{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:KASQMUYOELMTUSX3EJ5P4YKO4G","short_pith_number":"pith:KASQMUYO","canonical_record":{"source":{"id":"2607.28783","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T19:12:55Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"2c4e6fc75430933cb32b00c2f1c072c5dc8eccbe6418753c0e37723b7102ac96","abstract_canon_sha256":"227e6fde216bf1c9ff37dc4c3485ba9af9626449e15e99ec55aebd342646d538"},"schema_version":"1.0"},"canonical_sha256":"502506530e22d93a4afb227afe614ee1b0f2278f85f9c3cb6f38fac9199e8e19","source":{"kind":"arxiv","id":"2607.28783","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.28783","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"arxiv_version","alias_value":"2607.28783v1","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.28783","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"pith_short_12","alias_value":"KASQMUYOELMT","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"pith_short_16","alias_value":"KASQMUYOELMTUSX3","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"pith_short_8","alias_value":"KASQMUYO","created_at":"2026-08-03T00:12:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:KASQMUYOELMTUSX3EJ5P4YKO4G","target":"record","payload":{"canonical_record":{"source":{"id":"2607.28783","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T19:12:55Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"2c4e6fc75430933cb32b00c2f1c072c5dc8eccbe6418753c0e37723b7102ac96","abstract_canon_sha256":"227e6fde216bf1c9ff37dc4c3485ba9af9626449e15e99ec55aebd342646d538"},"schema_version":"1.0"},"canonical_sha256":"502506530e22d93a4afb227afe614ee1b0f2278f85f9c3cb6f38fac9199e8e19","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-03T00:12:52.356296Z","signature_b64":"K7rGE+6ZJDkTHid3S85WhqYK4iSG8nX+/ku9Xog63KkDp6u/SlxkVfjVqxSLU6Pkhhfm83nea0Nge/esw484Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"502506530e22d93a4afb227afe614ee1b0f2278f85f9c3cb6f38fac9199e8e19","last_reissued_at":"2026-08-03T00:12:52.353836Z","signature_status":"signed_v1","first_computed_at":"2026-08-03T00:12:52.353836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.28783","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-08-03T00:12:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DbyI/uJgHbGoDVD0rwRiTKshoDR2kEKA3nBdc6UODSWNJp3DKK6qIS3yGLRJRUuC8P/a4f+ye+sifNYZ3tfDAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T19:35:29.838358Z"},"content_sha256":"c8c7f75369276ca15c2f275167ff2b15aeee6fedf7938a397f36a99724551b72","schema_version":"1.0","event_id":"sha256:c8c7f75369276ca15c2f275167ff2b15aeee6fedf7938a397f36a99724551b72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:KASQMUYOELMTUSX3EJ5P4YKO4G","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Optimal Control at Intermediate Times: Controlling Revivals in Spin Chains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"quant-ph","authors_text":"Ignacio R. Sol\\'a, Juan J. Omiste","submitted_at":"2026-07-30T19:12:55Z","abstract_excerpt":"Standard Quantum Optimal Control (QOC) protocols typically maximize a physical objective just at a final target time. However, tracking or measuring the quantum state during the time evolution requires the control at intermediate stages of their evolution. In this work, we extend QOC to accommodate the simultaneous optimization of observables at arbitrary intermediate times. Using a variational approach, we show that intermediate observations induce discontinuities in the costate trajectory, which can be handled with a Krotov algorithm leading to monotonic optimization and convergent results i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.28783","kind":"arxiv","version":1},"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/2607.28783/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":"2026-08-03T00:12:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+xoG3MSM3naHURk/VcH7kEnpsDD6SxtPPg+uzIm9MUuEOatmIE9w/E4hcg6Il6hxl9iapmIKhfyjj9BrhgqeAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T19:35:29.838756Z"},"content_sha256":"de50b059161ba9aa17d3b6a655492d0cd5c8161a90a8b7efd8a3faeaf9b50177","schema_version":"1.0","event_id":"sha256:de50b059161ba9aa17d3b6a655492d0cd5c8161a90a8b7efd8a3faeaf9b50177"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KASQMUYOELMTUSX3EJ5P4YKO4G/bundle.json","state_url":