{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:QOIBV2HTJBQ2WRHP6ENQLTYFBC","short_pith_number":"pith:QOIBV2HT","canonical_record":{"source":{"id":"quant-ph/0506270","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2005-06-30T18:15:51Z","cross_cats_sorted":[],"title_canon_sha256":"59f08ea9ce7ffbf226938ed2b3c276444351436a27adddbb3cb8c82e570da19a","abstract_canon_sha256":"5ff3a9c88d73edfbe844977bb5887fa51ba4c8ae6033a579eeda202350ee09ad"},"schema_version":"1.0"},"canonical_sha256":"83901ae8f34861ab44eff11b05cf0508aa9d11480e1adde492287504c877cc10","source":{"kind":"arxiv","id":"quant-ph/0506270","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0506270","created_at":"2026-05-18T03:24:19Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0506270v2","created_at":"2026-05-18T03:24:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0506270","created_at":"2026-05-18T03:24:19Z"},{"alias_kind":"pith_short_12","alias_value":"QOIBV2HTJBQ2","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"QOIBV2HTJBQ2WRHP","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"QOIBV2HT","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:QOIBV2HTJBQ2WRHP6ENQLTYFBC","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0506270","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2005-06-30T18:15:51Z","cross_cats_sorted":[],"title_canon_sha256":"59f08ea9ce7ffbf226938ed2b3c276444351436a27adddbb3cb8c82e570da19a","abstract_canon_sha256":"5ff3a9c88d73edfbe844977bb5887fa51ba4c8ae6033a579eeda202350ee09ad"},"schema_version":"1.0"},"canonical_sha256":"83901ae8f34861ab44eff11b05cf0508aa9d11480e1adde492287504c877cc10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:24:19.815313Z","signature_b64":"nAn8tnXTlR0L74PdLNx5vQsv3f0zD92/YAiyG+Wg0UmGIp0hGu0IxeyRaVH8VX3yROTENvWaq171CbtMeTPEAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83901ae8f34861ab44eff11b05cf0508aa9d11480e1adde492287504c877cc10","last_reissued_at":"2026-05-18T03:24:19.814632Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:24:19.814632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0506270","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":"2026-05-18T03:24:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h20nnJWg0NH/AqwsCc0N5I4lamoqK1PEbiBrLRrFdjgjGeY5XgSBj6v/tX8hwdlNur764a9SXjecZV850Sx/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:37:35.930961Z"},"content_sha256":"b468d4540e4b0b43de4f80c489468365e83573e87b8a6bbef1816dc9c9e4832c","schema_version":"1.0","event_id":"sha256:b468d4540e4b0b43de4f80c489468365e83573e87b8a6bbef1816dc9c9e4832c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:QOIBV2HTJBQ2WRHP6ENQLTYFBC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin-1/2 particles moving on a 2D lattice with nearest-neighbor interactions can realize an autonomous quantum computer","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Dominik Janzing","submitted_at":"2005-06-30T18:15:51Z","abstract_excerpt":"What is the simplest Hamiltonian which can implement quantum computation without requiring any control operations during the computation process? In a previous paper we have constructed a 10-local finite-range interaction among qubits on a 2D lattice having this property. Here we show that pair-interactions among qutrits on a 2D lattice are sufficient, too, and can also implement an ergodic computer where the result can be read out from the time average state after some post-selection with high success probability.\n  Two of the 3 qutrit states are given by the two levels of a spin-1/2 particle"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0506270","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":"2026-05-18T03:24:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rx5C7U/zc9olezZj/kzjs3xF1ceVHoHvge0jGUX6XlB6wGsSiY2YGOElElUEv9vS4ODAr9B/TfSDQUpImmerCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T03:37:35.931391Z"},"content_sha256":"43524ab5ba5df4046317e42e82f67f5793bc98439f68e2a8218b046609776d31","schema_version":"1.0","event_id":"sha256:43524ab5ba5df4046317e42e82f67f5793bc98439f68e2a8218b046609776d31"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC/bundle.json","state_url":"https://pith.science