{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:CYBZ4C7QK5BTWFGFZF4SUTBWN3","short_pith_number":"pith:CYBZ4C7Q","canonical_record":{"source":{"id":"1501.07703","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-01-30T08:55:06Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"title_canon_sha256":"562a319fe59e9f4d24f47fb6dec985714cdfdd2daa8fb1dd65d1b3368c04d5b0","abstract_canon_sha256":"6c157279e0cdc9396b7191a9c3044e77f559b7b6629ab2a2324fde594f186597"},"schema_version":"1.0"},"canonical_sha256":"16039e0bf057433b14c5c9792a4c366eff15ab88672300f593f6b1976ad7e32c","source":{"kind":"arxiv","id":"1501.07703","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07703","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07703v1","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07703","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"pith_short_12","alias_value":"CYBZ4C7QK5BT","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CYBZ4C7QK5BTWFGF","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CYBZ4C7Q","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:CYBZ4C7QK5BTWFGFZF4SUTBWN3","target":"record","payload":{"canonical_record":{"source":{"id":"1501.07703","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-01-30T08:55:06Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"title_canon_sha256":"562a319fe59e9f4d24f47fb6dec985714cdfdd2daa8fb1dd65d1b3368c04d5b0","abstract_canon_sha256":"6c157279e0cdc9396b7191a9c3044e77f559b7b6629ab2a2324fde594f186597"},"schema_version":"1.0"},"canonical_sha256":"16039e0bf057433b14c5c9792a4c366eff15ab88672300f593f6b1976ad7e32c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:07.558537Z","signature_b64":"uBt3ho1uEXKta2p/v5YsIscqTl2hB2iMCp3flDQslf/M+QM9VP4eamClV/3UedPeldEteSC7+J/+yKILLssvCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16039e0bf057433b14c5c9792a4c366eff15ab88672300f593f6b1976ad7e32c","last_reissued_at":"2026-05-18T01:37:07.558003Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:07.558003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1501.07703","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":"2026-05-18T01:37:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iV6rIp/0Va9lyIDcOvGl3uo8DlV7b/3QwPMo+DK/Lfot5ULzRhUJfnH6OMeRudrfQAQT159hoN92vnOE8u0PCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T12:28:02.217844Z"},"content_sha256":"58a7433866a2229533539df76acf0f41dd1b64f4b6396310a39128bf85dd3a34","schema_version":"1.0","event_id":"sha256:58a7433866a2229533539df76acf0f41dd1b64f4b6396310a39128bf85dd3a34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:CYBZ4C7QK5BTWFGFZF4SUTBWN3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Digital quantum simulation of fermionic models with a superconducting circuit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.supr-con"],"primary_cat":"quant-ph","authors_text":"A. Dunsworth, A. G. Fowler, A. Megrant, A. Vainsencher, B. Campbell, B. Chiaro, C. Neill, C. Quintana, D. Sank, E. Jeffrey, E. Solano, I.-C. Hoi, J. Kelly, John M. Martinis, J. Wenner, J. Y. Mutus, L. Garc\\'ia-\\'Alvarez, L. Lamata, P. J. J. O'Malley, P. Roushan, R. Barends, T. C. White, Yu Chen, Z. Chen","submitted_at":"2015-01-30T08:55:06Z","abstract_excerpt":"Simulating quantum physics with a device which itself is quantum mechanical, a notion Richard Feynman originated, would be an unparallelled computational resource. However, the universal quantum simulation of fermionic systems is daunting due to their particle statistics, and Feynman left as an open question whether it could be done, because of the need for non-local control. Here, we implement fermionic interactions with digital techniques in a superconducting circuit. Focusing on the Hubbard model, we perform time evolution with constant interactions as well as a dynamic phase transition