{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:AGSTZCUU4SND2RGPQ5IAP42FH2","short_pith_number":"pith:AGSTZCUU","canonical_record":{"source":{"id":"1708.04214","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-08-14T17:19:00Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"e9434125809e84d0d5a968f512d2eb9beece0dd0ff35ffc79daaaa7fa6cff212","abstract_canon_sha256":"695ae00436618293b9d70c1fa34890288ad3d3a0abb62bbd4aa9f60bed8f1448"},"schema_version":"1.0"},"canonical_sha256":"01a53c8a94e49a3d44cf875007f3453e9be40b53a22c33663735051132219f67","source":{"kind":"arxiv","id":"1708.04214","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.04214","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"arxiv_version","alias_value":"1708.04214v2","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.04214","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"pith_short_12","alias_value":"AGSTZCUU4SND","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AGSTZCUU4SND2RGP","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AGSTZCUU","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:AGSTZCUU4SND2RGPQ5IAP42FH2","target":"record","payload":{"canonical_record":{"source":{"id":"1708.04214","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-08-14T17:19:00Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"e9434125809e84d0d5a968f512d2eb9beece0dd0ff35ffc79daaaa7fa6cff212","abstract_canon_sha256":"695ae00436618293b9d70c1fa34890288ad3d3a0abb62bbd4aa9f60bed8f1448"},"schema_version":"1.0"},"canonical_sha256":"01a53c8a94e49a3d44cf875007f3453e9be40b53a22c33663735051132219f67","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:34.501901Z","signature_b64":"NLS5gLUU7jIvzV7/hJC/42Tv0MHhKfsou3kUywxecdIZJ2TspIQ1Ixg2cCBAP7RnYUYX5jZhGUeWGKlczdk3Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01a53c8a94e49a3d44cf875007f3453e9be40b53a22c33663735051132219f67","last_reissued_at":"2026-05-18T00:14:34.501340Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:34.501340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.04214","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":"2026-05-18T00:14:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e/N34Xe5mzBVFxng6ua7OCTQFCHRC8cWaG8XA7bYZUtGCVXevpJv3QyCqgTIc5P8DnR/Ei6H70AkBJjSS9aWCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T22:46:45.279822Z"},"content_sha256":"3e57321ec17661743c62a19489d96905db17183dc78af792cb65e94e29d589a7","schema_version":"1.0","event_id":"sha256:3e57321ec17661743c62a19489d96905db17183dc78af792cb65e94e29d589a7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:AGSTZCUU4SND2RGPQ5IAP42FH2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A programmable two-qubit quantum processor in silicon","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"D. E. Savage, D. R. Ward, E. Kawakami, L. M. K. Vandersypen, M. A. Eriksson, Mark Friesen, M. G. Lagally, M. Veldhorst, P. Scarlino, S. G. J. Philips, S. N. Coppersmith, T. F. Watson","submitted_at":"2017-08-14T17:19:00Z","abstract_excerpt":"With qubit measurement and control fidelities above the threshold of fault-tolerance, much attention is moving towards the daunting task of scaling up the number of physical qubits to the large numbers needed for fault tolerant quantum computing. Here, quantum dot based spin qubits may offer significant advantages due to their potential for high densities, all-electrical operation, and integration onto an industrial platform. In this system, the initialisation, readout, single- and two-qubit gates have been demonstrated in various qubit representations. However, as seen with other small scale "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.04214","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":"2026-05-18T00:14:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8yBscSAZhW1wnPe4XzWZc8PWz0DfHmqGDEJMqfPP/756DeEAJcyVJZf7DIjbaCNg9E9Omhy47W0/u0Mmk5jQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T22:46:45.280180Z"},"content_sha256":"94d63183c1db525e29354873f5ce6c969f2a4edb818b69e515b930552ecad585","schema_version":"1.0","event_id":"sha256:94d63183c1db525e29354873f5ce6c969f2a4edb818b69e515b930552ecad585"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AGSTZCUU4SND2RGPQ5IAP42FH2/bundle.json","state_url":"https://pith.science