{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:LFD7P2I3VFXRCQGUXUY2WL3Z6C","short_pith_number":"pith:LFD7P2I3","canonical_record":{"source":{"id":"2002.10822","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2020-02-25T12:32:07Z","cross_cats_sorted":[],"title_canon_sha256":"435e6b92bf9b7d34fd650d7ac3bafc161daec605ee42440109714c4608050880","abstract_canon_sha256":"8bd5e73399ccef6f441ff6729189cf0cbe62896fd5bdc89ac84e24e34e613d10"},"schema_version":"1.0"},"canonical_sha256":"5947f7e91ba96f1140d4bd31ab2f79f0a7a56c704918fd1ea43a87a4cbf43f4d","source":{"kind":"arxiv","id":"2002.10822","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.10822","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"arxiv_version","alias_value":"2002.10822v2","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.10822","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"pith_short_12","alias_value":"LFD7P2I3VFXR","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"pith_short_16","alias_value":"LFD7P2I3VFXRCQGU","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"pith_short_8","alias_value":"LFD7P2I3","created_at":"2026-07-05T01:08:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:LFD7P2I3VFXRCQGUXUY2WL3Z6C","target":"record","payload":{"canonical_record":{"source":{"id":"2002.10822","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2020-02-25T12:32:07Z","cross_cats_sorted":[],"title_canon_sha256":"435e6b92bf9b7d34fd650d7ac3bafc161daec605ee42440109714c4608050880","abstract_canon_sha256":"8bd5e73399ccef6f441ff6729189cf0cbe62896fd5bdc89ac84e24e34e613d10"},"schema_version":"1.0"},"canonical_sha256":"5947f7e91ba96f1140d4bd31ab2f79f0a7a56c704918fd1ea43a87a4cbf43f4d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:08:28.118710Z","signature_b64":"KzxqYa28ipVZLQ22vWFTvrtVNpVIvwHyGkbrJkHliYnvcXCnEJnMc8nMk7XTCYaor+ID+iSBaJyprlFv41DTCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5947f7e91ba96f1140d4bd31ab2f79f0a7a56c704918fd1ea43a87a4cbf43f4d","last_reissued_at":"2026-07-05T01:08:28.118176Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:08:28.118176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.10822","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":"2026-07-05T01:08:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X6v6CWdEBKPFcp/0eMgeYyK8fP3VN2BZVJJ609Fdf+NtgiF2YWc984QkW25s+qwf87HdqVKnv61EpH1H0AajCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T22:53:12.545354Z"},"content_sha256":"71344f7fe2538ea195d2345ba0699544aaa79cf162ce4aad22e944d0f8b89a03","schema_version":"1.0","event_id":"sha256:71344f7fe2538ea195d2345ba0699544aaa79cf162ce4aad22e944d0f8b89a03"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:LFD7P2I3VFXRCQGUXUY2WL3Z6C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Operational definition of a quantum speed limit","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Bo Liu, Haidong Yuan, Jing Liu, Mao Zhang, Yanyan Shao","submitted_at":"2020-02-25T12:32:07Z","abstract_excerpt":"The quantum speed limit is a fundamental concept in quantum mechanics, which aims at finding the minimum time scale or the maximum dynamical speed for some fixed targets. In a large number of studies in this field, the construction of valid bounds for the evolution time is always the core mission, yet the physics behind it and some fundamental questions like which states can really fulfill the target, are ignored. Understanding the physics behind the bounds is at least as important as constructing attainable bounds. Here we provide an operational approach for the definition of the quantum spee"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.10822","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/2002.10822/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":"2026-07-05T01:08:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TMZpBwpzJkYIlBlG+2Rbk2kaqIp/wnQW1sVlFdjCUCE3n/+WISL3kG4qjOf1IN4MEHrPFXLWNQl0xOCBmr4vBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-15T22:53:12.545730Z"},"content_sha256":"8c53655bb81e850a95580543df4173b75a4149651e4fecab6633caa4299eb9c4","schema_version":"1.0","event_id":"sha256:8c53655bb81e850a95580543df4173b75a4149651e4fecab6633caa4299eb9c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C/bundle.json","state_url":"https://pith.science/