{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:G4UMDRJPRR7SRQGY6RBDU5LKYG","short_pith_number":"pith:G4UMDRJP","canonical_record":{"source":{"id":"1804.06415","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-04-17T18:00:06Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"77db8f4a7362d4395be34c29a4cb5ea534b64529613ea3f6c359f8187935c82b","abstract_canon_sha256":"44548c151da045f013cbe4625e3d1d17b66ed2da080540bdd0bb713a4380d1f2"},"schema_version":"1.0"},"canonical_sha256":"3728c1c52f8c7f28c0d8f4423a756ac19ea799aecec93ec84b306eeb5d50d91a","source":{"kind":"arxiv","id":"1804.06415","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.06415","created_at":"2026-05-18T00:13:50Z"},{"alias_kind":"arxiv_version","alias_value":"1804.06415v2","created_at":"2026-05-18T00:13:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.06415","created_at":"2026-05-18T00:13:50Z"},{"alias_kind":"pith_short_12","alias_value":"G4UMDRJPRR7S","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"G4UMDRJPRR7SRQGY","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"G4UMDRJP","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:G4UMDRJPRR7SRQGY6RBDU5LKYG","target":"record","payload":{"canonical_record":{"source":{"id":"1804.06415","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-04-17T18:00:06Z","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"title_canon_sha256":"77db8f4a7362d4395be34c29a4cb5ea534b64529613ea3f6c359f8187935c82b","abstract_canon_sha256":"44548c151da045f013cbe4625e3d1d17b66ed2da080540bdd0bb713a4380d1f2"},"schema_version":"1.0"},"canonical_sha256":"3728c1c52f8c7f28c0d8f4423a756ac19ea799aecec93ec84b306eeb5d50d91a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:13:50.520497Z","signature_b64":"Z/HWDn+R58/2D2Fok6OX0yonbVTdgA85vO8yx76KrD01BFn4V9nh7heoioXbegMxugHqnlkPydOH03UtfsrQCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3728c1c52f8c7f28c0d8f4423a756ac19ea799aecec93ec84b306eeb5d50d91a","last_reissued_at":"2026-05-18T00:13:50.519668Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:13:50.519668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.06415","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":"2026-05-18T00:13:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xw3sAkWwKJYK1mVFK6UbDGp4bRFsLeDSZf+MC2zgGceeIm9NH2BSvAouVE8pWcwgPKhO6xCs75aJKyw6AzioBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:37:35.345265Z"},"content_sha256":"aadf016845ec1bf8794db8b47bb9924bc1343b68d8ba744673802ef3f3e951fa","schema_version":"1.0","event_id":"sha256:aadf016845ec1bf8794db8b47bb9924bc1343b68d8ba744673802ef3f3e951fa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:G4UMDRJPRR7SRQGY6RBDU5LKYG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Zero-dimensional topologically nontrivial state in a superconducting quantum dot","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con","quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alessandro Braggio, Pasquale Marra, Roberta Citro","submitted_at":"2018-04-17T18:00:06Z","abstract_excerpt":"The classification of topological states of matter in terms of unitary symmetries and dimensionality predicts the existence of nontrivial topological states even in zero-dimensional systems, i.e., a system with a discrete energy spectrum. Here, we show that a quantum dot coupled with two superconducting leads can realize a nontrivial zero-dimensional topological superconductor with broken time-reversal symmetry, which corresponds to the finite size limit of the one-dimensional topological superconductor. Topological phase transitions corresponds to a change of the fermion parity, and to the pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06415","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":"2026-05-18T00:13:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aEhg1ZxZG03q0OlyKS4MWEAOs3BBqVKWEKmFBbflgyrrNymGoZDNBnsF1g+nrLAEperKEzQ34ki/oHZibgGCCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T00:37:35.345948Z"},"content_sha256":"c3f36d51f03a1d8192675ea9e8dd9e54b3bcdc41aaccf770c642e33cbb0456a1","schema_version":"1.0","event_id":"sha256:c3f36d51f03a1d8192675ea9e8dd9e54b3bcdc41aaccf770c642e33cbb0456a1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG/bundle.json","state_url":"https://pith.science/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG/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":"2026-05-26T00:37:35Z","links":{"resolver":"https://pith.science/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG","bundle":"https://pith.science/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG/bundle.json","state":"https://pith.science/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G4UMDRJPRR7SRQGY6RBDU5LKYG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:G4UMDRJPRR7SRQGY6RBDU5LKYG","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":"44548c151da045f013cbe4625e3d1d17b66ed2da080540bdd0bb713a4380d1f2","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-04-17T18:00:06Z","title_canon_sha256":"77db8f4a7362d4395be34c29a4cb5ea534b64529613ea3f6c359f8187935c82b"},"schema_version":"1.0","source":{"id":"1804.06415","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.06415","created_at":"2026-05-18T00:13:50Z"},{"alias_kind":"arxiv_version","alias_value":"1804.06415v2","created_at":"2026-05-18T00:13:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.06415","created_at":"2026-05-18T00:13:50Z"},{"alias_kind":"pith_short_12","alias_value":"G4UMDRJPRR7S","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"G4UMDRJPRR7SRQGY","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"G4UMDRJP","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:c3f36d51f03a1d8192675ea9e8dd9e54b3bcdc41aaccf770c642e33cbb0456a1","target":"graph","created_at":"2026-05-18T00:13:50Z","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":"The classification of topological states of matter in terms of unitary symmetries and dimensionality predicts the existence of nontrivial topological states even in zero-dimensional systems, i.e., a system with a discrete energy spectrum. Here, we show that a quantum dot coupled with two superconducting leads can realize a nontrivial zero-dimensional topological superconductor with broken time-reversal symmetry, which corresponds to the finite size limit of the one-dimensional topological superconductor. Topological phase transitions corresponds to a change of the fermion parity, and to the pr","authors_text":"Alessandro Braggio, Pasquale Marra, Roberta Citro","cross_cats":["cond-mat.supr-con","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-04-17T18:00:06Z","title":"Zero-dimensional topologically nontrivial state in a superconducting quantum dot"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.06415","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:aadf016845ec1bf8794db8b47bb9924bc1343b68d8ba744673802ef3f3e951fa","target":"record","created_at":"2026-05-18T00:13:50Z","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":"44548c151da045f013cbe4625e3d1d17b66ed2da080540bdd0bb713a4380d1f2","cross_cats_sorted":["cond-mat.supr-con","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-04-17T18:00:06Z","title_canon_sha256":"77db8f4a7362d4395be34c29a4cb5ea534b64529613ea3f6c359f8187935c82b"},"schema_version":"1.0","source":{"id":"1804.06415","kind":"arxiv","version":2}},"canonical_sha256":"3728c1c52f8c7f28c0d8f4423a756ac19ea799aecec93ec84b306eeb5d50d91a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3728c1c52f8c7f28c0d8f4423a756ac19ea799aecec93ec84b306eeb5d50d91a","first_computed_at":"2026-05-18T00:13:50.519668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:13:50.519668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z/HWDn+R58/2D2Fok6OX0yonbVTdgA85vO8yx76KrD01BFn4V9nh7heoioXbegMxugHqnlkPydOH03UtfsrQCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:13:50.520497Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.06415","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aadf016845ec1bf8794db8b47bb9924bc1343b68d8ba744673802ef3f3e951fa","sha256:c3f36d51f03a1d8192675ea9e8dd9e54b3bcdc41aaccf770c642e33cbb0456a1"],"state_sha256":"80e6c229f703eeb17628402bf6739b485f90d62f295bdf20c2271afe7ba19439"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qRw/OpuPsxUl213hknlfRd6nr10zg+vIe+qCRRx3DWfOYbFrs8ym43WhgvsPv9zAA4D02pVEEungsS22O9RYBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T00:37:35.349641Z","bundle_sha256":"8b252bba62989f757dffe92ac2781ab79575d680f3d81a1b52973f743a3c02ed"}}