{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:W4LTFSGBASTUKIUQMZ36NLU46M","short_pith_number":"pith:W4LTFSGB","canonical_record":{"source":{"id":"1109.4981","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-23T00:46:04Z","cross_cats_sorted":[],"title_canon_sha256":"8f9879e8d5e3b51fc1f25edce45ab66ea94c5d3c4b5ff3b1f26d7f65f12d64f4","abstract_canon_sha256":"b39fd5ced49274c2049beceb3cc578cd308f95ec79490c09f7a52a4e09c96722"},"schema_version":"1.0"},"canonical_sha256":"b71732c8c104a74522906677e6ae9cf327f6e29b744ee528eac2aa59298926d9","source":{"kind":"arxiv","id":"1109.4981","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.4981","created_at":"2026-05-18T03:58:24Z"},{"alias_kind":"arxiv_version","alias_value":"1109.4981v3","created_at":"2026-05-18T03:58:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.4981","created_at":"2026-05-18T03:58:24Z"},{"alias_kind":"pith_short_12","alias_value":"W4LTFSGBASTU","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W4LTFSGBASTUKIUQ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W4LTFSGB","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:W4LTFSGBASTUKIUQMZ36NLU46M","target":"record","payload":{"canonical_record":{"source":{"id":"1109.4981","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-23T00:46:04Z","cross_cats_sorted":[],"title_canon_sha256":"8f9879e8d5e3b51fc1f25edce45ab66ea94c5d3c4b5ff3b1f26d7f65f12d64f4","abstract_canon_sha256":"b39fd5ced49274c2049beceb3cc578cd308f95ec79490c09f7a52a4e09c96722"},"schema_version":"1.0"},"canonical_sha256":"b71732c8c104a74522906677e6ae9cf327f6e29b744ee528eac2aa59298926d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:58:24.575284Z","signature_b64":"ienukI6FH0Tg8GI+UBObmCHN1dQCUAoSG+ka9aDPrut/2WR0H8geJqcVfUcfN+zkXA9NvsFxvFXVIVUEM57iDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b71732c8c104a74522906677e6ae9cf327f6e29b744ee528eac2aa59298926d9","last_reissued_at":"2026-05-18T03:58:24.574670Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:58:24.574670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1109.4981","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:58:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NuuB1myQh8UEoUBmglQOQlb/Yg9/j6cgNTpUDRpp5qmXtcEEEtWlr87SpM0ryx76Rc1KjGL9HesADK0Oye98Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T14:53:48.853382Z"},"content_sha256":"85f4949a8d6792b754bd3388c1c9f9076fea8300321a78abd498419b0a28e5ad","schema_version":"1.0","event_id":"sha256:85f4949a8d6792b754bd3388c1c9f9076fea8300321a78abd498419b0a28e5ad"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:W4LTFSGBASTUKIUQMZ36NLU46M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Novel, Robust Quantum Detection Scheme","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Boerge Hemmerling, Florian Gebert, Piet O. Schmidt, Yong Wan","submitted_at":"2011-09-23T00:46:04Z","abstract_excerpt":"Protocols used in quantum information and precision spectroscopy rely on efficient internal quantum state discrimination. With a single ion in a linear Paul trap, we implement a novel detection method which utilizes correlations between two detection events with an intermediate spin-flip. The technique is experimentally characterized as more robust against fluctuations in detection laser power compared to conventionally implemented methods. Furthermore, systematic detection errors which limit the Rabi oscillation contrast in conventional methods are overcome."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.4981","kind":"arxiv","version":3},"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":"2026-05-18T03:58:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P/pPeAH5ReaBEI6IyFEsl3aMmC8j0D++7b8DdQHL+T7r5B1POewih4yDDsmrZ4QxeG8MeGWDBiFsp6QN5wktDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-21T14:53:48.853729Z"},"content_sha256":"8efa8811e5b263c2467b1a12abc3d15eba7bdba9d2efe5ce5ae3a05eb9721fe5","schema_version":"1.0","event_id":"sha256:8efa8811e5b263c2467b1a12abc3d15eba7bdba9d2efe5ce5ae3a05eb9721fe5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W4LTFSGBASTUKIUQMZ36NLU46M/bundle.json","state_url":"https://pith.science/pith/W4LTFSGBASTUKIUQMZ36NLU46M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W4LTFSGBASTUKIUQMZ36NLU46M/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":"2026-06-21T14:53:48Z","links":{"resolver":"https://pith.science/pith/W4LTFSGBASTUKIUQMZ36NLU46M","bundle":"https://pith.science/pith/W4LTFSGBASTUKIUQMZ36NLU46M/bundle.json","state":"https://pith.science/pith/W4LTFSGBASTUKIUQMZ36NLU46M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W4LTFSGBASTUKIUQMZ36NLU46M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:W4LTFSGBASTUKIUQMZ36NLU46M","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":"b39fd5ced49274c2049beceb3cc578cd308f95ec79490c09f7a52a4e09c96722","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-23T00:46:04Z","title_canon_sha256":"8f9879e8d5e3b51fc1f25edce45ab66ea94c5d3c4b5ff3b1f26d7f65f12d64f4"},"schema_version":"1.0","source":{"id":"1109.4981","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1109.4981","created_at":"2026-05-18T03:58:24Z"},{"alias_kind":"arxiv_version","alias_value":"1109.4981v3","created_at":"2026-05-18T03:58:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1109.4981","created_at":"2026-05-18T03:58:24Z"},{"alias_kind":"pith_short_12","alias_value":"W4LTFSGBASTU","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"W4LTFSGBASTUKIUQ","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"W4LTFSGB","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:8efa8811e5b263c2467b1a12abc3d15eba7bdba9d2efe5ce5ae3a05eb9721fe5","target":"graph","created_at":"2026-05-18T03:58:24Z","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":"Protocols used in quantum information and precision spectroscopy rely on efficient internal quantum state discrimination. With a single ion in a linear Paul trap, we implement a novel detection method which utilizes correlations between two detection events with an intermediate spin-flip. The technique is experimentally characterized as more robust against fluctuations in detection laser power compared to conventionally implemented methods. Furthermore, systematic detection errors which limit the Rabi oscillation contrast in conventional methods are overcome.","authors_text":"Boerge Hemmerling, Florian Gebert, Piet O. Schmidt, Yong Wan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-23T00:46:04Z","title":"A Novel, Robust Quantum Detection Scheme"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1109.4981","kind":"arxiv","version":3},"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":"sha256:85f4949a8d6792b754bd3388c1c9f9076fea8300321a78abd498419b0a28e5ad","target":"record","created_at":"2026-05-18T03:58:24Z","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":"b39fd5ced49274c2049beceb3cc578cd308f95ec79490c09f7a52a4e09c96722","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-09-23T00:46:04Z","title_canon_sha256":"8f9879e8d5e3b51fc1f25edce45ab66ea94c5d3c4b5ff3b1f26d7f65f12d64f4"},"schema_version":"1.0","source":{"id":"1109.4981","kind":"arxiv","version":3}},"canonical_sha256":"b71732c8c104a74522906677e6ae9cf327f6e29b744ee528eac2aa59298926d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b71732c8c104a74522906677e6ae9cf327f6e29b744ee528eac2aa59298926d9","first_computed_at":"2026-05-18T03:58:24.574670Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:58:24.574670Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ienukI6FH0Tg8GI+UBObmCHN1dQCUAoSG+ka9aDPrut/2WR0H8geJqcVfUcfN+zkXA9NvsFxvFXVIVUEM57iDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:58:24.575284Z","signed_message":"canonical_sha256_bytes"},"source_id":"1109.4981","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85f4949a8d6792b754bd3388c1c9f9076fea8300321a78abd498419b0a28e5ad","sha256:8efa8811e5b263c2467b1a12abc3d15eba7bdba9d2efe5ce5ae3a05eb9721fe5"],"state_sha256":"7389903f72b6a9f5ac9bf376e593def3075c1d9894fdb3afe1d806da160b7f1c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PEiA4Qi55hKCXFWAf4V3l0ti6hVzecKt+V1Wsr/8lkn83QXW703wTnadVLi6b/w40d73fVxUDfBj0U81OqIXAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-21T14:53:48.855652Z","bundle_sha256":"17154f03ad19c9a7038b3cbbf7406dc2d8a6ac5507a39afd67ce8d66e552ed04"}}