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C/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":"2026-07-15T22:53:12Z","links":{"resolver":"https://pith.science/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C","bundle":"https://pith.science/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C/bundle.json","state":"https://pith.science/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LFD7P2I3VFXRCQGUXUY2WL3Z6C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:LFD7P2I3VFXRCQGUXUY2WL3Z6C","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":"8bd5e73399ccef6f441ff6729189cf0cbe62896fd5bdc89ac84e24e34e613d10","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2020-02-25T12:32:07Z","title_canon_sha256":"435e6b92bf9b7d34fd650d7ac3bafc161daec605ee42440109714c4608050880"},"schema_version":"1.0","source":{"id":"2002.10822","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.10822","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"arxiv_version","alias_value":"2002.10822v2","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.10822","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"pith_short_12","alias_value":"LFD7P2I3VFXR","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"pith_short_16","alias_value":"LFD7P2I3VFXRCQGU","created_at":"2026-07-05T01:08:28Z"},{"alias_kind":"pith_short_8","alias_value":"LFD7P2I3","created_at":"2026-07-05T01:08:28Z"}],"graph_snapshots":[{"event_id":"sha256:8c53655bb81e850a95580543df4173b75a4149651e4fecab6633caa4299eb9c4","target":"graph","created_at":"2026-07-05T01:08:28Z","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/2002.10822/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The quantum speed limit is a fundamental concept in quantum mechanics, which aims at finding the minimum time scale or the maximum dynamical speed for some fixed targets. In a large number of studies in this field, the construction of valid bounds for the evolution time is always the core mission, yet the physics behind it and some fundamental questions like which states can really fulfill the target, are ignored. Understanding the physics behind the bounds is at least as important as constructing attainable bounds. Here we provide an operational approach for the definition of the quantum spee","authors_text":"Bo Liu, Haidong Yuan, Jing Liu, Mao Zhang, Yanyan Shao","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2020-02-25T12:32:07Z","title":"Operational definition of a quantum speed limit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.10822","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":"sha256:71344f7fe2538ea195d2345ba0699544aaa79cf162ce4aad22e944d0f8b89a03","target":"record","created_at":"2026-07-05T01:08:28Z","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":"8bd5e73399ccef6f441ff6729189cf0cbe62896fd5bdc89ac84e24e34e613d10","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"quant-ph","submitted_at":"2020-02-25T12:32:07Z","title_canon_sha256":"435e6b92bf9b7d34fd650d7ac3bafc161daec605ee42440109714c4608050880"},"schema_version":"1.0","source":{"id":"2002.10822","kind":"arxiv","version":2}},"canonical_sha256":"5947f7e91ba96f1140d4bd31ab2f79f0a7a56c704918fd1ea43a87a4cbf43f4d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5947f7e91ba96f1140d4bd31ab2f79f0a7a56c704918fd1ea43a87a4cbf43f4d","first_computed_at":"2026-07-05T01:08:28.118176Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:08:28.118176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KzxqYa28ipVZLQ22vWFTvrtVNpVIvwHyGkbrJkHliYnvcXCnEJnMc8nMk7XTCYaor+ID+iSBaJyprlFv41DTCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:08:28.118710Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.10822","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71344f7fe2538ea195d2345ba0699544aaa79cf162ce4aad22e944d0f8b89a03","sha256:8c53655bb81e850a95580543df4173b75a4149651e4fecab6633caa4299eb9c4"],"state_sha256":"7744ab480c91844d587262014e15053225628e44ede932abb44192b63ab7c6c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q63RmiGnjixt/ITwqW0c7RYsEcNCzZmstE08sp2XB+jWRKe+1VGylyhgBdn8ufQ7g7iJLEM8mRdXMGc1tpEiAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-15T22:53:12.548220Z","bundle_sha256":"ea247d4dc35a14325200c660542b23dd1aa5c66b11ea4e7e56988afad2cff6be"}}