{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JAWQARJ44QHMU6CZS4ZO7SCKZK","short_pith_number":"pith:JAWQARJ4","canonical_record":{"source":{"id":"1502.07649","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-26T17:54:42Z","cross_cats_sorted":[],"title_canon_sha256":"306699fc01cac52542f8b886724d3a9edd0fcd6dbf929b5e2a910bc8855aaafc","abstract_canon_sha256":"102f67295b0f50b899f289106f37367ffaf1f63b3f4bd59401923519ccabac16"},"schema_version":"1.0"},"canonical_sha256":"482d00453ce40eca78599732efc84aca9446b4e94dbc8ebd299a116eb18220f1","source":{"kind":"arxiv","id":"1502.07649","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07649","created_at":"2026-05-18T01:25:55Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07649v1","created_at":"2026-05-18T01:25:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07649","created_at":"2026-05-18T01:25:55Z"},{"alias_kind":"pith_short_12","alias_value":"JAWQARJ44QHM","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JAWQARJ44QHMU6CZ","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JAWQARJ4","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JAWQARJ44QHMU6CZS4ZO7SCKZK","target":"record","payload":{"canonical_record":{"source":{"id":"1502.07649","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-26T17:54:42Z","cross_cats_sorted":[],"title_canon_sha256":"306699fc01cac52542f8b886724d3a9edd0fcd6dbf929b5e2a910bc8855aaafc","abstract_canon_sha256":"102f67295b0f50b899f289106f37367ffaf1f63b3f4bd59401923519ccabac16"},"schema_version":"1.0"},"canonical_sha256":"482d00453ce40eca78599732efc84aca9446b4e94dbc8ebd299a116eb18220f1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:25:55.480203Z","signature_b64":"P9pYrS7NlSRo56zmMLAIybfWk5xXbOOnzO/gwuWs5CKbn45HJrwybMf1uAGeMnYc2EfLThYRouIv6tsZVwghCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"482d00453ce40eca78599732efc84aca9446b4e94dbc8ebd299a116eb18220f1","last_reissued_at":"2026-05-18T01:25:55.479489Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:25:55.479489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.07649","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":"2026-05-18T01:25:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iE3i8x1CvanHgTxxSCIMSBgodyZwex5nqiwqQ/UVMjTvGNpC3sFFWVAQSgS9aFDvWa9WwelWawiYWYW9xiIkBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:14:02.919875Z"},"content_sha256":"9de766532cf12835b6343c50727c9be30849375c90b019ffeaba58702daf8286","schema_version":"1.0","event_id":"sha256:9de766532cf12835b6343c50727c9be30849375c90b019ffeaba58702daf8286"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JAWQARJ44QHMU6CZS4ZO7SCKZK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tomography of photon-number resolving continuous-output detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Adriana E. Lita, Animesh Datta, Benjamin J. Metcalf, Ian A. Walmsley, Joshua Nunn, Peter C. Humphreys, Sae Woo Nam, Thomas Gerrits, Thomas Hiemstra, W. Steven Kolthammer","submitted_at":"2015-02-26T17:54:42Z","abstract_excerpt":"We report a comprehensive approach to analysing continuous-output photon detectors. We employ principal component analysis to maximise the information extracted, followed by a novel noise-tolerant parameterised approach to the tomography of PNRDs. We further propose a measure for rigorously quantifying a detector's photon-number-resolving capability. Our approach applies to all detectors with continuous-output signals. We illustrate our methods by applying them to experimental data obtained from a transition-edge sensor (TES) detector."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07649","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":"2026-05-18T01:25:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K2hFAYOyNVr/S+xuRwfCn9IPeXNTezmiNpTBXMz0lyWI2SGGBhTSWRkFZ99zYUcS6EM60AwvSJxDYPaQf7d0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T14:14:02.920218Z"},"content_sha256":"75decd6d041a4e07f28bb9b3452f8e60bb1ef56cc08227022e84422ff0380c17","schema_version":"1.0","event_id":"sha256:75decd6d041a4e07f28bb9b3452f8e60bb1ef56cc08227022e84422ff0380c17"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK/bundle.json","state_url":"https://pith.