"https://pith.science/pith/KASQMUYOELMTUSX3EJ5P4YKO4G/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KASQMUYOELMTUSX3EJ5P4YKO4G/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":"2026-08-13T19:35:29Z","links":{"resolver":"https://pith.science/pith/KASQMUYOELMTUSX3EJ5P4YKO4G","bundle":"https://pith.science/pith/KASQMUYOELMTUSX3EJ5P4YKO4G/bundle.json","state":"https://pith.science/pith/KASQMUYOELMTUSX3EJ5P4YKO4G/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KASQMUYOELMTUSX3EJ5P4YKO4G/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:KASQMUYOELMTUSX3EJ5P4YKO4G","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":"227e6fde216bf1c9ff37dc4c3485ba9af9626449e15e99ec55aebd342646d538","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T19:12:55Z","title_canon_sha256":"2c4e6fc75430933cb32b00c2f1c072c5dc8eccbe6418753c0e37723b7102ac96"},"schema_version":"1.0","source":{"id":"2607.28783","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.28783","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"arxiv_version","alias_value":"2607.28783v1","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.28783","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"pith_short_12","alias_value":"KASQMUYOELMT","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"pith_short_16","alias_value":"KASQMUYOELMTUSX3","created_at":"2026-08-03T00:12:52Z"},{"alias_kind":"pith_short_8","alias_value":"KASQMUYO","created_at":"2026-08-03T00:12:52Z"}],"graph_snapshots":[{"event_id":"sha256:de50b059161ba9aa17d3b6a655492d0cd5c8161a90a8b7efd8a3faeaf9b50177","target":"graph","created_at":"2026-08-03T00:12:52Z","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/2607.28783/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Standard Quantum Optimal Control (QOC) protocols typically maximize a physical objective just at a final target time. However, tracking or measuring the quantum state during the time evolution requires the control at intermediate stages of their evolution. In this work, we extend QOC to accommodate the simultaneous optimization of observables at arbitrary intermediate times. Using a variational approach, we show that intermediate observations induce discontinuities in the costate trajectory, which can be handled with a Krotov algorithm leading to monotonic optimization and convergent results i","authors_text":"Ignacio R. Sol\\'a, Juan J. Omiste","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T19:12:55Z","title":"Quantum Optimal Control at Intermediate Times: Controlling Revivals in Spin Chains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.28783","kind":"arxiv","version":1},"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:c8c7f75369276ca15c2f275167ff2b15aeee6fedf7938a397f36a99724551b72","target":"record","created_at":"2026-08-03T00:12:52Z","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":"227e6fde216bf1c9ff37dc4c3485ba9af9626449e15e99ec55aebd342646d538","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2026-07-30T19:12:55Z","title_canon_sha256":"2c4e6fc75430933cb32b00c2f1c072c5dc8eccbe6418753c0e37723b7102ac96"},"schema_version":"1.0","source":{"id":"2607.28783","kind":"arxiv","version":1}},"canonical_sha256":"502506530e22d93a4afb227afe614ee1b0f2278f85f9c3cb6f38fac9199e8e19","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"502506530e22d93a4afb227afe614ee1b0f2278f85f9c3cb6f38fac9199e8e19","first_computed_at":"2026-08-03T00:12:52.353836Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-03T00:12:52.353836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K7rGE+6ZJDkTHid3S85WhqYK4iSG8nX+/ku9Xog63KkDp6u/SlxkVfjVqxSLU6Pkhhfm83nea0Nge/esw484Dw==","signature_status":"signed_v1","signed_at":"2026-08-03T00:12:52.356296Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.28783","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c8c7f75369276ca15c2f275167ff2b15aeee6fedf7938a397f36a99724551b72","sha256:de50b059161ba9aa17d3b6a655492d0cd5c8161a90a8b7efd8a3faeaf9b50177"],"state_sha256":"5db2eb8200dbcd7da8ed2edb3be645abbe5832a69de6ecaaccba431b1bb45994"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s73NUxiNwP/MqPxrgYnd9MuGnCUKnqOTUVCzW5L+ZrtalLY+fPudBhssDAd8V3P7xEqRpuju7MFPSZHzm+wLBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T19:35:29.846301Z","bundle_sha256":"be95236b4a46e1a5fa49563e65e2ebb1d662b90356254329db46928ac80590c3"}}