{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:UFGRMGVRXYF3SL73WO67CQG3W5","short_pith_number":"pith:UFGRMGVR","canonical_record":{"source":{"id":"2209.09734","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-09-20T14:07:39Z","cross_cats_sorted":[],"title_canon_sha256":"c9a420f3dbfdb823ae9dde6a33aacd425566fb3237a118307d4a9db5424b8701","abstract_canon_sha256":"0bd016945e01f9c1731d6a81330786453588c0b877ff7f1de0023ec280b1cebd"},"schema_version":"1.0"},"canonical_sha256":"a14d161ab1be0bb92ffbb3bdf140dbb7434060291e5165fd5ced96f5c655e976","source":{"kind":"arxiv","id":"2209.09734","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.09734","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"arxiv_version","alias_value":"2209.09734v4","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.09734","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"pith_short_12","alias_value":"UFGRMGVRXYF3","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"pith_short_16","alias_value":"UFGRMGVRXYF3SL73","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"pith_short_8","alias_value":"UFGRMGVR","created_at":"2026-07-05T05:37:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:UFGRMGVRXYF3SL73WO67CQG3W5","target":"record","payload":{"canonical_record":{"source":{"id":"2209.09734","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-09-20T14:07:39Z","cross_cats_sorted":[],"title_canon_sha256":"c9a420f3dbfdb823ae9dde6a33aacd425566fb3237a118307d4a9db5424b8701","abstract_canon_sha256":"0bd016945e01f9c1731d6a81330786453588c0b877ff7f1de0023ec280b1cebd"},"schema_version":"1.0"},"canonical_sha256":"a14d161ab1be0bb92ffbb3bdf140dbb7434060291e5165fd5ced96f5c655e976","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:37:54.972697Z","signature_b64":"RjA3bKSFjM/Cy4U/53Mfa2hCW5JeM1m5pnlMdLuIAf8pOzskFa9/nND8pXzbBz0Jit+Hx+ZbR/xu/rPew3WkAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a14d161ab1be0bb92ffbb3bdf140dbb7434060291e5165fd5ced96f5c655e976","last_reissued_at":"2026-07-05T05:37:54.972183Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:37:54.972183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2209.09734","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:37:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HD19qvVJ1K1sxsbhQF4inNjfcoFDFocpj3MZbIKE0oAHVFjyPSAGafTJznSr2mY0EGYvE62R+VjLAr5z9mPHAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T14:46:57.939252Z"},"content_sha256":"0e24e0506b4f3fb64d35bce81838833b37a65df67a166e5b6b9f1b7e6a328b3f","schema_version":"1.0","event_id":"sha256:0e24e0506b4f3fb64d35bce81838833b37a65df67a166e5b6b9f1b7e6a328b3f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:UFGRMGVRXYF3SL73WO67CQG3W5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase randomness in a semiconductor laser: Issue of quantum random-number generation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexander Duplinskiy, Alexander Tumachek, Alexey Prokhodtsov, Denis Sych, Elizaveta Maksimova, Grigory Goltsman, Marius Puplauskis, Roman Shakhovoy, Selbi Hydyrova, Vadim Kovalyuk, Violetta Sharoglazova, Yury Kurochkin, Yury Mironov","submitted_at":"2022-09-20T14:07:39Z","abstract_excerpt":"Gain-switched lasers are in demand in numerous quantum applications, particularly, in systems of quantum key distribution and in various optical quantum random number generators. The reason for this popularity is natural phase randomization between gain-switched laser pulses. The idea of such randomization has become so familiar that most authors use it without regard to the features of the laser operation mode they use. However, at high repetition rates of laser pulses or when pulses are generated at a bias current close to the threshold, the phase randomization condition may be violated. Thi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.09734","kind":"arxiv","version":4},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2209.09734/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T05:37:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eSzh+WxprmdTqCmng8lzqPBpOJhvoUbvrY1JYvFU9CeUU4hZa4C15i10X8e08eGzC++5c8VahaeLl7jOrJJzAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-23T14:46:57.939771Z"},"content_sha256":"50d85fa881ae86b942e93f6351e32bb7ca6c41180101f9215b01a1e260a90108","schema_version":"1.0","event_id":"sha256:50d85fa881ae86b942e93f6351e32bb7ca6c41180101f9215b01a1e260a90108"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UFGRMGVRXYF3SL73WO67CQG3W5/bundle.json","state_url":"https://pith.science/pith/UFGRMGVRXYF3SL73WO67CQG3W5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UFGRMGVRXYF3SL73WO67CQG3W5/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":"2026-08-23T14:46:57Z","links":{"resolver":"https://pith.science/pith/UFGRMGVRXYF3SL73WO67CQG3W5","bundle":"https://pith.science/pith/UFGRMGVRXYF3SL73WO67CQG3W5/bundle.json","state":"https://pith.science/pith/UFGRMGVRXYF3SL73WO67CQG3W5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UFGRMGVRXYF3SL73WO67CQG3W5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:UFGRMGVRXYF3SL73WO67CQG3W5","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":"0bd016945e01f9c1731d6a81330786453588c0b877ff7f1de0023ec280b1cebd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-09-20T14:07:39Z","title_canon_sha256":"c9a420f3dbfdb823ae9dde6a33aacd425566fb3237a118307d4a9db5424b8701"},"schema_version":"1.0","source":{"id":"2209.09734","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2209.09734","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"arxiv_version","alias_value":"2209.09734v4","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.09734","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"pith_short_12","alias_value":"UFGRMGVRXYF3","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"pith_short_16","alias_value":"UFGRMGVRXYF3SL73","created_at":"2026-07-05T05:37:54Z"},{"alias_kind":"pith_short_8","alias_value":"UFGRMGVR","created_at":"2026-07-05T05:37:54Z"}],"graph_snapshots":[{"event_id":"sha256:50d85fa881ae86b942e93f6351e32bb7ca6c41180101f9215b01a1e260a90108","target":"graph","created_at":"2026-07-05T05:37:54Z","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/2209.09734/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Gain-switched lasers are in demand in numerous quantum applications, particularly, in systems of quantum key distribution and in various optical quantum random number generators. The reason for this popularity is natural phase randomization between gain-switched laser pulses. The idea of such randomization has become so familiar that most authors use it without regard to the features of the laser operation mode they use. However, at high repetition rates of laser pulses or when pulses are generated at a bias current close to the threshold, the phase randomization condition may be violated. Thi","authors_text":"Alexander Duplinskiy, Alexander Tumachek, Alexey Prokhodtsov, Denis Sych, Elizaveta Maksimova, Grigory Goltsman, Marius Puplauskis, Roman Shakhovoy, Selbi Hydyrova, Vadim Kovalyuk, Violetta Sharoglazova, Yury Kurochkin, Yury Mironov","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-09-20T14:07:39Z","title":"Phase randomness in a semiconductor laser: Issue of quantum random-number generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.09734","kind":"arxiv","version":4},"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":"sha256:0e24e0506b4f3fb64d35bce81838833b37a65df67a166e5b6b9f1b7e6a328b3f","target":"record","created_at":"2026-07-05T05:37:54Z","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":"0bd016945e01f9c1731d6a81330786453588c0b877ff7f1de0023ec280b1cebd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-09-20T14:07:39Z","title_canon_sha256":"c9a420f3dbfdb823ae9dde6a33aacd425566fb3237a118307d4a9db5424b8701"},"schema_version":"1.0","source":{"id":"2209.09734","kind":"arxiv","version":4}},"canonical_sha256":"a14d161ab1be0bb92ffbb3bdf140dbb7434060291e5165fd5ced96f5c655e976","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a14d161ab1be0bb92ffbb3bdf140dbb7434060291e5165fd5ced96f5c655e976","first_computed_at":"2026-07-05T05:37:54.972183Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:37:54.972183Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RjA3bKSFjM/Cy4U/53Mfa2hCW5JeM1m5pnlMdLuIAf8pOzskFa9/nND8pXzbBz0Jit+Hx+ZbR/xu/rPew3WkAA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:37:54.972697Z","signed_message":"canonical_sha256_bytes"},"source_id":"2209.09734","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e24e0506b4f3fb64d35bce81838833b37a65df67a166e5b6b9f1b7e6a328b3f","sha256:50d85fa881ae86b942e93f6351e32bb7ca6c41180101f9215b01a1e260a90108"],"state_sha256":"dce143b8581f8e0c6017d9e0d3bfbffdc50c09e6d216cb2ee88df39e558c279a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1yVpc24VvI12OujM6Jz7ArBXlps6jmF9AGa7lKHZakwGugY5k8x8kWSZ1bmsyVZX2NrQtdCKObBj+yu56vMtCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-23T14:46:57.944713Z","bundle_sha256":"40278dfdb359c5a418f32ca6afd437315b0eba539f856b8b3bd5c959079df93f"}}