{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:PIQZOQV7N4DIIPQHGFFEMXGWZ6","short_pith_number":"pith:PIQZOQV7","canonical_record":{"source":{"id":"cond-mat/0502634","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2005-02-26T13:04:29Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a628258bd192cdf57d0ac43d23294bf2421f24ee48823d1388392249a4fbd15d","abstract_canon_sha256":"d2ed90baaad1c2ec742f63a69c99135b093619b489c1ad89160b7534db000d76"},"schema_version":"1.0"},"canonical_sha256":"7a219742bf6f06843e07314a465cd6cfaca40ab2948ccfd0955aad4f6efa0a51","source":{"kind":"arxiv","id":"cond-mat/0502634","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0502634","created_at":"2026-05-18T01:39:53Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0502634v2","created_at":"2026-05-18T01:39:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0502634","created_at":"2026-05-18T01:39:53Z"},{"alias_kind":"pith_short_12","alias_value":"PIQZOQV7N4DI","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"PIQZOQV7N4DIIPQH","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"PIQZOQV7","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:PIQZOQV7N4DIIPQHGFFEMXGWZ6","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0502634","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2005-02-26T13:04:29Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"a628258bd192cdf57d0ac43d23294bf2421f24ee48823d1388392249a4fbd15d","abstract_canon_sha256":"d2ed90baaad1c2ec742f63a69c99135b093619b489c1ad89160b7534db000d76"},"schema_version":"1.0"},"canonical_sha256":"7a219742bf6f06843e07314a465cd6cfaca40ab2948ccfd0955aad4f6efa0a51","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:53.639492Z","signature_b64":"ho1mivpBVAtrqEYZmA7ShicDJiGVtYYhh/u4SljfwqlC75xNZRVtcy57tVt3+8s8QxKhFV6y1JuvVSnx4ThtDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a219742bf6f06843e07314a465cd6cfaca40ab2948ccfd0955aad4f6efa0a51","last_reissued_at":"2026-05-18T01:39:53.638928Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:53.638928Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0502634","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":"2026-05-18T01:39:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zEqyBGzfSMQC1T7dSe1negQz6EBsUwisvFL4+lBfPTGGNmrvN8F8I5kB7LybJbh4yiowm5L/1M8MRC7NRHUoCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T09:07:58.070453Z"},"content_sha256":"1229cf8f196bef72031be343f5c40bdd432bc91600db257b3a430d46d902d907","schema_version":"1.0","event_id":"sha256:1229cf8f196bef72031be343f5c40bdd432bc91600db257b3a430d46d902d907"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:PIQZOQV7N4DIIPQHGFFEMXGWZ6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gate-Defined Quantum Dots on Carbon Nanotubes","license":"","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"C. M. Marcus, J. M. Chow, M. J. Biercuk, N. Mason, S. Garaj","submitted_at":"2005-02-26T13:04:29Z","abstract_excerpt":"We report the realization of nanotube-based quantum dot structures that use local electrostatic gating to produce individually controllable dots in series along a nanotube. Electrostatic top-gates produce depletion regions in the underlying tube; a pair of such depletion regions defines a quantum dot. Transparencies of tunnel barriers as well as the electrostatic energies, within single and multiple dots, can be tuned by gate voltages. The approach allows accurate control over multiple devices on a single tube, and serves as a design paradigm for nanotube-based electronics and quantum systems."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0502634","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":"2026-05-18T01:39:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nmu8mOjFsZf/lROGQ/O89KPcTtKYzjX3Q40pKLjnJx1sa/ALc/qPLX+R6oOSOPrGjJyjLAXr5Gdqf/TcF5uPBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T09:07:58.071177Z"},"content_sha256":"ba6a1c702d24f6b68be30b70be09e1cf3c7686db32bbc0dfaaea0604a7cd2e58","schema_version":"1.0","event_id":"sha256:ba6a1c702d24f6b68be30b70be09e1cf3c7686db32bbc0dfaaea0604a7cd2e58"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6/bundle.json","state_url":"https://pith.science/