{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:FHGZWKDINPWFRKAW7RVJFRNEMO","short_pith_number":"pith:FHGZWKDI","schema_version":"1.0","canonical_sha256":"29cd9b28686bec58a816fc6a92c5a463bf1221d8e62321b95716edc4ea8d6f85","source":{"kind":"arxiv","id":"2607.24967","version":1},"attestation_state":"computed","paper":{"title":"Spin-cQED with bulk germanium spin qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"A.-F. Kalo, E. A. Rodr\\'iguez-Mena, J. C. Abadillo-Uriel, M. Filippone, Y.-M. Niquet","submitted_at":"2026-07-27T18:17:33Z","abstract_excerpt":"Unstrained bulk germanium is a particularly attractive material for circuit quantum electrodynamics with spins (spin-cQED). We show, through systematic modeling and comparison with state-of-the-art strained germanium heterostructures, that hole spins in bulk germanium double quantum dots readily reach the strong-coupling regime with superconducting microwave resonators, achieving spin-photon coupling strengths $g_s/2\\pi\\gtrsim100$\\,MHz. This enhancement originates from large spin-orbit interactions beyond the perturbative regime. In addition, the coupling is much less sensitive to the orientat"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2607.24967","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-07-27T18:17:33Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"e01395e43a8cbfc69c6a93f37cf86cb4a0cce2eb390800dc24a6be7616f1d1cb","abstract_canon_sha256":"2529760da59ac72b81d4af44ec5c79ee5da4759b0abb84138ed5154e5eea1d3b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-29T00:24:55.546229Z","signature_b64":"cpwPyf6IBWFxAYhq8cVFrPOfyB9Hc4Dp6sFzLHnCEUbNqEMwy6ouwc7Xz6lZ7DpWT5XUQ6fDAcd3kOFKXrs+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"29cd9b28686bec58a816fc6a92c5a463bf1221d8e62321b95716edc4ea8d6f85","last_reissued_at":"2026-07-29T00:24:55.545295Z","signature_status":"signed_v1","first_computed_at":"2026-07-29T00:24:55.545295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin-cQED with bulk germanium spin qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"A.-F. Kalo, E. A. Rodr\\'iguez-Mena, J. C. Abadillo-Uriel, M. Filippone, Y.-M. Niquet","submitted_at":"2026-07-27T18:17:33Z","abstract_excerpt":"Unstrained bulk germanium is a particularly attractive material for circuit quantum electrodynamics with spins (spin-cQED). We show, through systematic modeling and comparison with state-of-the-art strained germanium heterostructures, that hole spins in bulk germanium double quantum dots readily reach the strong-coupling regime with superconducting microwave resonators, achieving spin-photon coupling strengths $g_s/2\\pi\\gtrsim100$\\,MHz. This enhancement originates from large spin-orbit interactions beyond the perturbative regime. In addition, the coupling is much less sensitive to the orientat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.24967","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/2607.24967/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2607.24967","created_at":"2026-07-29T00:24:55.545786+00:00"},{"alias_kind":"arxiv_version","alias_value":"2607.24967v1","created_at":"2026-07-29T00:24:55.545786+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.24967","created_at":"2026-07-29T00:24:55.545786+00:00"},{"alias_kind":"pith_short_12","alias_value":"FHGZWKDINPWF","created_at":"2026-07-29T00:24:55.545786+00:00"},{"alias_kind":"pith_short_16","alias_value":"FHGZWKDINPWFRKAW","created_at":"2026-07-29T00:24:55.545786+00:00"},{"alias_kind":"pith_short_8","alias_value":"FHGZWKDI","created_at":"2026-07-29T00:24:55.545786+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO","json":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO.json","graph_json":"https://pith.science/api/pith-number/FHGZWKDINPWFRKAW7RVJFRNEMO/graph.json","events_json":"https://pith.science/api/pith-number/FHGZWKDINPWFRKAW7RVJFRNEMO/events.json","paper":"https://pith.science/paper/FHGZWKDI"},"agent_actions":{"view_html":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO","download_json":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO.json","view_paper":"https://pith.science/paper/FHGZWKDI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2607.24967&json=true","fetch_graph":"https://pith.science/api/pith-number/FHGZWKDINPWFRKAW7RVJFRNEMO/graph.json","fetch_events":"https://pith.science/api/pith-number/FHGZWKDINPWFRKAW7RVJFRNEMO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO/action/storage_attestation","attest_author":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO/action/author_attestation","sign_citation":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO/action/citation_signature","submit_replication":"https://pith.science/pith/FHGZWKDINPWFRKAW7RVJFRNEMO/action/replication_record"}},"created_at":"2026-07-29T00:24:55.545786+00:00","updated_at":"2026-07-29T00:24:55.545786+00:00"}