{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:UBTMOLZ37KQJ5XSINZZNBINZE5","short_pith_number":"pith:UBTMOLZ3","canonical_record":{"source":{"id":"2502.07536","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-11T13:21:33Z","cross_cats_sorted":["cs.ET"],"title_canon_sha256":"2441d3674c22f6a604083a335b8849132c4c9c3d709a0ee4bd9feba40bf50b80","abstract_canon_sha256":"27e94aff702c897b361ae89dbe05d60f50024de84f51f626d2f52560542d0333"},"schema_version":"1.0"},"canonical_sha256":"a066c72f3bfaa09ede486e72d0a1b92764b690b61349080659d52987bb1819d1","source":{"kind":"arxiv","id":"2502.07536","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.07536","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"arxiv_version","alias_value":"2502.07536v2","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.07536","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"pith_short_12","alias_value":"UBTMOLZ37KQJ","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"pith_short_16","alias_value":"UBTMOLZ37KQJ5XSI","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"pith_short_8","alias_value":"UBTMOLZ3","created_at":"2026-07-05T11:02:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:UBTMOLZ37KQJ5XSINZZNBINZE5","target":"record","payload":{"canonical_record":{"source":{"id":"2502.07536","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-11T13:21:33Z","cross_cats_sorted":["cs.ET"],"title_canon_sha256":"2441d3674c22f6a604083a335b8849132c4c9c3d709a0ee4bd9feba40bf50b80","abstract_canon_sha256":"27e94aff702c897b361ae89dbe05d60f50024de84f51f626d2f52560542d0333"},"schema_version":"1.0"},"canonical_sha256":"a066c72f3bfaa09ede486e72d0a1b92764b690b61349080659d52987bb1819d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:02:41.606950Z","signature_b64":"NzXP7gBtDkr8070fw5Ois0fNogtiQ1IbX4SYi2u8CoYnBeZzrNVjUs2RVjnzHd2l/HacMRjbOgpbWoXugIJ/BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a066c72f3bfaa09ede486e72d0a1b92764b690b61349080659d52987bb1819d1","last_reissued_at":"2026-07-05T11:02:41.606452Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:02:41.606452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.07536","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":"2026-07-05T11:02:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SmWdnG3tpk5Pu4k/+e3qivErtAlSHeeDHKk/xFyO78a3ScDPmfnIsH+M8K9kuyDit+vXga2QFmQyhrKlX0CFCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T04:33:49.566995Z"},"content_sha256":"aa18b25b8ce74420f9481222139c58289f4c30cde499fd9bb4eaf460970911ef","schema_version":"1.0","event_id":"sha256:aa18b25b8ce74420f9481222139c58289f4c30cde499fd9bb4eaf460970911ef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:UBTMOLZ37KQJ5XSINZZNBINZE5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Efficient Iterative Algorithm for Qubit Mapping via Layer-Weight Assignment and Search Space Reduction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.ET"],"primary_cat":"quant-ph","authors_text":"Dandan Li, Kang Xu, Xinjian Liu, Yukun Wang, Zeyang Li","submitted_at":"2025-02-11T13:21:33Z","abstract_excerpt":"Current quantum devices support interactions only between physically adjacent qubits, preventing quantum circuits from being directly executed on these devices. Therefore, SWAP gates are required to remap logical qubits to physical qubits, which in turn increases both quantum resource consumption and error rates. To minimize the insertion of additional SWAP gates, we propose HAIL, an efficient iterative qubit mapping algorithm. Leveraging the inherent parallelism in quantum circuits, a new layer-weight assignment method is integrated with subgraph isomorphism to derive an optimal initial qubit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.07536","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/2502.07536/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":"2026-07-05T11:02:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NW6sqLBs72FBvE1HWAaBlgOSMkGDgifBQwT+5clAVQLREB+onaQFY9EoxHTMcxQthWQa2rWNcnEgagb2fAQtDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T04:33:49.567564Z"},"content_sha256":"3f28604fa0a67521c297d134129c09db3a699a0ac3c7db14d8d2496b5c740982","schema_version":"1.0","event_id":"sha256:3f28604fa0a67521c297d134129c09db3a699a0ac3c7db14d8d2496b5c740982"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UBTMOLZ37KQJ5XSINZZNBINZE5/bundle.json","state_url":"https://pith.science