{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:647M6WUIAZTJBROUKUGQZZ4PVK","short_pith_number":"pith:647M6WUI","canonical_record":{"source":{"id":"1808.01188","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-03T13:44:56Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"4fe47dce663297634eb4a097543638bb1e0506fa29ec09a709c2c7605a7e6f66","abstract_canon_sha256":"b5762e5e9e3a0408a407aad55f1435c21f1c032d40717a5c9ff7143b65894aa3"},"schema_version":"1.0"},"canonical_sha256":"f73ecf5a88066690c5d4550d0ce78faabaec6f23c68acb0e47eca8763fbc914d","source":{"kind":"arxiv","id":"1808.01188","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.01188","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"1808.01188v1","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.01188","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"647M6WUIAZTJ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"647M6WUIAZTJBROU","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"647M6WUI","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:647M6WUIAZTJBROUKUGQZZ4PVK","target":"record","payload":{"canonical_record":{"source":{"id":"1808.01188","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-03T13:44:56Z","cross_cats_sorted":["physics.ins-det"],"title_canon_sha256":"4fe47dce663297634eb4a097543638bb1e0506fa29ec09a709c2c7605a7e6f66","abstract_canon_sha256":"b5762e5e9e3a0408a407aad55f1435c21f1c032d40717a5c9ff7143b65894aa3"},"schema_version":"1.0"},"canonical_sha256":"f73ecf5a88066690c5d4550d0ce78faabaec6f23c68acb0e47eca8763fbc914d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:07:32.292980Z","signature_b64":"Or+HpNh03ZY7f1pbTm6gKDJiRM18FqAzsZVO2+36c9bcdGCI70ALJGRqsKSxuFBDrf1AGovTjP+dLn8hu7yRBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f73ecf5a88066690c5d4550d0ce78faabaec6f23c68acb0e47eca8763fbc914d","last_reissued_at":"2026-05-18T00:07:32.292442Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:07:32.292442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.01188","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":"2026-05-18T00:07:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GFSUDSqVzu0p06raBNDHDGgHm+tdBe++wRRUDIajZQjgNdfDd3BTtOm1HJ9d3wh5DTlxhx8L8tEeb93cx5zQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:45:36.831988Z"},"content_sha256":"cd18e69e6d99397e137c64822b87a911c9f94c02cf71efcada515ef483e1132f","schema_version":"1.0","event_id":"sha256:cd18e69e6d99397e137c64822b87a911c9f94c02cf71efcada515ef483e1132f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:647M6WUIAZTJBROUKUGQZZ4PVK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Intensity modulation as a preemptive measure against blinding of single-photon detectors based on self-differencing cancellation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"quant-ph","authors_text":"Alexander Koehler-Sidki, Andrew J. Shields, Andrew W. Sharpe, George L. Roberts, James F. Dynes, Marco Lucamarini, Zhiliang Yuan","submitted_at":"2018-08-03T13:44:56Z","abstract_excerpt":"Quantum key distribution is rising as an important cryptographic primitive for protecting the communication infrastructure in the digital era. However, its implementation security is often weakened by components whose behavior deviates from what is expected. Here, we analyse the response of a self-differencing avalanche photodiode, a key enabler for high speed quantum key distribution, to intense light shone from a continuous-wave laser. Under incorrect settings, the cancellation entailed by the self-differencing circuitry can make the detector insensitive to single photons. However, we experi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.01188","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":"2026-05-18T00:07:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rkLLUSg4VyKG+AgWGiKWVXt6MvP9uT7oGAO1AQqHnESre6DMUk/iTivIkEesa7fpm+b/7tRdHPAVSZIMo35jAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T16:45:36.832909Z"},"content_sha256":"09628c9806c6d2a660cc6a45b615d1d669135377b6dcfc5f1e33178688e506dc","schema_version":"1.0","event_id":"sha256:09628c9806c6d2a660cc6a45b615d1d669135377b6dcfc5f1e33178688e506dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/647M6WUIAZTJBROUKUGQZZ4PVK/bundle.json","state_url":"https://pith.science/pith/647M6WUIAZTJBROUKUGQZZ4PVK