{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZNXC7MRAFUISKXPZEVQ6TPHW4M","short_pith_number":"pith:ZNXC7MRA","canonical_record":{"source":{"id":"1411.6379","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-11-24T08:34:15Z","cross_cats_sorted":[],"title_canon_sha256":"96561b3103857f21dd4cbbc13d6e1c39099f0b2cce4397c61309b716efc85b7e","abstract_canon_sha256":"185f3041e0d2d3a9f72b273d44ba444b3a54f1aa29d12d17835b3e3b49ee391a"},"schema_version":"1.0"},"canonical_sha256":"cb6e2fb2202d11255df92561e9bcf6e306d625810af3762b9f8934c4ca5d4cad","source":{"kind":"arxiv","id":"1411.6379","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.6379","created_at":"2026-05-18T02:17:33Z"},{"alias_kind":"arxiv_version","alias_value":"1411.6379v2","created_at":"2026-05-18T02:17:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.6379","created_at":"2026-05-18T02:17:33Z"},{"alias_kind":"pith_short_12","alias_value":"ZNXC7MRAFUIS","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZNXC7MRAFUISKXPZ","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZNXC7MRA","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZNXC7MRAFUISKXPZEVQ6TPHW4M","target":"record","payload":{"canonical_record":{"source":{"id":"1411.6379","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-11-24T08:34:15Z","cross_cats_sorted":[],"title_canon_sha256":"96561b3103857f21dd4cbbc13d6e1c39099f0b2cce4397c61309b716efc85b7e","abstract_canon_sha256":"185f3041e0d2d3a9f72b273d44ba444b3a54f1aa29d12d17835b3e3b49ee391a"},"schema_version":"1.0"},"canonical_sha256":"cb6e2fb2202d11255df92561e9bcf6e306d625810af3762b9f8934c4ca5d4cad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:33.461279Z","signature_b64":"e7LV3H1X6k2tv28uQqDGZonS4k0r1FCYVR/qcVlJF2jD/Xstgn+hJQ9fVfe1LaHWT1D5O31cc6iXZlWggsOABw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb6e2fb2202d11255df92561e9bcf6e306d625810af3762b9f8934c4ca5d4cad","last_reissued_at":"2026-05-18T02:17:33.460635Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:33.460635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.6379","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":"2026-05-18T02:17:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"26sIgBn/ObEeChvTHWr1wIKu2BYaOpnwra41F3QuEgi3eEBEeIWiY30ZyeNn09DUOGtdeOoXoHMIykGkRXo1Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:53:44.642507Z"},"content_sha256":"e2514a7662dc4a518c61cd202a5b745e3a3ee6b9993482bb573792c41b519cfc","schema_version":"1.0","event_id":"sha256:e2514a7662dc4a518c61cd202a5b745e3a3ee6b9993482bb573792c41b519cfc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZNXC7MRAFUISKXPZEVQ6TPHW4M","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Scalable reconstruction of unitary processes and Hamiltonians","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"M.B. Plenio, M. Cramer, M. Holz\\\"apfel, T. Baumgratz","submitted_at":"2014-11-24T08:34:15Z","abstract_excerpt":"Based on recently introduced efficient quantum state tomography schemes, we propose a scalable method for the tomography of unitary processes and the reconstruction of one-dimensional local Hamiltonians. As opposed to the exponential scaling with the number of subsystems of standard quantum process tomography, the method relies only on measurements of linearly many local observables and either (a) the ability to prepare eigenstates of locally informationally complete operators or (b) access to an ancilla of the same size as the to-be-characterized system and the ability to prepare a maximally "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.6379","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":""},"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":"2026-05-18T02:17:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f/ce1XEorhvFYlEbS9Hx3zE8EU9UFQGy0MucuvFmF3S51B8nLp6wkzBGc+fPLKBDW8JcrOzV5dKZonuA+7bDBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T17:53:44.643169Z"},"content_sha256":"b81e6ba5851136d786e98ec242cfd69fd0c04a7588c6b57b596823cd57b7a1f4","schema_version":"1.0","event_id":"sha256:b81e6ba5851136d786e98ec242cfd69fd0c04a7588c6b57b596823cd57b7a1f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M/bundle.json","state