/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC/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":"2026-06-04T03:37:35Z","links":{"resolver":"https://pith.science/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC","bundle":"https://pith.science/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC/bundle.json","state":"https://pith.science/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QOIBV2HTJBQ2WRHP6ENQLTYFBC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:QOIBV2HTJBQ2WRHP6ENQLTYFBC","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":"5ff3a9c88d73edfbe844977bb5887fa51ba4c8ae6033a579eeda202350ee09ad","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2005-06-30T18:15:51Z","title_canon_sha256":"59f08ea9ce7ffbf226938ed2b3c276444351436a27adddbb3cb8c82e570da19a"},"schema_version":"1.0","source":{"id":"quant-ph/0506270","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0506270","created_at":"2026-05-18T03:24:19Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0506270v2","created_at":"2026-05-18T03:24:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0506270","created_at":"2026-05-18T03:24:19Z"},{"alias_kind":"pith_short_12","alias_value":"QOIBV2HTJBQ2","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"QOIBV2HTJBQ2WRHP","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"QOIBV2HT","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:43524ab5ba5df4046317e42e82f67f5793bc98439f68e2a8218b046609776d31","target":"graph","created_at":"2026-05-18T03:24:19Z","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":"What is the simplest Hamiltonian which can implement quantum computation without requiring any control operations during the computation process? In a previous paper we have constructed a 10-local finite-range interaction among qubits on a 2D lattice having this property. Here we show that pair-interactions among qutrits on a 2D lattice are sufficient, too, and can also implement an ergodic computer where the result can be read out from the time average state after some post-selection with high success probability.\n  Two of the 3 qutrit states are given by the two levels of a spin-1/2 particle","authors_text":"Dominik Janzing","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2005-06-30T18:15:51Z","title":"Spin-1/2 particles moving on a 2D lattice with nearest-neighbor interactions can realize an autonomous quantum computer"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0506270","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:b468d4540e4b0b43de4f80c489468365e83573e87b8a6bbef1816dc9c9e4832c","target":"record","created_at":"2026-05-18T03:24:19Z","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":"5ff3a9c88d73edfbe844977bb5887fa51ba4c8ae6033a579eeda202350ee09ad","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2005-06-30T18:15:51Z","title_canon_sha256":"59f08ea9ce7ffbf226938ed2b3c276444351436a27adddbb3cb8c82e570da19a"},"schema_version":"1.0","source":{"id":"quant-ph/0506270","kind":"arxiv","version":2}},"canonical_sha256":"83901ae8f34861ab44eff11b05cf0508aa9d11480e1adde492287504c877cc10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83901ae8f34861ab44eff11b05cf0508aa9d11480e1adde492287504c877cc10","first_computed_at":"2026-05-18T03:24:19.814632Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:19.814632Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nAn8tnXTlR0L74PdLNx5vQsv3f0zD92/YAiyG+Wg0UmGIp0hGu0IxeyRaVH8VX3yROTENvWaq171CbtMeTPEAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:19.815313Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0506270","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b468d4540e4b0b43de4f80c489468365e83573e87b8a6bbef1816dc9c9e4832c","sha256:43524ab5ba5df4046317e42e82f67f5793bc98439f68e2a8218b046609776d31"],"state_sha256":"b6ab89d41c432b3f326f4312ba4b7769f693c67cd7650748c0260b1e98d565bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rtRr7kl3l4B+oorzAXzY5WJoTi1HF7XV79YXE2WO5ddnAO4R42pV6h+f6ONoc+ClnaI6ryzkVNsGuQfDMW2TBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T03:37:35.934835Z","bundle_sha256":"0f5d353939fd7960247e0a33fca716e63e46ec30f4a04b54ee2b0ba671a520ce"}}