{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XDW6QZWG7HL4CGHMYMH2363HVA","short_pith_number":"pith:XDW6QZWG","canonical_record":{"source":{"id":"1908.09519","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-26T08:24:15Z","cross_cats_sorted":[],"title_canon_sha256":"b50a4ee257a59a4662fdcd274041220f2e691faa6580c0ff8213eb88066b1685","abstract_canon_sha256":"85b790e44963239dd5642928147275b3ee9271f412334e40bdb25f1b2c6e7f25"},"schema_version":"1.0"},"canonical_sha256":"b8ede866c6f9d7c118ecc30fadfb67a835205225ef272447f94e8635c413fa87","source":{"kind":"arxiv","id":"1908.09519","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.09519","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"arxiv_version","alias_value":"1908.09519v2","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.09519","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"pith_short_12","alias_value":"XDW6QZWG7HL4","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"pith_short_16","alias_value":"XDW6QZWG7HL4CGHM","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"pith_short_8","alias_value":"XDW6QZWG","created_at":"2026-07-05T03:44:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XDW6QZWG7HL4CGHMYMH2363HVA","target":"record","payload":{"canonical_record":{"source":{"id":"1908.09519","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-26T08:24:15Z","cross_cats_sorted":[],"title_canon_sha256":"b50a4ee257a59a4662fdcd274041220f2e691faa6580c0ff8213eb88066b1685","abstract_canon_sha256":"85b790e44963239dd5642928147275b3ee9271f412334e40bdb25f1b2c6e7f25"},"schema_version":"1.0"},"canonical_sha256":"b8ede866c6f9d7c118ecc30fadfb67a835205225ef272447f94e8635c413fa87","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:44:49.058495Z","signature_b64":"KcHwVOhnXynOX4luHdC3vCwL0JFxx1LEdem0G7uJumFyi1vtlvPe3XCn3ZGc1YaxkC0UyLnTyRu0jG89wTegAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b8ede866c6f9d7c118ecc30fadfb67a835205225ef272447f94e8635c413fa87","last_reissued_at":"2026-07-05T03:44:49.058046Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:44:49.058046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.09519","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:44:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fQnvB0/Fbv+LMu/3pPQczHiR+AN5LqFsStmCggDTpV2SW3IM5JA1f2+nkZDjnfgOhZ/1elzpPWgEfUZMejtJDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T07:39:32.813671Z"},"content_sha256":"88a90e3f8a59f7e3f9fcd74d189aaf9e104419f8357a6c3ad5b3748589b92ff3","schema_version":"1.0","event_id":"sha256:88a90e3f8a59f7e3f9fcd74d189aaf9e104419f8357a6c3ad5b3748589b92ff3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XDW6QZWG7HL4CGHMYMH2363HVA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum computing for accelerating cross-correlations intensive applications in signal processing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Erik Franken, Kohr Holger, Valentina Caprara Vivoli, Yuchen Deng","submitted_at":"2019-08-26T08:24:15Z","abstract_excerpt":"Despite their importance as subfields of mathematics and engineering, signal and image processing have not received much attention in the field of quantum computation. Cross-correlations are instrumental to all the aforementioned fields. In this article we help fill this void by providing two quantum algorithms, one for computing and storing cross-correlations, and one for implementing the expectation maximization maximum likelihood algorithm. In addition we show that the quantum expectation maximization maximum likelihood algorithm has a quadratic speed-up compared to the classical analog."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.09519","kind":"arxiv","version":2},"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/1908.09519/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":"2026-07-05T03:44:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HXEd8y3+EA5OmQxqLU96jLUuyB0p2ZLn73XXiZL287yDVGbXN8t+T9v7aYCCIm0uUEtSB7H+WXpZOdNJ1Z17Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-22T07:39:32.814180Z"},"content_sha256":"6de37a01c59ebedfc629c0243308a83c881a830d3f4dcf55b77f6ca18d01e00f","schema_version":"1.0","event_id":"sha256:6de37a01c59ebedfc629c0243308a83c881a830d3f4dcf55b77f6ca18d01e00f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XDW6QZWG7HL4CGHMYMH2363HVA/bundle.json","state_url":"https://pith.science/pith