_url":"https://pith.science/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M/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":"2026-05-29T17:53:44Z","links":{"resolver":"https://pith.science/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M","bundle":"https://pith.science/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M/bundle.json","state":"https://pith.science/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZNXC7MRAFUISKXPZEVQ6TPHW4M/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZNXC7MRAFUISKXPZEVQ6TPHW4M","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":"185f3041e0d2d3a9f72b273d44ba444b3a54f1aa29d12d17835b3e3b49ee391a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-11-24T08:34:15Z","title_canon_sha256":"96561b3103857f21dd4cbbc13d6e1c39099f0b2cce4397c61309b716efc85b7e"},"schema_version":"1.0","source":{"id":"1411.6379","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.6379","created_at":"2026-05-18T02:17:33Z"},{"alias_kind":"arxiv_version","alias_value":"1411.6379v2","created_at":"2026-05-18T02:17:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.6379","created_at":"2026-05-18T02:17:33Z"},{"alias_kind":"pith_short_12","alias_value":"ZNXC7MRAFUIS","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZNXC7MRAFUISKXPZ","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZNXC7MRA","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:b81e6ba5851136d786e98ec242cfd69fd0c04a7588c6b57b596823cd57b7a1f4","target":"graph","created_at":"2026-05-18T02:17:33Z","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"},"paper":{"abstract_excerpt":"Based on recently introduced efficient quantum state tomography schemes, we propose a scalable method for the tomography of unitary processes and the reconstruction of one-dimensional local Hamiltonians. As opposed to the exponential scaling with the number of subsystems of standard quantum process tomography, the method relies only on measurements of linearly many local observables and either (a) the ability to prepare eigenstates of locally informationally complete operators or (b) access to an ancilla of the same size as the to-be-characterized system and the ability to prepare a maximally ","authors_text":"M.B. Plenio, M. Cramer, M. Holz\\\"apfel, T. Baumgratz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-11-24T08:34:15Z","title":"Scalable reconstruction of unitary processes and Hamiltonians"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.6379","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:e2514a7662dc4a518c61cd202a5b745e3a3ee6b9993482bb573792c41b519cfc","target":"record","created_at":"2026-05-18T02:17:33Z","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":"185f3041e0d2d3a9f72b273d44ba444b3a54f1aa29d12d17835b3e3b49ee391a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-11-24T08:34:15Z","title_canon_sha256":"96561b3103857f21dd4cbbc13d6e1c39099f0b2cce4397c61309b716efc85b7e"},"schema_version":"1.0","source":{"id":"1411.6379","kind":"arxiv","version":2}},"canonical_sha256":"cb6e2fb2202d11255df92561e9bcf6e306d625810af3762b9f8934c4ca5d4cad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb6e2fb2202d11255df92561e9bcf6e306d625810af3762b9f8934c4ca5d4cad","first_computed_at":"2026-05-18T02:17:33.460635Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:33.460635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e7LV3H1X6k2tv28uQqDGZonS4k0r1FCYVR/qcVlJF2jD/Xstgn+hJQ9fVfe1LaHWT1D5O31cc6iXZlWggsOABw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:33.461279Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.6379","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e2514a7662dc4a518c61cd202a5b745e3a3ee6b9993482bb573792c41b519cfc","sha256:b81e6ba5851136d786e98ec242cfd69fd0c04a7588c6b57b596823cd57b7a1f4"],"state_sha256":"3bd882125c8c9ebc5cdbb158000205e8cd7f2cf8fd93f8298b931a28694bd547"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ddm4HtMEYo+jbLYZaWnFnVKlQPJ3OZa/0J7RHQMr6qwOrP2WGjblhbchGz/pxjecXlhf8P4xfan1pr48wrRYBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T17:53:44.646879Z","bundle_sha256":"db51e801c8f505f17f741cd90788260cbe1c8ff4e145aff320caab9f13870523"}}