{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:XUUMGOLA3S5VQAM4W4BAZHLCMU","short_pith_number":"pith:XUUMGOLA","canonical_record":{"source":{"id":"2504.06898","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-04-09T13:57:26Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"368798cf0b40028081d33159fedc2809cbaf8514440e50e23ec25ff9a745192a","abstract_canon_sha256":"faf07baa31f9a611d3b17662c459fb60479b4dc6d31b163d2822204173b17311"},"schema_version":"1.0"},"canonical_sha256":"bd28c33960dcbb58019cb7020c9d626534aa1ea24eee5e8e05acfba134f2b208","source":{"kind":"arxiv","id":"2504.06898","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.06898","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"arxiv_version","alias_value":"2504.06898v1","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.06898","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"pith_short_12","alias_value":"XUUMGOLA3S5V","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"pith_short_16","alias_value":"XUUMGOLA3S5VQAM4","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"pith_short_8","alias_value":"XUUMGOLA","created_at":"2026-07-05T10:46:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:XUUMGOLA3S5VQAM4W4BAZHLCMU","target":"record","payload":{"canonical_record":{"source":{"id":"2504.06898","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-04-09T13:57:26Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"368798cf0b40028081d33159fedc2809cbaf8514440e50e23ec25ff9a745192a","abstract_canon_sha256":"faf07baa31f9a611d3b17662c459fb60479b4dc6d31b163d2822204173b17311"},"schema_version":"1.0"},"canonical_sha256":"bd28c33960dcbb58019cb7020c9d626534aa1ea24eee5e8e05acfba134f2b208","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:46:48.375399Z","signature_b64":"NaOXSgDP4q1rhL6WxkuPrLrfW0BlKrfL2+zj6uXVN5NznwiwXS7TaXmIaNVmBUQA5+Vn5V5vqcac1rjWnCGhCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd28c33960dcbb58019cb7020c9d626534aa1ea24eee5e8e05acfba134f2b208","last_reissued_at":"2026-07-05T10:46:48.374917Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:46:48.374917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.06898","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T10:46:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fWesMvyJ8QR9UBFCK1L3JUO1NQMkUrJQiUjXRNvj68+nd/HnJmO70osxyHT1n5x1tnJWWhGZGDV7dZI0pVZECg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:40:55.058266Z"},"content_sha256":"b0062b95aeb8564498c562dfd72188b8f22d6d4c91120404c6f962fdd14f4726","schema_version":"1.0","event_id":"sha256:b0062b95aeb8564498c562dfd72188b8f22d6d4c91120404c6f962fdd14f4726"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:XUUMGOLA3S5VQAM4W4BAZHLCMU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Identifying and mitigating errors in hole spin qubit readout","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexei Orekhov, Andreas Fuhrer, Bence Het\\'enyi, Cornelius Carlsson, Eoin Gerard Kelly, Felix J. Schupp, Gian Salis, Inga Seidler, Konstantinos Tsoukalas, Leonardo Massai, Lisa Sommer, Marta Pita-Vidal, Matthias Mergenthaler, Michele Aldeghi, Patrick Harvey-Collard, Stephan Paredes, Stephen W. Bedell","submitted_at":"2025-04-09T13:57:26Z","abstract_excerpt":"High-fidelity readout of spin qubits in semiconductor quantum dots can be achieved by combining a radio-frequency (RF) charge sensor together with spin-to-charge conversion and Pauli spin blockade. However, reaching high readout fidelities in hole spin qubits remains elusive and is complicated by a combination of site-dependent spin anisotropies and short spin relaxation times. Here, we analyze the different error processes that arise during readout using a double-latched scheme in a germanium double quantum dot hole spin qubit system. We first investigate the spin-to-charge conversion process"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.06898","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.06898/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:46:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9cD1WREpvULWqdSBktFDX2JGc97L4+6kFgFRX8be+4/KgUK2jptYH/5VwVDhmuGexFR+2nPsSnqFaXNod1rqAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T04:40:55.058945Z"},"content_sha256":"a04e5db121beec3da901348d18f5627dea328cb956ab91c2d66e13ab38213f70","schema_version":"1.0","event_id":"sha256:a04e5db121beec3da901348d18f5627dea328cb956ab91c2d66e13ab38213f70"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU/bundle.json","state_url":"https://pith.science/