{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:7QNVEKI3R5Q37KBTV6ORJ2TX7Z","short_pith_number":"pith:7QNVEKI3","canonical_record":{"source":{"id":"2308.03540","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-08-07T12:38:37Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"cb1308d0839f99d579911cd1ac85e4928204fe3312c9aafc5b1cad9c6056b1a9","abstract_canon_sha256":"b5186002911cf0a549da724697a4eeb23fefcd08e9db1f2779322b8ac18b8839"},"schema_version":"1.0"},"canonical_sha256":"fc1b52291b8f61bfa833af9d14ea77fe47e7e7c93c0e433f48fc52b4c1c65b4e","source":{"kind":"arxiv","id":"2308.03540","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.03540","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"arxiv_version","alias_value":"2308.03540v3","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.03540","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"pith_short_12","alias_value":"7QNVEKI3R5Q3","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"pith_short_16","alias_value":"7QNVEKI3R5Q37KBT","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"pith_short_8","alias_value":"7QNVEKI3","created_at":"2026-07-05T06:59:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:7QNVEKI3R5Q37KBTV6ORJ2TX7Z","target":"record","payload":{"canonical_record":{"source":{"id":"2308.03540","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-08-07T12:38:37Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"cb1308d0839f99d579911cd1ac85e4928204fe3312c9aafc5b1cad9c6056b1a9","abstract_canon_sha256":"b5186002911cf0a549da724697a4eeb23fefcd08e9db1f2779322b8ac18b8839"},"schema_version":"1.0"},"canonical_sha256":"fc1b52291b8f61bfa833af9d14ea77fe47e7e7c93c0e433f48fc52b4c1c65b4e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:59:34.420565Z","signature_b64":"S/MgJvXtTFWvxxSlnwiYy3uPu9wdr0cP8ZO6zqAEKVRQ833rORJUWpj+OrZak4juJNsPX8pwD1Xw97P0DoShDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc1b52291b8f61bfa833af9d14ea77fe47e7e7c93c0e433f48fc52b4c1c65b4e","last_reissued_at":"2026-07-05T06:59:34.420075Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:59:34.420075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.03540","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":"2026-07-05T06:59:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JalZzv10y1t9LJdYAxJJPFS99jk+r5ZzgFutC2FKuyB+MMWWAtDMcG8mW6b2azZKLSHVrFhLGQWEnE8QfqL/Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:08:34.105372Z"},"content_sha256":"2b7ed8922f0f02ca0640ecc3b84e638c2a2d7d032096b105247a48f5df4f13cf","schema_version":"1.0","event_id":"sha256:2b7ed8922f0f02ca0640ecc3b84e638c2a2d7d032096b105247a48f5df4f13cf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:7QNVEKI3R5Q37KBTV6ORJ2TX7Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Testing of Hybrid Quantum-Classical K-Means for Nonlinear Noise Mitigation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP"],"primary_cat":"quant-ph","authors_text":"Alonso Viladomat Jasso, Ark Modi, Christian Deppe, Fred Fung, Janis Noetzel, Maximilian Schaedler, Roberto Ferrara","submitted_at":"2023-08-07T12:38:37Z","abstract_excerpt":"Nearest-neighbour clustering is a powerful set of heuristic algorithms that find natural application in the decoding of signals transmitted using the M-Quadrature Amplitude Modulation (M-QAM) protocol. Lloyd et al. proposed a quantum version of the algorithm that promised an exponential speed-up. We analyse the performance of this algorithm by simulating the use of a hybrid quantum-classical implementation of it upon 16-QAM and experimental 64-QAM data. We then benchmark the implementation against the classical k-means clustering algorithm. The choice of quantum encoding of the classical data "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.03540","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2308.03540/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":"2026-07-05T06:59:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZJSuRlzUR8xuMjntyLvJaUTXn++whFKPJMj0iamNhns91j0C93Lsa+BtJJd5cd985igJnbgaxzlkuA8MqAp0AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:08:34.105753Z"},"content_sha256":"b08216cb07e75cd6a797d59cca616b15dc1deff44e86f46046cd8c1ed8dbe68a","schema_version":"1.0","event_id":"sha256:b08216cb07e75cd6a797d59cca616b15dc1deff44e86f46046cd8c1ed8dbe68a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z/bundle.json","state_url":"https://pith.science/