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6/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":"2026-05-19T09:07:58Z","links":{"resolver":"https://pith.science/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6","bundle":"https://pith.science/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6/bundle.json","state":"https://pith.science/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PIQZOQV7N4DIIPQHGFFEMXGWZ6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:PIQZOQV7N4DIIPQHGFFEMXGWZ6","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":"d2ed90baaad1c2ec742f63a69c99135b093619b489c1ad89160b7534db000d76","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2005-02-26T13:04:29Z","title_canon_sha256":"a628258bd192cdf57d0ac43d23294bf2421f24ee48823d1388392249a4fbd15d"},"schema_version":"1.0","source":{"id":"cond-mat/0502634","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0502634","created_at":"2026-05-18T01:39:53Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0502634v2","created_at":"2026-05-18T01:39:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0502634","created_at":"2026-05-18T01:39:53Z"},{"alias_kind":"pith_short_12","alias_value":"PIQZOQV7N4DI","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"PIQZOQV7N4DIIPQH","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"PIQZOQV7","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:ba6a1c702d24f6b68be30b70be09e1cf3c7686db32bbc0dfaaea0604a7cd2e58","target":"graph","created_at":"2026-05-18T01:39:53Z","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":"We report the realization of nanotube-based quantum dot structures that use local electrostatic gating to produce individually controllable dots in series along a nanotube. Electrostatic top-gates produce depletion regions in the underlying tube; a pair of such depletion regions defines a quantum dot. Transparencies of tunnel barriers as well as the electrostatic energies, within single and multiple dots, can be tuned by gate voltages. The approach allows accurate control over multiple devices on a single tube, and serves as a design paradigm for nanotube-based electronics and quantum systems.","authors_text":"C. M. Marcus, J. M. Chow, M. J. Biercuk, N. Mason, S. Garaj","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2005-02-26T13:04:29Z","title":"Gate-Defined Quantum Dots on Carbon Nanotubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0502634","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":"sha256:1229cf8f196bef72031be343f5c40bdd432bc91600db257b3a430d46d902d907","target":"record","created_at":"2026-05-18T01:39:53Z","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":"d2ed90baaad1c2ec742f63a69c99135b093619b489c1ad89160b7534db000d76","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"","primary_cat":"cond-mat.mes-hall","submitted_at":"2005-02-26T13:04:29Z","title_canon_sha256":"a628258bd192cdf57d0ac43d23294bf2421f24ee48823d1388392249a4fbd15d"},"schema_version":"1.0","source":{"id":"cond-mat/0502634","kind":"arxiv","version":2}},"canonical_sha256":"7a219742bf6f06843e07314a465cd6cfaca40ab2948ccfd0955aad4f6efa0a51","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a219742bf6f06843e07314a465cd6cfaca40ab2948ccfd0955aad4f6efa0a51","first_computed_at":"2026-05-18T01:39:53.638928Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:53.638928Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ho1mivpBVAtrqEYZmA7ShicDJiGVtYYhh/u4SljfwqlC75xNZRVtcy57tVt3+8s8QxKhFV6y1JuvVSnx4ThtDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:53.639492Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0502634","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1229cf8f196bef72031be343f5c40bdd432bc91600db257b3a430d46d902d907","sha256:ba6a1c702d24f6b68be30b70be09e1cf3c7686db32bbc0dfaaea0604a7cd2e58"],"state_sha256":"b9ffa87288cbbf593bf69012792ca71409a8dacb5fd8bc4fe2cc41a659ab7db2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j7TFX0N23LWsIgTY/e76LAxkD7j+rZEaSl5UXIuJSzoc93CKZybsa9cMYPqR07rMTgmlXb1r1VlSKKxCe6KfCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T09:07:58.074562Z","bundle_sha256":"d294a70e5c79030f99b89a52b902fdb3321018d0dbe921c78f826fda7cc248e2"}}