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU/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":"2026-07-07T04:40:55Z","links":{"resolver":"https://pith.science/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU","bundle":"https://pith.science/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU/bundle.json","state":"https://pith.science/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XUUMGOLA3S5VQAM4W4BAZHLCMU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:XUUMGOLA3S5VQAM4W4BAZHLCMU","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":"faf07baa31f9a611d3b17662c459fb60479b4dc6d31b163d2822204173b17311","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-04-09T13:57:26Z","title_canon_sha256":"368798cf0b40028081d33159fedc2809cbaf8514440e50e23ec25ff9a745192a"},"schema_version":"1.0","source":{"id":"2504.06898","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.06898","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"arxiv_version","alias_value":"2504.06898v1","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.06898","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"pith_short_12","alias_value":"XUUMGOLA3S5V","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"pith_short_16","alias_value":"XUUMGOLA3S5VQAM4","created_at":"2026-07-05T10:46:48Z"},{"alias_kind":"pith_short_8","alias_value":"XUUMGOLA","created_at":"2026-07-05T10:46:48Z"}],"graph_snapshots":[{"event_id":"sha256:a04e5db121beec3da901348d18f5627dea328cb956ab91c2d66e13ab38213f70","target":"graph","created_at":"2026-07-05T10:46:48Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2504.06898/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-fidelity readout of spin qubits in semiconductor quantum dots can be achieved by combining a radio-frequency (RF) charge sensor together with spin-to-charge conversion and Pauli spin blockade. However, reaching high readout fidelities in hole spin qubits remains elusive and is complicated by a combination of site-dependent spin anisotropies and short spin relaxation times. Here, we analyze the different error processes that arise during readout using a double-latched scheme in a germanium double quantum dot hole spin qubit system. We first investigate the spin-to-charge conversion process","authors_text":"Alexei Orekhov, Andreas Fuhrer, Bence Het\\'enyi, Cornelius Carlsson, Eoin Gerard Kelly, Felix J. Schupp, Gian Salis, Inga Seidler, Konstantinos Tsoukalas, Leonardo Massai, Lisa Sommer, Marta Pita-Vidal, Matthias Mergenthaler, Michele Aldeghi, Patrick Harvey-Collard, Stephan Paredes, Stephen W. Bedell","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-04-09T13:57:26Z","title":"Identifying and mitigating errors in hole spin qubit readout"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.06898","kind":"arxiv","version":1},"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:b0062b95aeb8564498c562dfd72188b8f22d6d4c91120404c6f962fdd14f4726","target":"record","created_at":"2026-07-05T10:46:48Z","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":"faf07baa31f9a611d3b17662c459fb60479b4dc6d31b163d2822204173b17311","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2025-04-09T13:57:26Z","title_canon_sha256":"368798cf0b40028081d33159fedc2809cbaf8514440e50e23ec25ff9a745192a"},"schema_version":"1.0","source":{"id":"2504.06898","kind":"arxiv","version":1}},"canonical_sha256":"bd28c33960dcbb58019cb7020c9d626534aa1ea24eee5e8e05acfba134f2b208","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd28c33960dcbb58019cb7020c9d626534aa1ea24eee5e8e05acfba134f2b208","first_computed_at":"2026-07-05T10:46:48.374917Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:46:48.374917Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NaOXSgDP4q1rhL6WxkuPrLrfW0BlKrfL2+zj6uXVN5NznwiwXS7TaXmIaNVmBUQA5+Vn5V5vqcac1rjWnCGhCg==","signature_status":"signed_v1","signed_at":"2026-07-05T10:46:48.375399Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.06898","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0062b95aeb8564498c562dfd72188b8f22d6d4c91120404c6f962fdd14f4726","sha256:a04e5db121beec3da901348d18f5627dea328cb956ab91c2d66e13ab38213f70"],"state_sha256":"464469e34eda2b857077edeb2601efae5dfd816b44bc55ec9edc918f4f176375"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tvQNu6IZELfwiTisZefqBgIGsOqNYpGTw71Vg0/QErNB/lyi6EwBNjdR5UR5K84bGh4dDJBJLOUyH5YFgozUAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T04:40:55.063260Z","bundle_sha256":"0751543e628f2262c1648ee3a6e0c65a008bbf5cc7b3d9d21dfbc197366105b9"}}