wit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07703","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":""},"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":"2026-05-18T01:37:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x09T8cw1SUAWWWtgiHMHzprU1Mphr/56TtdRhjPcnfrwYDsi4XVZQfgnA0GtEYjUcB03/N6KTFolShQf/xdVCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T12:28:02.218206Z"},"content_sha256":"0c45219027b52da8344a32373becf3affdfaa2c4f4a787c118415ede40f0e9a5","schema_version":"1.0","event_id":"sha256:0c45219027b52da8344a32373becf3affdfaa2c4f4a787c118415ede40f0e9a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3/bundle.json","state_url":"https://pith.science/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3/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":"2026-05-20T12:28:02Z","links":{"resolver":"https://pith.science/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3","bundle":"https://pith.science/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3/bundle.json","state":"https://pith.science/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CYBZ4C7QK5BTWFGFZF4SUTBWN3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:CYBZ4C7QK5BTWFGFZF4SUTBWN3","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":"6c157279e0cdc9396b7191a9c3044e77f559b7b6629ab2a2324fde594f186597","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-01-30T08:55:06Z","title_canon_sha256":"562a319fe59e9f4d24f47fb6dec985714cdfdd2daa8fb1dd65d1b3368c04d5b0"},"schema_version":"1.0","source":{"id":"1501.07703","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1501.07703","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"arxiv_version","alias_value":"1501.07703v1","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1501.07703","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"pith_short_12","alias_value":"CYBZ4C7QK5BT","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"CYBZ4C7QK5BTWFGF","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"CYBZ4C7Q","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:0c45219027b52da8344a32373becf3affdfaa2c4f4a787c118415ede40f0e9a5","target":"graph","created_at":"2026-05-18T01:37:07Z","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":"Simulating quantum physics with a device which itself is quantum mechanical, a notion Richard Feynman originated, would be an unparallelled computational resource. However, the universal quantum simulation of fermionic systems is daunting due to their particle statistics, and Feynman left as an open question whether it could be done, because of the need for non-local control. Here, we implement fermionic interactions with digital techniques in a superconducting circuit. Focusing on the Hubbard model, we perform time evolution with constant interactions as well as a dynamic phase transition wit","authors_text":"A. Dunsworth, A. G. Fowler, A. Megrant, A. Vainsencher, B. Campbell, B. Chiaro, C. Neill, C. Quintana, D. Sank, E. Jeffrey, E. Solano, I.-C. Hoi, J. Kelly, John M. Martinis, J. Wenner, J. Y. Mutus, L. Garc\\'ia-\\'Alvarez, L. Lamata, P. J. J. O'Malley, P. Roushan, R. Barends, T. C. White, Yu Chen, Z. Chen","cross_cats":["cond-mat.mes-hall","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-01-30T08:55:06Z","title":"Digital quantum simulation of fermionic models with a superconducting circuit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1501.07703","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":"sha256:58a7433866a2229533539df76acf0f41dd1b64f4b6396310a39128bf85dd3a34","target":"record","created_at":"2026-05-18T01:37:07Z","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":"6c157279e0cdc9396b7191a9c3044e77f559b7b6629ab2a2324fde594f186597","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-01-30T08:55:06Z","title_canon_sha256":"562a319fe59e9f4d24f47fb6dec985714cdfdd2daa8fb1dd65d1b3368c04d5b0"},"schema_version":"1.0","source":{"id":"1501.07703","kind":"arxiv","version":1}},"canonical_sha256":"16039e0bf057433b14c5c9792a4c366eff15ab88672300f593f6b1976ad7e32c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16039e0bf057433b14c5c9792a4c366eff15ab88672300f593f6b1976ad7e32c","first_computed_at":"2026-05-18T01:37:07.558003Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:07.558003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uBt3ho1uEXKta2p/v5YsIscqTl2hB2iMCp3flDQslf/M+QM9VP4eamClV/3UedPeldEteSC7+J/+yKILLssvCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:07.558537Z","signed_message":"canonical_sha256_bytes"},"source_id":"1501.07703","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58a7433866a2229533539df76acf0f41dd1b64f4b6396310a39128bf85dd3a34","sha256:0c45219027b52da8344a32373becf3affdfaa2c4f4a787c118415ede40f0e9a5"],"state_sha256":"ae5d543340382e83890cda7e9ef33ec0cedb013990dead81b571541725070a01"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V+TWRU03pBJwGaucbWoQZb33YJZeuOjiiLfu8v3Rvv7RqJZTHyMd8aCWIfiYnFMXcu33pchBSl0yXsr0i5+bDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T12:28:02.220933Z","bundle_sha256":"e5012ce4c66849659a217c73f1cf3b0d04e33818de80c41417c131375248aaef"}}