{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:CI5IRT5YVJUCGP6NNCVYDLECAV","short_pith_number":"pith:CI5IRT5Y","canonical_record":{"source":{"id":"2201.00445","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-03T01:12:44Z","cross_cats_sorted":[],"title_canon_sha256":"9557bffa067b80c14d918f75b1fc0e39de6bce4a2face51a361650ff7cb3b2ff","abstract_canon_sha256":"c254cf1acabad52e909a25f60f66cd9e99bcd54a99bd195aa917217206f287ea"},"schema_version":"1.0"},"canonical_sha256":"123a88cfb8aa68233fcd68ab81ac820545f0b2534b9d17ed1b8df755a33e40c7","source":{"kind":"arxiv","id":"2201.00445","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.00445","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"arxiv_version","alias_value":"2201.00445v2","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.00445","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"pith_short_12","alias_value":"CI5IRT5YVJUC","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"CI5IRT5YVJUCGP6N","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"CI5IRT5Y","created_at":"2026-07-05T05:31:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:CI5IRT5YVJUCGP6NNCVYDLECAV","target":"record","payload":{"canonical_record":{"source":{"id":"2201.00445","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-03T01:12:44Z","cross_cats_sorted":[],"title_canon_sha256":"9557bffa067b80c14d918f75b1fc0e39de6bce4a2face51a361650ff7cb3b2ff","abstract_canon_sha256":"c254cf1acabad52e909a25f60f66cd9e99bcd54a99bd195aa917217206f287ea"},"schema_version":"1.0"},"canonical_sha256":"123a88cfb8aa68233fcd68ab81ac820545f0b2534b9d17ed1b8df755a33e40c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:31:34.538031Z","signature_b64":"hkxHPAXvrf7mhPOb9QkL3nLzyTLkE4EeE1qBwPktRe1tLqRsMkRCJLnueAy6PyOrXo6ntF2eTu2QGt1E+L9VAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"123a88cfb8aa68233fcd68ab81ac820545f0b2534b9d17ed1b8df755a33e40c7","last_reissued_at":"2026-07-05T05:31:34.537544Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:31:34.537544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2201.00445","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":"2026-07-05T05:31:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9rX152EM4+U1wxayZfHLHHyuHoYE24T9YVuMC6R+ymqAVtZbXoA+KHduB6/DB/+zOnUyQZ+VElKyHu89UxTKAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T19:36:04.550908Z"},"content_sha256":"6086fd932e4bd594dd40d318cf953d05b7f1de5de7301610c3e68feb13b63fc8","schema_version":"1.0","event_id":"sha256:6086fd932e4bd594dd40d318cf953d05b7f1de5de7301610c3e68feb13b63fc8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:CI5IRT5YVJUCGP6NNCVYDLECAV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Qubit assignment using time reversal","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Andy C. Y. Li, Evan Peters, Gabriel Perdue, Prasanth Shyamsundar","submitted_at":"2022-01-03T01:12:44Z","abstract_excerpt":"As the number of qubits available on noisy quantum computers grows, it will become necessary to efficiently select a subset of physical qubits to use in a quantum computation. For any given quantum program and device there are many ways to assign physical qubits for execution of the program, and assignments will differ in performance due to the variability in quality across qubits and entangling operations on a single device. Evaluating the performance of each assignment using fidelity estimation introduces significant experimental overhead and will be infeasible for many applications, while r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.00445","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/2201.00445/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":"2026-07-05T05:31:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+gudSxDxkgLXRX03rhU4iGCmAinzlkXiOqHmSunhn4pVaSnbvtz6gKayz8MBxVOmhdh4zYtirWcXrrHLH+63Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T19:36:04.551405Z"},"content_sha256":"b262d169e1b74fbf507d4982dc5e7574462bc65d0c70efa91b3e47423fbc5c9b","schema_version":"1.0","event_id":"sha256:b262d169e1b74fbf507d4982dc5e7574462bc65d0c70efa91b3e47423fbc5c9b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CI5IRT5YVJUCGP6NNCVYDLECAV/bundle.json","state_url":"https://pith.science/pith/CI5IRT5YVJUCGP6NNCVYDLECAV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CI5IRT5YVJUCGP6NNCVYDLECAV/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":"2026-08-16T19:36:04Z","links":{"resolver":"https://pith.science/pith/CI5IRT5YVJUCGP6NNCVYDLECAV","bundle":"https://pith.science/pith/CI5IRT5YVJUCGP6NNCVYDLECAV/bundle.json","state":"https://pith.science/pith/CI5IRT5YVJUCGP6NNCVYDLECAV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CI5IRT5YVJUCGP6NNCVYDLECAV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:CI5IRT5YVJUCGP6NNCVYDLECAV","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":"c254cf1acabad52e909a25f60f66cd9e99bcd54a99bd195aa917217206f287ea","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-03T01:12:44Z","title_canon_sha256":"9557bffa067b80c14d918f75b1fc0e39de6bce4a2face51a361650ff7cb3b2ff"},"schema_version":"1.0","source":{"id":"2201.00445","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2201.00445","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"arxiv_version","alias_value":"2201.00445v2","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2201.00445","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"pith_short_12","alias_value":"CI5IRT5YVJUC","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"CI5IRT5YVJUCGP6N","created_at":"2026-07-05T05:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"CI5IRT5Y","created_at":"2026-07-05T05:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:b262d169e1b74fbf507d4982dc5e7574462bc65d0c70efa91b3e47423fbc5c9b","target":"graph","created_at":"2026-07-05T05:31:34Z","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/2201.00445/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"As the number of qubits available on noisy quantum computers grows, it will become necessary to efficiently select a subset of physical qubits to use in a quantum computation. For any given quantum program and device there are many ways to assign physical qubits for execution of the program, and assignments will differ in performance due to the variability in quality across qubits and entangling operations on a single device. Evaluating the performance of each assignment using fidelity estimation introduces significant experimental overhead and will be infeasible for many applications, while r","authors_text":"Andy C. Y. Li, Evan Peters, Gabriel Perdue, Prasanth Shyamsundar","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-03T01:12:44Z","title":"Qubit assignment using time reversal"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2201.00445","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":"sha256:6086fd932e4bd594dd40d318cf953d05b7f1de5de7301610c3e68feb13b63fc8","target":"record","created_at":"2026-07-05T05:31:34Z","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":"c254cf1acabad52e909a25f60f66cd9e99bcd54a99bd195aa917217206f287ea","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-01-03T01:12:44Z","title_canon_sha256":"9557bffa067b80c14d918f75b1fc0e39de6bce4a2face51a361650ff7cb3b2ff"},"schema_version":"1.0","source":{"id":"2201.00445","kind":"arxiv","version":2}},"canonical_sha256":"123a88cfb8aa68233fcd68ab81ac820545f0b2534b9d17ed1b8df755a33e40c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"123a88cfb8aa68233fcd68ab81ac820545f0b2534b9d17ed1b8df755a33e40c7","first_computed_at":"2026-07-05T05:31:34.537544Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:31:34.537544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hkxHPAXvrf7mhPOb9QkL3nLzyTLkE4EeE1qBwPktRe1tLqRsMkRCJLnueAy6PyOrXo6ntF2eTu2QGt1E+L9VAw==","signature_status":"signed_v1","signed_at":"2026-07-05T05:31:34.538031Z","signed_message":"canonical_sha256_bytes"},"source_id":"2201.00445","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6086fd932e4bd594dd40d318cf953d05b7f1de5de7301610c3e68feb13b63fc8","sha256:b262d169e1b74fbf507d4982dc5e7574462bc65d0c70efa91b3e47423fbc5c9b"],"state_sha256":"43368d54153211585491a1d837bd365b6ac8499071068ddfff4453cabdab8af9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e3SM758ieVh8eObju490rGVh4kO6m1Ar3pG8p44GkQxQwzPlDA0jEirBtobBLQwiNrCllEvgauV+EwCw4rabCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T19:36:04.557045Z","bundle_sha256":"9a5bc4f0778998a72dd701a4b55c04513d3344d21fc7b77df95eb6ec75db949d"}}