{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:SDMTWM3COAACV6HQZGDOTN7UCP","short_pith_number":"pith:SDMTWM3C","canonical_record":{"source":{"id":"2207.00298","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2022-07-01T09:47:26Z","cross_cats_sorted":[],"title_canon_sha256":"d9e59c0f3bd595565d0b45888ff9766152aac932277b69e38b8e7e493506b5d9","abstract_canon_sha256":"a4e41a113e869952794c0a41f593a73afd1539cc42c84ffde905df29643298f9"},"schema_version":"1.0"},"canonical_sha256":"90d93b336270002af8f0c986e9b7f413e768bc2ade74290615e368fb55a35f84","source":{"kind":"arxiv","id":"2207.00298","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.00298","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"arxiv_version","alias_value":"2207.00298v3","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.00298","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"pith_short_12","alias_value":"SDMTWM3COAAC","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"pith_short_16","alias_value":"SDMTWM3COAACV6HQ","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"pith_short_8","alias_value":"SDMTWM3C","created_at":"2026-07-05T05:42:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:SDMTWM3COAACV6HQZGDOTN7UCP","target":"record","payload":{"canonical_record":{"source":{"id":"2207.00298","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2022-07-01T09:47:26Z","cross_cats_sorted":[],"title_canon_sha256":"d9e59c0f3bd595565d0b45888ff9766152aac932277b69e38b8e7e493506b5d9","abstract_canon_sha256":"a4e41a113e869952794c0a41f593a73afd1539cc42c84ffde905df29643298f9"},"schema_version":"1.0"},"canonical_sha256":"90d93b336270002af8f0c986e9b7f413e768bc2ade74290615e368fb55a35f84","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:42:25.865756Z","signature_b64":"WTuqVTjFM555jNcIH7nOXZ+Rqs4oIz0ZGrzgs81J0rUNc638amKi9RedJ1+OV2AZRapYAM0xr2+rDz7GME0FBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"90d93b336270002af8f0c986e9b7f413e768bc2ade74290615e368fb55a35f84","last_reissued_at":"2026-07-05T05:42:25.865307Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:42:25.865307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.00298","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":"2026-07-05T05:42:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z5/pGDZLVUgO1EdZfQofGJe+AeZ47U3W1wJHlkpRS/vU+eOEnTrSXKM77nKqifSuVsUr993kkWuUSnEX5i/ACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:55:39.367838Z"},"content_sha256":"59d0f898d02d5d72d00da734481066cda7b191a1328866d79dc100a2b80f2dd7","schema_version":"1.0","event_id":"sha256:59d0f898d02d5d72d00da734481066cda7b191a1328866d79dc100a2b80f2dd7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:SDMTWM3COAACV6HQZGDOTN7UCP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learning Quantum Systems","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Antonio Andrea Gentile, Cristian Bonato, David Craig, Erik M. Gauger, Florian Marquardt, Leonardo Banchi, Luca Pezze', Natalia Ares, Raffaele Santagati, Valentin Gebhart","submitted_at":"2022-07-01T09:47:26Z","abstract_excerpt":"The future development of quantum technologies relies on creating and manipulating quantum systems of increasing complexity, with key applications in computation, simulation and sensing. This poses severe challenges in the efficient control, calibration and validation of quantum states and their dynamics. Although the full simulation of large-scale quantum systems may only be possible on a quantum computer, classical characterization and optimization methods still play an important role. Here, we review different approaches that use classical post-processing techniques, possibly combined with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.00298","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/2207.00298/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":"2026-07-05T05:42:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YEbP4VWtw0lh1Dwvtkc0OSlYD1YQm1DSi8cbn1gJ0J7F3+zi2l1jnKZVunH1uiSddUz7L13D9MhFjnGBcmK5Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T11:55:39.368212Z"},"content_sha256":"ca171fd1e7b2b38fa3258a4530f452f5a8f18f12f872ead56adda656a09ea5bd","schema_version":"1.0","event_id":"sha256:ca171fd1e7b2b38fa3258a4530f452f5a8f18f12f872ead56adda656a09ea5bd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SDMTWM3COAACV6HQZGDOTN7UCP/bundle.json","state_url":"https://pith.science/pith/SDMTWM3COAACV6HQZGDOTN7UCP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SDMTWM3COAACV6HQZGDOTN7UCP/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":"2026-07-07T11:55:39Z","links":{"resolver":"https://pith.science/pith/SDMTWM3COAACV6HQZGDOTN7UCP","bundle":"https://pith.science/pith/SDMTWM3COAACV6HQZGDOTN7UCP/bundle.json","state":"https://pith.science/pith/SDMTWM3COAACV6HQZGDOTN7UCP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SDMTWM3COAACV6HQZGDOTN7UCP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:SDMTWM3COAACV6HQZGDOTN7UCP","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":"a4e41a113e869952794c0a41f593a73afd1539cc42c84ffde905df29643298f9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2022-07-01T09:47:26Z","title_canon_sha256":"d9e59c0f3bd595565d0b45888ff9766152aac932277b69e38b8e7e493506b5d9"},"schema_version":"1.0","source":{"id":"2207.00298","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.00298","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"arxiv_version","alias_value":"2207.00298v3","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.00298","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"pith_short_12","alias_value":"SDMTWM3COAAC","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"pith_short_16","alias_value":"SDMTWM3COAACV6HQ","created_at":"2026-07-05T05:42:25Z"},{"alias_kind":"pith_short_8","alias_value":"SDMTWM3C","created_at":"2026-07-05T05:42:25Z"}],"graph_snapshots":[{"event_id":"sha256:ca171fd1e7b2b38fa3258a4530f452f5a8f18f12f872ead56adda656a09ea5bd","target":"graph","created_at":"2026-07-05T05:42:25Z","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/2207.00298/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The future development of quantum technologies relies on creating and manipulating quantum systems of increasing complexity, with key applications in computation, simulation and sensing. This poses severe challenges in the efficient control, calibration and validation of quantum states and their dynamics. Although the full simulation of large-scale quantum systems may only be possible on a quantum computer, classical characterization and optimization methods still play an important role. Here, we review different approaches that use classical post-processing techniques, possibly combined with ","authors_text":"Antonio Andrea Gentile, Cristian Bonato, David Craig, Erik M. Gauger, Florian Marquardt, Leonardo Banchi, Luca Pezze', Natalia Ares, Raffaele Santagati, Valentin Gebhart","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2022-07-01T09:47:26Z","title":"Learning Quantum Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.00298","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":"sha256:59d0f898d02d5d72d00da734481066cda7b191a1328866d79dc100a2b80f2dd7","target":"record","created_at":"2026-07-05T05:42:25Z","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":"a4e41a113e869952794c0a41f593a73afd1539cc42c84ffde905df29643298f9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"quant-ph","submitted_at":"2022-07-01T09:47:26Z","title_canon_sha256":"d9e59c0f3bd595565d0b45888ff9766152aac932277b69e38b8e7e493506b5d9"},"schema_version":"1.0","source":{"id":"2207.00298","kind":"arxiv","version":3}},"canonical_sha256":"90d93b336270002af8f0c986e9b7f413e768bc2ade74290615e368fb55a35f84","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"90d93b336270002af8f0c986e9b7f413e768bc2ade74290615e368fb55a35f84","first_computed_at":"2026-07-05T05:42:25.865307Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:42:25.865307Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WTuqVTjFM555jNcIH7nOXZ+Rqs4oIz0ZGrzgs81J0rUNc638amKi9RedJ1+OV2AZRapYAM0xr2+rDz7GME0FBA==","signature_status":"signed_v1","signed_at":"2026-07-05T05:42:25.865756Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.00298","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:59d0f898d02d5d72d00da734481066cda7b191a1328866d79dc100a2b80f2dd7","sha256:ca171fd1e7b2b38fa3258a4530f452f5a8f18f12f872ead56adda656a09ea5bd"],"state_sha256":"12e399539383c47d5c0da51a8caa7adf5cd254fed1ad131c6e7be20a5512a9f7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bAr9BbsuUn4jsl/nJknSDuDnk279QXNcccZNKdjh40RLeVF/oNBJZJU8vQngel3O0YJLk8MqwWaxo9Ww0gkMAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T11:55:39.370127Z","bundle_sha256":"bf669b56f400468b7ab4de80aa32189f81e2e36d2d305f2c11509deac3d5ac49"}}