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/647M6WUIAZTJBROUKUGQZZ4PVK/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":"2026-06-06T16:45:36Z","links":{"resolver":"https://pith.science/pith/647M6WUIAZTJBROUKUGQZZ4PVK","bundle":"https://pith.science/pith/647M6WUIAZTJBROUKUGQZZ4PVK/bundle.json","state":"https://pith.science/pith/647M6WUIAZTJBROUKUGQZZ4PVK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/647M6WUIAZTJBROUKUGQZZ4PVK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:647M6WUIAZTJBROUKUGQZZ4PVK","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":"b5762e5e9e3a0408a407aad55f1435c21f1c032d40717a5c9ff7143b65894aa3","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-03T13:44:56Z","title_canon_sha256":"4fe47dce663297634eb4a097543638bb1e0506fa29ec09a709c2c7605a7e6f66"},"schema_version":"1.0","source":{"id":"1808.01188","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.01188","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"arxiv_version","alias_value":"1808.01188v1","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.01188","created_at":"2026-05-18T00:07:32Z"},{"alias_kind":"pith_short_12","alias_value":"647M6WUIAZTJ","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"647M6WUIAZTJBROU","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"647M6WUI","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:09628c9806c6d2a660cc6a45b615d1d669135377b6dcfc5f1e33178688e506dc","target":"graph","created_at":"2026-05-18T00:07:32Z","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":"Quantum key distribution is rising as an important cryptographic primitive for protecting the communication infrastructure in the digital era. However, its implementation security is often weakened by components whose behavior deviates from what is expected. Here, we analyse the response of a self-differencing avalanche photodiode, a key enabler for high speed quantum key distribution, to intense light shone from a continuous-wave laser. Under incorrect settings, the cancellation entailed by the self-differencing circuitry can make the detector insensitive to single photons. However, we experi","authors_text":"Alexander Koehler-Sidki, Andrew J. Shields, Andrew W. Sharpe, George L. Roberts, James F. Dynes, Marco Lucamarini, Zhiliang Yuan","cross_cats":["physics.ins-det"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-03T13:44:56Z","title":"Intensity modulation as a preemptive measure against blinding of single-photon detectors based on self-differencing cancellation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.01188","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:cd18e69e6d99397e137c64822b87a911c9f94c02cf71efcada515ef483e1132f","target":"record","created_at":"2026-05-18T00:07:32Z","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":"b5762e5e9e3a0408a407aad55f1435c21f1c032d40717a5c9ff7143b65894aa3","cross_cats_sorted":["physics.ins-det"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-08-03T13:44:56Z","title_canon_sha256":"4fe47dce663297634eb4a097543638bb1e0506fa29ec09a709c2c7605a7e6f66"},"schema_version":"1.0","source":{"id":"1808.01188","kind":"arxiv","version":1}},"canonical_sha256":"f73ecf5a88066690c5d4550d0ce78faabaec6f23c68acb0e47eca8763fbc914d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f73ecf5a88066690c5d4550d0ce78faabaec6f23c68acb0e47eca8763fbc914d","first_computed_at":"2026-05-18T00:07:32.292442Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:32.292442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Or+HpNh03ZY7f1pbTm6gKDJiRM18FqAzsZVO2+36c9bcdGCI70ALJGRqsKSxuFBDrf1AGovTjP+dLn8hu7yRBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:32.292980Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.01188","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cd18e69e6d99397e137c64822b87a911c9f94c02cf71efcada515ef483e1132f","sha256:09628c9806c6d2a660cc6a45b615d1d669135377b6dcfc5f1e33178688e506dc"],"state_sha256":"1d59dbd4dab1f2df9bad23d8f1729d0f37fd4e73e73f80768a07ba79ad7b7cf6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vYPo0AeLsCWVF4pCktaFpAUGR2v6jgasINu63866RNwG5mf2BGrwuWopSTqG1NBADOGdVgEXJe6Aq16P53GdBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T16:45:36.836497Z","bundle_sha256":"6500453fa832525fa336b26aa2d0f9642ea636efb55381ea5f7ad6296f5b18d1"}}