{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7QLJMWMJOSCYS7CZA4ERXSHTZK","short_pith_number":"pith:7QLJMWMJ","canonical_record":{"source":{"id":"2606.04947","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-06-03T14:35:59Z","cross_cats_sorted":[],"title_canon_sha256":"0762978b16a5873ee861c93bcdc8fcca384edb89bc6cfe422713730996380614","abstract_canon_sha256":"71a7760173aa4032951b8b59aced6cd48400340c1c51db6b420a16220c7daf37"},"schema_version":"1.0"},"canonical_sha256":"fc169659897485897c5907091bc8f3cab35a3296b820e07b67580a674e4abd69","source":{"kind":"arxiv","id":"2606.04947","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04947","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04947v1","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04947","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"pith_short_12","alias_value":"7QLJMWMJOSCY","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"pith_short_16","alias_value":"7QLJMWMJOSCYS7CZ","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"pith_short_8","alias_value":"7QLJMWMJ","created_at":"2026-06-04T01:09:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7QLJMWMJOSCYS7CZA4ERXSHTZK","target":"record","payload":{"canonical_record":{"source":{"id":"2606.04947","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-06-03T14:35:59Z","cross_cats_sorted":[],"title_canon_sha256":"0762978b16a5873ee861c93bcdc8fcca384edb89bc6cfe422713730996380614","abstract_canon_sha256":"71a7760173aa4032951b8b59aced6cd48400340c1c51db6b420a16220c7daf37"},"schema_version":"1.0"},"canonical_sha256":"fc169659897485897c5907091bc8f3cab35a3296b820e07b67580a674e4abd69","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T01:09:57.446532Z","signature_b64":"l3jnbda6dHUms4VQFKQduq5go0IZcGtAsoQm9LUhRAC1sMkLztyTvt2dazlXAlO2hJNSEH+IIid5jrrws+wUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc169659897485897c5907091bc8f3cab35a3296b820e07b67580a674e4abd69","last_reissued_at":"2026-06-04T01:09:57.445913Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T01:09:57.445913Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.04947","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":"2026-06-04T01:09:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"850rJ2RdWG5/pBTiaWCQNnpXFNt8cOJ6NrB+norrp6aNZK+DuTpeVsaCzQipfAe6G6dvN9yqWGq1dRwyUzmtDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T14:45:12.025142Z"},"content_sha256":"1bad28b3b4df40dad731d6ed6d567ef222f93eb8695852700e09314f2ad55b49","schema_version":"1.0","event_id":"sha256:1bad28b3b4df40dad731d6ed6d567ef222f93eb8695852700e09314f2ad55b49"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7QLJMWMJOSCYS7CZA4ERXSHTZK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Phase-correlation-free quantum key distribution source operating at gigahertz rates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alessandro Marcomini, Aur\\'elien Cavali\\'e, Boris Korzh, David Cabrerizo, Gianluca Boso, Lo\\\"ic Millet, Marcos Curty, Raphael Houlmann, Rob Thew, Shashank Kumar, Towsif Taher","submitted_at":"2026-06-03T14:35:59Z","abstract_excerpt":"Phase randomization is essential for the security of practical decoy-state quantum key distribution (QKD) systems. Commonly, implementations rely on laser sources which are either actively phase-randomized, or gain-switched. However, at high repetition rates these show correlations, which can ultimately compromise security and performance. We present a 1.25 GHz phase-randomized QKD source based on a super-luminescent light emitting diode (SLED) operating in the C-band as a compact and cost-effective alternative. The source generates $\\sim100$ ps optical pulses with $400$ ps pulse-to-pulse sepa"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04947","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.04947/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":"2026-06-04T01:09:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rf26UsgH0pqmVAzCJzBGsZfMIeI8OmyHJurN+1RSKASEUGVDyUGUQwAhQdQVGXV1jHvFYRDuh+kblpdRUjRmAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T14:45:12.025865Z"},"content_sha256":"78ff7da25b4c28fee00b07704376d2947963b28d703fa7340fcfe9b3205ea219","schema_version":"1.0","event_id":"sha256:78ff7da25b4c28fee00b07704376d2947963b28d703fa7340fcfe9b3205ea219"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK/bundle.json","state_url":"https://pith.science/