science/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK/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":"2026-05-27T14:14:02Z","links":{"resolver":"https://pith.science/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK","bundle":"https://pith.science/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK/bundle.json","state":"https://pith.science/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JAWQARJ44QHMU6CZS4ZO7SCKZK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JAWQARJ44QHMU6CZS4ZO7SCKZK","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":"102f67295b0f50b899f289106f37367ffaf1f63b3f4bd59401923519ccabac16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-26T17:54:42Z","title_canon_sha256":"306699fc01cac52542f8b886724d3a9edd0fcd6dbf929b5e2a910bc8855aaafc"},"schema_version":"1.0","source":{"id":"1502.07649","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07649","created_at":"2026-05-18T01:25:55Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07649v1","created_at":"2026-05-18T01:25:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07649","created_at":"2026-05-18T01:25:55Z"},{"alias_kind":"pith_short_12","alias_value":"JAWQARJ44QHM","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JAWQARJ44QHMU6CZ","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JAWQARJ4","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:75decd6d041a4e07f28bb9b3452f8e60bb1ef56cc08227022e84422ff0380c17","target":"graph","created_at":"2026-05-18T01:25:55Z","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 report a comprehensive approach to analysing continuous-output photon detectors. We employ principal component analysis to maximise the information extracted, followed by a novel noise-tolerant parameterised approach to the tomography of PNRDs. We further propose a measure for rigorously quantifying a detector's photon-number-resolving capability. Our approach applies to all detectors with continuous-output signals. We illustrate our methods by applying them to experimental data obtained from a transition-edge sensor (TES) detector.","authors_text":"Adriana E. Lita, Animesh Datta, Benjamin J. Metcalf, Ian A. Walmsley, Joshua Nunn, Peter C. Humphreys, Sae Woo Nam, Thomas Gerrits, Thomas Hiemstra, W. Steven Kolthammer","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-26T17:54:42Z","title":"Tomography of photon-number resolving continuous-output detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07649","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":"sha256:9de766532cf12835b6343c50727c9be30849375c90b019ffeaba58702daf8286","target":"record","created_at":"2026-05-18T01:25:55Z","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":"102f67295b0f50b899f289106f37367ffaf1f63b3f4bd59401923519ccabac16","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-02-26T17:54:42Z","title_canon_sha256":"306699fc01cac52542f8b886724d3a9edd0fcd6dbf929b5e2a910bc8855aaafc"},"schema_version":"1.0","source":{"id":"1502.07649","kind":"arxiv","version":1}},"canonical_sha256":"482d00453ce40eca78599732efc84aca9446b4e94dbc8ebd299a116eb18220f1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"482d00453ce40eca78599732efc84aca9446b4e94dbc8ebd299a116eb18220f1","first_computed_at":"2026-05-18T01:25:55.479489Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:25:55.479489Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P9pYrS7NlSRo56zmMLAIybfWk5xXbOOnzO/gwuWs5CKbn45HJrwybMf1uAGeMnYc2EfLThYRouIv6tsZVwghCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:25:55.480203Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.07649","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9de766532cf12835b6343c50727c9be30849375c90b019ffeaba58702daf8286","sha256:75decd6d041a4e07f28bb9b3452f8e60bb1ef56cc08227022e84422ff0380c17"],"state_sha256":"e09f4d6f0ba90689d22023095e4881e4def0c4e7585b274f87baf2d7f7b4cf04"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XMrKyYFs2/I9xweA1HmK0LfMvKEmsMGT+sGLDUadgct6AiP/IsTJ1c+ZHmNQjvgqHFjV196R1YPNtOgtOjNEAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T14:14:02.923172Z","bundle_sha256":"7e1a227c27a64876567947bb4f89820e814919f031b46d307a187255443d1c06"}}