/pith/AGSTZCUU4SND2RGPQ5IAP42FH2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AGSTZCUU4SND2RGPQ5IAP42FH2/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":"2026-05-19T22:46:45Z","links":{"resolver":"https://pith.science/pith/AGSTZCUU4SND2RGPQ5IAP42FH2","bundle":"https://pith.science/pith/AGSTZCUU4SND2RGPQ5IAP42FH2/bundle.json","state":"https://pith.science/pith/AGSTZCUU4SND2RGPQ5IAP42FH2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AGSTZCUU4SND2RGPQ5IAP42FH2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:AGSTZCUU4SND2RGPQ5IAP42FH2","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":"695ae00436618293b9d70c1fa34890288ad3d3a0abb62bbd4aa9f60bed8f1448","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-08-14T17:19:00Z","title_canon_sha256":"e9434125809e84d0d5a968f512d2eb9beece0dd0ff35ffc79daaaa7fa6cff212"},"schema_version":"1.0","source":{"id":"1708.04214","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.04214","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"arxiv_version","alias_value":"1708.04214v2","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.04214","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"pith_short_12","alias_value":"AGSTZCUU4SND","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"AGSTZCUU4SND2RGP","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"AGSTZCUU","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:94d63183c1db525e29354873f5ce6c969f2a4edb818b69e515b930552ecad585","target":"graph","created_at":"2026-05-18T00:14:34Z","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":"With qubit measurement and control fidelities above the threshold of fault-tolerance, much attention is moving towards the daunting task of scaling up the number of physical qubits to the large numbers needed for fault tolerant quantum computing. Here, quantum dot based spin qubits may offer significant advantages due to their potential for high densities, all-electrical operation, and integration onto an industrial platform. In this system, the initialisation, readout, single- and two-qubit gates have been demonstrated in various qubit representations. However, as seen with other small scale ","authors_text":"D. E. Savage, D. R. Ward, E. Kawakami, L. M. K. Vandersypen, M. A. Eriksson, Mark Friesen, M. G. Lagally, M. Veldhorst, P. Scarlino, S. G. J. Philips, S. N. Coppersmith, T. F. Watson","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-08-14T17:19:00Z","title":"A programmable two-qubit quantum processor in silicon"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.04214","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":"sha256:3e57321ec17661743c62a19489d96905db17183dc78af792cb65e94e29d589a7","target":"record","created_at":"2026-05-18T00:14:34Z","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":"695ae00436618293b9d70c1fa34890288ad3d3a0abb62bbd4aa9f60bed8f1448","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-08-14T17:19:00Z","title_canon_sha256":"e9434125809e84d0d5a968f512d2eb9beece0dd0ff35ffc79daaaa7fa6cff212"},"schema_version":"1.0","source":{"id":"1708.04214","kind":"arxiv","version":2}},"canonical_sha256":"01a53c8a94e49a3d44cf875007f3453e9be40b53a22c33663735051132219f67","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01a53c8a94e49a3d44cf875007f3453e9be40b53a22c33663735051132219f67","first_computed_at":"2026-05-18T00:14:34.501340Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:34.501340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NLS5gLUU7jIvzV7/hJC/42Tv0MHhKfsou3kUywxecdIZJ2TspIQ1Ixg2cCBAP7RnYUYX5jZhGUeWGKlczdk3Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:34.501901Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.04214","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3e57321ec17661743c62a19489d96905db17183dc78af792cb65e94e29d589a7","sha256:94d63183c1db525e29354873f5ce6c969f2a4edb818b69e515b930552ecad585"],"state_sha256":"bccd7dd1219725e1f31c0ad716fd6c1f6495b614c86b4f40e26a0cc13f6c3c67"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PqZ8zmE+alYTke+0wGxjtI3OdqqGV4vq88UszN5eKQu9gw/4Oy7DKwkyZo1auCrLBVNC4Tk245RzYZXvpIxRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T22:46:45.282179Z","bundle_sha256":"059ac3ff4b71441b22e49178ccecc13f33b57ae436e4c356b959643cbc756f82"}}