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z/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":"2026-07-22T01:08:34Z","links":{"resolver":"https://pith.science/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z","bundle":"https://pith.science/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z/bundle.json","state":"https://pith.science/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7QNVEKI3R5Q37KBTV6ORJ2TX7Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:7QNVEKI3R5Q37KBTV6ORJ2TX7Z","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":"b5186002911cf0a549da724697a4eeb23fefcd08e9db1f2779322b8ac18b8839","cross_cats_sorted":["eess.SP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-08-07T12:38:37Z","title_canon_sha256":"cb1308d0839f99d579911cd1ac85e4928204fe3312c9aafc5b1cad9c6056b1a9"},"schema_version":"1.0","source":{"id":"2308.03540","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.03540","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"arxiv_version","alias_value":"2308.03540v3","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.03540","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"pith_short_12","alias_value":"7QNVEKI3R5Q3","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"pith_short_16","alias_value":"7QNVEKI3R5Q37KBT","created_at":"2026-07-05T06:59:34Z"},{"alias_kind":"pith_short_8","alias_value":"7QNVEKI3","created_at":"2026-07-05T06:59:34Z"}],"graph_snapshots":[{"event_id":"sha256:b08216cb07e75cd6a797d59cca616b15dc1deff44e86f46046cd8c1ed8dbe68a","target":"graph","created_at":"2026-07-05T06:59:34Z","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/2308.03540/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Nearest-neighbour clustering is a powerful set of heuristic algorithms that find natural application in the decoding of signals transmitted using the M-Quadrature Amplitude Modulation (M-QAM) protocol. Lloyd et al. proposed a quantum version of the algorithm that promised an exponential speed-up. We analyse the performance of this algorithm by simulating the use of a hybrid quantum-classical implementation of it upon 16-QAM and experimental 64-QAM data. We then benchmark the implementation against the classical k-means clustering algorithm. The choice of quantum encoding of the classical data ","authors_text":"Alonso Viladomat Jasso, Ark Modi, Christian Deppe, Fred Fung, Janis Noetzel, Maximilian Schaedler, Roberto Ferrara","cross_cats":["eess.SP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-08-07T12:38:37Z","title":"Testing of Hybrid Quantum-Classical K-Means for Nonlinear Noise Mitigation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.03540","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":"sha256:2b7ed8922f0f02ca0640ecc3b84e638c2a2d7d032096b105247a48f5df4f13cf","target":"record","created_at":"2026-07-05T06:59:34Z","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":"b5186002911cf0a549da724697a4eeb23fefcd08e9db1f2779322b8ac18b8839","cross_cats_sorted":["eess.SP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2023-08-07T12:38:37Z","title_canon_sha256":"cb1308d0839f99d579911cd1ac85e4928204fe3312c9aafc5b1cad9c6056b1a9"},"schema_version":"1.0","source":{"id":"2308.03540","kind":"arxiv","version":3}},"canonical_sha256":"fc1b52291b8f61bfa833af9d14ea77fe47e7e7c93c0e433f48fc52b4c1c65b4e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc1b52291b8f61bfa833af9d14ea77fe47e7e7c93c0e433f48fc52b4c1c65b4e","first_computed_at":"2026-07-05T06:59:34.420075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:59:34.420075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S/MgJvXtTFWvxxSlnwiYy3uPu9wdr0cP8ZO6zqAEKVRQ833rORJUWpj+OrZak4juJNsPX8pwD1Xw97P0DoShDg==","signature_status":"signed_v1","signed_at":"2026-07-05T06:59:34.420565Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.03540","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b7ed8922f0f02ca0640ecc3b84e638c2a2d7d032096b105247a48f5df4f13cf","sha256:b08216cb07e75cd6a797d59cca616b15dc1deff44e86f46046cd8c1ed8dbe68a"],"state_sha256":"b5a8fbe38feed04fe24acc1c1351b33efab268a5ff89ec53e9e53bdae61a05b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r8miJ/rVM9yC2zSxQGF8LcMfvCn2J8pfoathBarVTzzP4WWoDXiB66A1XPu3fmSNCYh0huMvDlz/9gVXOnwAAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T01:08:34.108340Z","bundle_sha256":"ef080ce2a5f37827c306530356dff51b0e8bdd7139575ebffd38413517d25a22"}}