{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PAOISUVQGFFX52FXJMWXPLCAOA","short_pith_number":"pith:PAOISUVQ","canonical_record":{"source":{"id":"1108.1399","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-08-05T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"e3052ca548ee6da93f8b15a2b0906f6bab5a02879010ccb8b7c760355107f7a8","abstract_canon_sha256":"ecdb2a1c9eb6b98d17de619a5a7f1abf3fb11040a0fab5dff28675bc39b827d2"},"schema_version":"1.0"},"canonical_sha256":"781c8952b0314b7ee8b74b2d77ac407002e27c63ba8dac90cbe7cf2915419511","source":{"kind":"arxiv","id":"1108.1399","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.1399","created_at":"2026-05-18T04:06:18Z"},{"alias_kind":"arxiv_version","alias_value":"1108.1399v2","created_at":"2026-05-18T04:06:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1399","created_at":"2026-05-18T04:06:18Z"},{"alias_kind":"pith_short_12","alias_value":"PAOISUVQGFFX","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PAOISUVQGFFX52FX","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PAOISUVQ","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PAOISUVQGFFX52FXJMWXPLCAOA","target":"record","payload":{"canonical_record":{"source":{"id":"1108.1399","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-08-05T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"e3052ca548ee6da93f8b15a2b0906f6bab5a02879010ccb8b7c760355107f7a8","abstract_canon_sha256":"ecdb2a1c9eb6b98d17de619a5a7f1abf3fb11040a0fab5dff28675bc39b827d2"},"schema_version":"1.0"},"canonical_sha256":"781c8952b0314b7ee8b74b2d77ac407002e27c63ba8dac90cbe7cf2915419511","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:06:18.952672Z","signature_b64":"jwVrHplW1kzjwY6NT/7ZHXriSdYL3/XUvEUwN7/HfMWhZG0E9o2hVQUML34ECDSmDTempU5H9/W1aN0lAQVGAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"781c8952b0314b7ee8b74b2d77ac407002e27c63ba8dac90cbe7cf2915419511","last_reissued_at":"2026-05-18T04:06:18.951945Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:06:18.951945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1108.1399","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":"2026-05-18T04:06:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nSLEb8PQ0kXlZqKkFGOHXtuLrL4FsGLOWOTfPhw2qvKAzobad9BS9niSc7XdECFf+IcHZa7mvy74wh6lf7zsBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T09:00:43.600713Z"},"content_sha256":"756241d00316e3f33afda2d561eeac65c761b43a434317acb33b07618aa99151","schema_version":"1.0","event_id":"sha256:756241d00316e3f33afda2d561eeac65c761b43a434317acb33b07618aa99151"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PAOISUVQGFFX52FXJMWXPLCAOA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Screening of charged impurities with multi-electron singlet-triplet spin qubits in quantum dots","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Edwin Barnes, J. P. Kestner, N. T. T. Nguyen, S. Das Sarma","submitted_at":"2011-08-05T20:00:04Z","abstract_excerpt":"Charged impurities in semiconductor quantum dots comprise one of the main obstacles to achieving scalable fabrication and manipulation of singlet-triplet spin qubits. We theoretically show that using dots that contain several electrons each can help to overcome this problem through the screening of the rough and noisy impurity potential by the excess electrons. We demonstrate how the desired screening properties turn on as the number of electrons is increased, and we characterize the properties of a double quantum dot singlet-triplet qubit for small odd numbers of electrons per dot. We show th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1399","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":"2026-05-18T04:06:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RcL3s6m3iv/7/3u8BUTOuB43UTfpgSSdP7rDxv5PCN8cqG6ltRZJZ5MiL8fReDl1f8t7h/G9ajfMgPRRTRM4AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T09:00:43.601056Z"},"content_sha256":"9b998ad8f1a7b9b430831cf6ac21a4a9e3ff67b4168ae772e34fc4a0061e82ab","schema_version":"1.0","event_id":"sha256:9b998ad8f1a7b9b430831cf6ac21a4a9e3ff67b4168ae772e34fc4a0061e82ab"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PAOISUVQGFFX52FXJMWXPLCAOA/bundle.json","state_url":"https://pith.science/pith/PAOISUVQGFFX52FXJMWXPLCAOA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PAOISUVQGFFX52FXJMWXPLCAOA/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":"2026-06-03T09:00:43Z","links":{"resolver":"https://pith.science/pith/PAOISUVQGFFX52FXJMWXPLCAOA","bundle":"https://pith.science/pith/PAOISUVQGFFX52FXJMWXPLCAOA/bundle.json","state":"https://pith.science/pith/PAOISUVQGFFX52FXJMWXPLCAOA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PAOISUVQGFFX52FXJMWXPLCAOA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PAOISUVQGFFX52FXJMWXPLCAOA","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":"ecdb2a1c9eb6b98d17de619a5a7f1abf3fb11040a0fab5dff28675bc39b827d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-08-05T20:00:04Z","title_canon_sha256":"e3052ca548ee6da93f8b15a2b0906f6bab5a02879010ccb8b7c760355107f7a8"},"schema_version":"1.0","source":{"id":"1108.1399","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1108.1399","created_at":"2026-05-18T04:06:18Z"},{"alias_kind":"arxiv_version","alias_value":"1108.1399v2","created_at":"2026-05-18T04:06:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1108.1399","created_at":"2026-05-18T04:06:18Z"},{"alias_kind":"pith_short_12","alias_value":"PAOISUVQGFFX","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PAOISUVQGFFX52FX","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PAOISUVQ","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:9b998ad8f1a7b9b430831cf6ac21a4a9e3ff67b4168ae772e34fc4a0061e82ab","target":"graph","created_at":"2026-05-18T04:06:18Z","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":"Charged impurities in semiconductor quantum dots comprise one of the main obstacles to achieving scalable fabrication and manipulation of singlet-triplet spin qubits. We theoretically show that using dots that contain several electrons each can help to overcome this problem through the screening of the rough and noisy impurity potential by the excess electrons. We demonstrate how the desired screening properties turn on as the number of electrons is increased, and we characterize the properties of a double quantum dot singlet-triplet qubit for small odd numbers of electrons per dot. We show th","authors_text":"Edwin Barnes, J. P. Kestner, N. T. T. Nguyen, S. Das Sarma","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-08-05T20:00:04Z","title":"Screening of charged impurities with multi-electron singlet-triplet spin qubits in quantum dots"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1108.1399","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":"sha256:756241d00316e3f33afda2d561eeac65c761b43a434317acb33b07618aa99151","target":"record","created_at":"2026-05-18T04:06:18Z","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":"ecdb2a1c9eb6b98d17de619a5a7f1abf3fb11040a0fab5dff28675bc39b827d2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2011-08-05T20:00:04Z","title_canon_sha256":"e3052ca548ee6da93f8b15a2b0906f6bab5a02879010ccb8b7c760355107f7a8"},"schema_version":"1.0","source":{"id":"1108.1399","kind":"arxiv","version":2}},"canonical_sha256":"781c8952b0314b7ee8b74b2d77ac407002e27c63ba8dac90cbe7cf2915419511","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"781c8952b0314b7ee8b74b2d77ac407002e27c63ba8dac90cbe7cf2915419511","first_computed_at":"2026-05-18T04:06:18.951945Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:06:18.951945Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jwVrHplW1kzjwY6NT/7ZHXriSdYL3/XUvEUwN7/HfMWhZG0E9o2hVQUML34ECDSmDTempU5H9/W1aN0lAQVGAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:06:18.952672Z","signed_message":"canonical_sha256_bytes"},"source_id":"1108.1399","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:756241d00316e3f33afda2d561eeac65c761b43a434317acb33b07618aa99151","sha256:9b998ad8f1a7b9b430831cf6ac21a4a9e3ff67b4168ae772e34fc4a0061e82ab"],"state_sha256":"66e0cad2e11d1f4e675039b54c0d335759f2f7525d25d93128f6130c9a83e554"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X4jrWLIMSxDt7zKbNX7ZnYKBsJK49jVUJQE6MTSYEBdv68HXgUOuWgYjHqmxfh71EOib56qpnEESwro3/Nj1DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T09:00:43.603016Z","bundle_sha256":"6650109ece1d667bd34e64424e0de22dea5816d6cc42466ac2d28592eae8ad00"}}