{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:YXZ7SFBOTXAKC7SNLSM4424HM4","short_pith_number":"pith:YXZ7SFBO","canonical_record":{"source":{"id":"0802.3892","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-02-26T20:38:31Z","cross_cats_sorted":[],"title_canon_sha256":"09fa9156654462df7a93a340efdb77a7cd96e73399ff698a3fc3f08479675853","abstract_canon_sha256":"562331a1ac5dd1485b883283814b31b93c15d6df4234c2279db17a2d417afe91"},"schema_version":"1.0"},"canonical_sha256":"c5f3f9142e9dc0a17e4d5c99ce6b8767029381e2857ad1105f6d681d023daeb2","source":{"kind":"arxiv","id":"0802.3892","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0802.3892","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"arxiv_version","alias_value":"0802.3892v3","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0802.3892","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"pith_short_12","alias_value":"YXZ7SFBOTXAK","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"pith_short_16","alias_value":"YXZ7SFBOTXAKC7SN","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"pith_short_8","alias_value":"YXZ7SFBO","created_at":"2026-07-04T17:09:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:YXZ7SFBOTXAKC7SNLSM4424HM4","target":"record","payload":{"canonical_record":{"source":{"id":"0802.3892","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-02-26T20:38:31Z","cross_cats_sorted":[],"title_canon_sha256":"09fa9156654462df7a93a340efdb77a7cd96e73399ff698a3fc3f08479675853","abstract_canon_sha256":"562331a1ac5dd1485b883283814b31b93c15d6df4234c2279db17a2d417afe91"},"schema_version":"1.0"},"canonical_sha256":"c5f3f9142e9dc0a17e4d5c99ce6b8767029381e2857ad1105f6d681d023daeb2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:09:35.362847Z","signature_b64":"OAd8yqsK9Ek3rcrOst6Kbm4876/3odwYLEv4ahmiuUZShKskBX9+dj2x9asFD7xVFAb0vs80ehcmpmuqCrT7Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5f3f9142e9dc0a17e4d5c99ce6b8767029381e2857ad1105f6d681d023daeb2","last_reissued_at":"2026-07-04T17:09:35.362475Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:09:35.362475Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0802.3892","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:09:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F+NokV6N+IBddT5kqmaLcXz0yJWHocFl3aBeeEmtbW6/5V+/mIfhiBgErOey0kKWu2ikYnrnwtvppNlJ1Z1CDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T23:19:15.747019Z"},"content_sha256":"422138249a85ba4c8c608f6d868385c4f7306471e1a391114dccfd12aa4007d7","schema_version":"1.0","event_id":"sha256:422138249a85ba4c8c608f6d868385c4f7306471e1a391114dccfd12aa4007d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:YXZ7SFBOTXAKC7SNLSM4424HM4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Incomplete quantum process tomography and principle of maximal entropy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Mario Ziman","submitted_at":"2008-02-26T20:38:31Z","abstract_excerpt":"The main goal of this paper is to extend and apply the principle of maximum entropy (MaxEnt) to incomplete quantum process estimation tasks. We will define a so-called process entropy function being the von Neumann entropy of the state associated with the quantum process via Choi-Jamiolkowski isomorphism. It will be shown that an arbitrary process estimation experiment can be reformulated in a unified framework and MaxEnt principle can be consistently exploited. We will argue that the suggested choice for the process entropy satisfies natural list of properties and it reduces to the state MaxE"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0802.3892","kind":"arxiv","version":3},"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/0802.3892/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":"2026-07-04T17:09:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xs7JYWk+cJegHCJFrBTnXEZCR5NR0q5ue3FTwo0OSNpACNHfnEll2AfF6NZGxdiARF58V1fUrEBQHHaSMqvUBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T23:19:15.747853Z"},"content_sha256":"5bc5642a192e851e69fa8ae7fa4aa22940f99fbf26f80d5ea11b1d2d7de895cd","schema_version":"1.0","event_id":"sha256:5bc5642a192e851e69fa8ae7fa4aa22940f99fbf26f80d5ea11b1d2d7de895cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YXZ7SFBOTXAKC7SNLSM4424HM4/bundle.json","state_url":"https://pith.science/pith/YXZ7SFBOTXAKC7SNLSM4424HM4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YXZ7SFBOTXAKC7SNLSM4424HM4/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":"2026-08-10T23:19:15Z","links":{"resolver":"https://pith.science/pith/YXZ7SFBOTXAKC7SNLSM4424HM4","bundle":"https://pith.science/pith/YXZ7SFBOTXAKC7SNLSM4424HM4/bundle.json","state":"https://pith.science/pith/YXZ7SFBOTXAKC7SNLSM4424HM4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YXZ7SFBOTXAKC7SNLSM4424HM4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:YXZ7SFBOTXAKC7SNLSM4424HM4","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":"562331a1ac5dd1485b883283814b31b93c15d6df4234c2279db17a2d417afe91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-02-26T20:38:31Z","title_canon_sha256":"09fa9156654462df7a93a340efdb77a7cd96e73399ff698a3fc3f08479675853"},"schema_version":"1.0","source":{"id":"0802.3892","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0802.3892","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"arxiv_version","alias_value":"0802.3892v3","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0802.3892","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"pith_short_12","alias_value":"YXZ7SFBOTXAK","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"pith_short_16","alias_value":"YXZ7SFBOTXAKC7SN","created_at":"2026-07-04T17:09:35Z"},{"alias_kind":"pith_short_8","alias_value":"YXZ7SFBO","created_at":"2026-07-04T17:09:35Z"}],"graph_snapshots":[{"event_id":"sha256:5bc5642a192e851e69fa8ae7fa4aa22940f99fbf26f80d5ea11b1d2d7de895cd","target":"graph","created_at":"2026-07-04T17:09:35Z","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/0802.3892/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The main goal of this paper is to extend and apply the principle of maximum entropy (MaxEnt) to incomplete quantum process estimation tasks. We will define a so-called process entropy function being the von Neumann entropy of the state associated with the quantum process via Choi-Jamiolkowski isomorphism. It will be shown that an arbitrary process estimation experiment can be reformulated in a unified framework and MaxEnt principle can be consistently exploited. We will argue that the suggested choice for the process entropy satisfies natural list of properties and it reduces to the state MaxE","authors_text":"Mario Ziman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-02-26T20:38:31Z","title":"Incomplete quantum process tomography and principle of maximal entropy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0802.3892","kind":"arxiv","version":3},"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":"sha256:422138249a85ba4c8c608f6d868385c4f7306471e1a391114dccfd12aa4007d7","target":"record","created_at":"2026-07-04T17:09:35Z","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":"562331a1ac5dd1485b883283814b31b93c15d6df4234c2279db17a2d417afe91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-02-26T20:38:31Z","title_canon_sha256":"09fa9156654462df7a93a340efdb77a7cd96e73399ff698a3fc3f08479675853"},"schema_version":"1.0","source":{"id":"0802.3892","kind":"arxiv","version":3}},"canonical_sha256":"c5f3f9142e9dc0a17e4d5c99ce6b8767029381e2857ad1105f6d681d023daeb2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5f3f9142e9dc0a17e4d5c99ce6b8767029381e2857ad1105f6d681d023daeb2","first_computed_at":"2026-07-04T17:09:35.362475Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:09:35.362475Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OAd8yqsK9Ek3rcrOst6Kbm4876/3odwYLEv4ahmiuUZShKskBX9+dj2x9asFD7xVFAb0vs80ehcmpmuqCrT7Ag==","signature_status":"signed_v1","signed_at":"2026-07-04T17:09:35.362847Z","signed_message":"canonical_sha256_bytes"},"source_id":"0802.3892","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:422138249a85ba4c8c608f6d868385c4f7306471e1a391114dccfd12aa4007d7","sha256:5bc5642a192e851e69fa8ae7fa4aa22940f99fbf26f80d5ea11b1d2d7de895cd"],"state_sha256":"bbfa6600b1a6e3abbf7f53dc04e8b39600cdf41836408f32fe96a738ccc83850"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s+hEAbCo/dhCxYLQefo1TGX+WgryqAdi0xw7z49TzOHfdxrRmHKrciQlNbKQi6n4ySHPpofQrhyjHVc4v7uTBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T23:19:15.755123Z","bundle_sha256":"9b87bdf14d5352a6091995178f66bd523518ff82e9453ddd703ef040b42624a8"}}