/pith/UBTMOLZ37KQJ5XSINZZNBINZE5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UBTMOLZ37KQJ5XSINZZNBINZE5/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":"2026-08-09T04:33:49Z","links":{"resolver":"https://pith.science/pith/UBTMOLZ37KQJ5XSINZZNBINZE5","bundle":"https://pith.science/pith/UBTMOLZ37KQJ5XSINZZNBINZE5/bundle.json","state":"https://pith.science/pith/UBTMOLZ37KQJ5XSINZZNBINZE5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UBTMOLZ37KQJ5XSINZZNBINZE5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:UBTMOLZ37KQJ5XSINZZNBINZE5","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":"27e94aff702c897b361ae89dbe05d60f50024de84f51f626d2f52560542d0333","cross_cats_sorted":["cs.ET"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-11T13:21:33Z","title_canon_sha256":"2441d3674c22f6a604083a335b8849132c4c9c3d709a0ee4bd9feba40bf50b80"},"schema_version":"1.0","source":{"id":"2502.07536","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.07536","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"arxiv_version","alias_value":"2502.07536v2","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.07536","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"pith_short_12","alias_value":"UBTMOLZ37KQJ","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"pith_short_16","alias_value":"UBTMOLZ37KQJ5XSI","created_at":"2026-07-05T11:02:41Z"},{"alias_kind":"pith_short_8","alias_value":"UBTMOLZ3","created_at":"2026-07-05T11:02:41Z"}],"graph_snapshots":[{"event_id":"sha256:3f28604fa0a67521c297d134129c09db3a699a0ac3c7db14d8d2496b5c740982","target":"graph","created_at":"2026-07-05T11:02:41Z","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/2502.07536/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Current quantum devices support interactions only between physically adjacent qubits, preventing quantum circuits from being directly executed on these devices. Therefore, SWAP gates are required to remap logical qubits to physical qubits, which in turn increases both quantum resource consumption and error rates. To minimize the insertion of additional SWAP gates, we propose HAIL, an efficient iterative qubit mapping algorithm. Leveraging the inherent parallelism in quantum circuits, a new layer-weight assignment method is integrated with subgraph isomorphism to derive an optimal initial qubit","authors_text":"Dandan Li, Kang Xu, Xinjian Liu, Yukun Wang, Zeyang Li","cross_cats":["cs.ET"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-11T13:21:33Z","title":"An Efficient Iterative Algorithm for Qubit Mapping via Layer-Weight Assignment and Search Space Reduction"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.07536","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:aa18b25b8ce74420f9481222139c58289f4c30cde499fd9bb4eaf460970911ef","target":"record","created_at":"2026-07-05T11:02:41Z","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":"27e94aff702c897b361ae89dbe05d60f50024de84f51f626d2f52560542d0333","cross_cats_sorted":["cs.ET"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-02-11T13:21:33Z","title_canon_sha256":"2441d3674c22f6a604083a335b8849132c4c9c3d709a0ee4bd9feba40bf50b80"},"schema_version":"1.0","source":{"id":"2502.07536","kind":"arxiv","version":2}},"canonical_sha256":"a066c72f3bfaa09ede486e72d0a1b92764b690b61349080659d52987bb1819d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a066c72f3bfaa09ede486e72d0a1b92764b690b61349080659d52987bb1819d1","first_computed_at":"2026-07-05T11:02:41.606452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:02:41.606452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NzXP7gBtDkr8070fw5Ois0fNogtiQ1IbX4SYi2u8CoYnBeZzrNVjUs2RVjnzHd2l/HacMRjbOgpbWoXugIJ/BA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:02:41.606950Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.07536","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa18b25b8ce74420f9481222139c58289f4c30cde499fd9bb4eaf460970911ef","sha256:3f28604fa0a67521c297d134129c09db3a699a0ac3c7db14d8d2496b5c740982"],"state_sha256":"1a3011fa8b3df1139cb10c3c7f28e4cd644fdba358fc2939f33a9bbe0a94c6fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wZLtLr4kFjjevgPzW7/jHBxOpnSlk4a21ieP9K7PBG23H9Oe6/Mp4iUWt2AQ1k/Q+H5uclavBpd15Vkkn55uBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T04:33:49.572633Z","bundle_sha256":"553b8861c2f7e6ce53b05c603c85d21e52c3cb00ce2cc9f9639d63284b5b3b73"}}