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK/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":"2026-06-06T14:45:12Z","links":{"resolver":"https://pith.science/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK","bundle":"https://pith.science/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK/bundle.json","state":"https://pith.science/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7QLJMWMJOSCYS7CZA4ERXSHTZK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7QLJMWMJOSCYS7CZA4ERXSHTZK","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":"71a7760173aa4032951b8b59aced6cd48400340c1c51db6b420a16220c7daf37","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-06-03T14:35:59Z","title_canon_sha256":"0762978b16a5873ee861c93bcdc8fcca384edb89bc6cfe422713730996380614"},"schema_version":"1.0","source":{"id":"2606.04947","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.04947","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"arxiv_version","alias_value":"2606.04947v1","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.04947","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"pith_short_12","alias_value":"7QLJMWMJOSCY","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"pith_short_16","alias_value":"7QLJMWMJOSCYS7CZ","created_at":"2026-06-04T01:09:57Z"},{"alias_kind":"pith_short_8","alias_value":"7QLJMWMJ","created_at":"2026-06-04T01:09:57Z"}],"graph_snapshots":[{"event_id":"sha256:78ff7da25b4c28fee00b07704376d2947963b28d703fa7340fcfe9b3205ea219","target":"graph","created_at":"2026-06-04T01:09:57Z","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/2606.04947/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Phase randomization is essential for the security of practical decoy-state quantum key distribution (QKD) systems. Commonly, implementations rely on laser sources which are either actively phase-randomized, or gain-switched. However, at high repetition rates these show correlations, which can ultimately compromise security and performance. We present a 1.25 GHz phase-randomized QKD source based on a super-luminescent light emitting diode (SLED) operating in the C-band as a compact and cost-effective alternative. The source generates $\\sim100$ ps optical pulses with $400$ ps pulse-to-pulse sepa","authors_text":"Alessandro Marcomini, Aur\\'elien Cavali\\'e, Boris Korzh, David Cabrerizo, Gianluca Boso, Lo\\\"ic Millet, Marcos Curty, Raphael Houlmann, Rob Thew, Shashank Kumar, Towsif Taher","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-06-03T14:35:59Z","title":"Phase-correlation-free quantum key distribution source operating at gigahertz rates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.04947","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":"sha256:1bad28b3b4df40dad731d6ed6d567ef222f93eb8695852700e09314f2ad55b49","target":"record","created_at":"2026-06-04T01:09:57Z","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":"71a7760173aa4032951b8b59aced6cd48400340c1c51db6b420a16220c7daf37","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-06-03T14:35:59Z","title_canon_sha256":"0762978b16a5873ee861c93bcdc8fcca384edb89bc6cfe422713730996380614"},"schema_version":"1.0","source":{"id":"2606.04947","kind":"arxiv","version":1}},"canonical_sha256":"fc169659897485897c5907091bc8f3cab35a3296b820e07b67580a674e4abd69","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc169659897485897c5907091bc8f3cab35a3296b820e07b67580a674e4abd69","first_computed_at":"2026-06-04T01:09:57.445913Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T01:09:57.445913Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l3jnbda6dHUms4VQFKQduq5go0IZcGtAsoQm9LUhRAC1sMkLztyTvt2dazlXAlO2hJNSEH+IIid5jrrws+wUCw==","signature_status":"signed_v1","signed_at":"2026-06-04T01:09:57.446532Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.04947","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1bad28b3b4df40dad731d6ed6d567ef222f93eb8695852700e09314f2ad55b49","sha256:78ff7da25b4c28fee00b07704376d2947963b28d703fa7340fcfe9b3205ea219"],"state_sha256":"76625b0b30073556bf58ac98724183865e4b13fbc6935581d89754728f88fd35"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fESHvhIGb7oXQRP5Tg88FdRjlKRSEhuzOJytn2QFHYI/2+m0/xZ44AnzDlSaXMia+KtGlz8MVoTIDo+/v5coDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T14:45:12.029235Z","bundle_sha256":"342eda11dfe6171c666b1d6a82e416194e129334426a5a9944c71e2c49676c37"}}