/XDW6QZWG7HL4CGHMYMH2363HVA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XDW6QZWG7HL4CGHMYMH2363HVA/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":"2026-08-22T07:39:32Z","links":{"resolver":"https://pith.science/pith/XDW6QZWG7HL4CGHMYMH2363HVA","bundle":"https://pith.science/pith/XDW6QZWG7HL4CGHMYMH2363HVA/bundle.json","state":"https://pith.science/pith/XDW6QZWG7HL4CGHMYMH2363HVA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XDW6QZWG7HL4CGHMYMH2363HVA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XDW6QZWG7HL4CGHMYMH2363HVA","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":"85b790e44963239dd5642928147275b3ee9271f412334e40bdb25f1b2c6e7f25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-26T08:24:15Z","title_canon_sha256":"b50a4ee257a59a4662fdcd274041220f2e691faa6580c0ff8213eb88066b1685"},"schema_version":"1.0","source":{"id":"1908.09519","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.09519","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"arxiv_version","alias_value":"1908.09519v2","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.09519","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"pith_short_12","alias_value":"XDW6QZWG7HL4","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"pith_short_16","alias_value":"XDW6QZWG7HL4CGHM","created_at":"2026-07-05T03:44:49Z"},{"alias_kind":"pith_short_8","alias_value":"XDW6QZWG","created_at":"2026-07-05T03:44:49Z"}],"graph_snapshots":[{"event_id":"sha256:6de37a01c59ebedfc629c0243308a83c881a830d3f4dcf55b77f6ca18d01e00f","target":"graph","created_at":"2026-07-05T03:44:49Z","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/1908.09519/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Despite their importance as subfields of mathematics and engineering, signal and image processing have not received much attention in the field of quantum computation. Cross-correlations are instrumental to all the aforementioned fields. In this article we help fill this void by providing two quantum algorithms, one for computing and storing cross-correlations, and one for implementing the expectation maximization maximum likelihood algorithm. In addition we show that the quantum expectation maximization maximum likelihood algorithm has a quadratic speed-up compared to the classical analog.","authors_text":"Erik Franken, Kohr Holger, Valentina Caprara Vivoli, Yuchen Deng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-26T08:24:15Z","title":"Quantum computing for accelerating cross-correlations intensive applications in signal processing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.09519","kind":"arxiv","version":2},"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":"sha256:88a90e3f8a59f7e3f9fcd74d189aaf9e104419f8357a6c3ad5b3748589b92ff3","target":"record","created_at":"2026-07-05T03:44:49Z","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":"85b790e44963239dd5642928147275b3ee9271f412334e40bdb25f1b2c6e7f25","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-26T08:24:15Z","title_canon_sha256":"b50a4ee257a59a4662fdcd274041220f2e691faa6580c0ff8213eb88066b1685"},"schema_version":"1.0","source":{"id":"1908.09519","kind":"arxiv","version":2}},"canonical_sha256":"b8ede866c6f9d7c118ecc30fadfb67a835205225ef272447f94e8635c413fa87","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b8ede866c6f9d7c118ecc30fadfb67a835205225ef272447f94e8635c413fa87","first_computed_at":"2026-07-05T03:44:49.058046Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:44:49.058046Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KcHwVOhnXynOX4luHdC3vCwL0JFxx1LEdem0G7uJumFyi1vtlvPe3XCn3ZGc1YaxkC0UyLnTyRu0jG89wTegAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:44:49.058495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.09519","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:88a90e3f8a59f7e3f9fcd74d189aaf9e104419f8357a6c3ad5b3748589b92ff3","sha256:6de37a01c59ebedfc629c0243308a83c881a830d3f4dcf55b77f6ca18d01e00f"],"state_sha256":"e53ae18d98774d15c534b590142f7d2cc8c6c3df8a76572dd783fdb6b4431293"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8IwCUSEWsBX3sS8P75Gc8JZFT6SjolbjXtdC+UKUvZCCaAbwydJHHN0cHTPHUR7ts4RifKAF+P/XBR9Hg4tlAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-22T07:39:32.819868Z","bundle_sha256":"162d353075fde59dd3d4a9123af1240c2b9a7714ea2f24f596ab0d71c05d7f02"}}