e6ab6c96e67993"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H52MMWX3N4U4M4ORKTD52GOBBJ/bundle.json","state_url":"https://pith.science/pith/H52MMWX3N4U4M4ORKTD52GOBBJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H52MMWX3N4U4M4ORKTD52GOBBJ/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":"2026-05-20T11:39:59Z","links":{"resolver":"https://pith.science/pith/H52MMWX3N4U4M4ORKTD52GOBBJ","bundle":"https://pith.science/pith/H52MMWX3N4U4M4ORKTD52GOBBJ/bundle.json","state":"https://pith.science/pith/H52MMWX3N4U4M4ORKTD52GOBBJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H52MMWX3N4U4M4ORKTD52GOBBJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:H52MMWX3N4U4M4ORKTD52GOBBJ","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":"e6e7d27d943f3e7827812d479708fcfcc58960c9773560c0226caa309a416fb1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-01-22T13:24:00Z","title_canon_sha256":"3999f34be00bb6063b8e9d9a9dad0cf10de7c531929c66c8e5cb226266ae07a2"},"schema_version":"1.0","source":{"id":"1401.5658","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.5658","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"arxiv_version","alias_value":"1401.5658v1","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.5658","created_at":"2026-05-18T01:45:17Z"},{"alias_kind":"pith_short_12","alias_value":"H52MMWX3N4U4","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"H52MMWX3N4U4M4OR","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"H52MMWX3","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:9e0a697c278ea872a65396a788d98c1a6a4437ed26de4ea622e6ab6c96e67993","target":"graph","created_at":"2026-05-18T01:45:17Z","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 demonstrate a high bit-rate quantum random number generator by interferometric detection of phase diffusion in a gain-switched DFB laser diode. Gain switching at few-GHz frequencies produces a train of bright pulses with nearly equal amplitudes and random phases. An unbalanced Mach-Zehnder interferometer is used to interfere subsequent pulses and thereby generate strong random-amplitude pulses, which are detected and digitized to produce a high-rate random bit string. Using established models of semiconductor laser field dynamics, we predict a regime of high visibility interference and near","authors_text":"A. Acin, C. Abellan, J. Capmany, M. Curty, M. Jofre, M. W. Mitchell, V. Pruneri, W. Amaya","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-01-22T13:24:00Z","title":"Ultra-fast quantum randomness generation by accelerated phase diffusion in a pulsed laser diode"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.5658","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":"sha256:4e2336940e40765f54ab6e6a67c8800f67026e3a64ee6fd988088fa465760282","target":"record","created_at":"2026-05-18T01:45:17Z","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":"e6e7d27d943f3e7827812d479708fcfcc58960c9773560c0226caa309a416fb1","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-01-22T13:24:00Z","title_canon_sha256":"3999f34be00bb6063b8e9d9a9dad0cf10de7c531929c66c8e5cb226266ae07a2"},"schema_version":"1.0","source":{"id":"1401.5658","kind":"arxiv","version":1}},"canonical_sha256":"3f74c65afb6f29c671d154c7dd19c10a6af8e99d4eddbd14c73da296a54077db","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f74c65afb6f29c671d154c7dd19c10a6af8e99d4eddbd14c73da296a54077db","first_computed_at":"2026-05-18T01:45:17.978145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:45:17.978145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"njOrFIR72jD5z5O7yLkQjFaYba+7Ft+lKWmJqYOWAKht8N4PfdzZ3SU51GFUaf5QucKSIOjBuuHF/sKwqCI1BA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:45:17.978773Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.5658","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e2336940e40765f54ab6e6a67c8800f67026e3a64ee6fd988088fa465760282","sha256:9e0a697c278ea872a65396a788d98c1a6a4437ed26de4ea622e6ab6c96e67993"],"state_sha256":"c1bc993d067137614a5d0f390cc8552844f4ecf41dabe6c2927cff2f43262891"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"irgJwREFa4HeFOh2dlU+zy7zh1RPx0/LRIorxva9lJuMjEqlIBcJVfDLRyaCMdsYevj/1KTP8pDpnnTYyu8aCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T11:39:59.394926Z","bundle_sha256":"48082dce71678b2b312d21347d3a61361d1decc61ae4982be5064862bcbe32c4"}}