{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:6WB5F6LM3XKMHRCUJ6IV6WMZEX","short_pith_number":"pith:6WB5F6LM","canonical_record":{"source":{"id":"1701.01855","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-07T16:34:33Z","cross_cats_sorted":[],"title_canon_sha256":"ebdc24e41acef5578603878063e74e27a290d05373c0477575eb88bd7330c29b","abstract_canon_sha256":"4565402ffa0f2d17cef78e865dd3b076adf13b42a517deb3b834dbfc9bb97a65"},"schema_version":"1.0"},"canonical_sha256":"f583d2f96cddd4c3c4544f915f599925ed83ebac5baec0ba13ded2750a369f7b","source":{"kind":"arxiv","id":"1701.01855","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01855","created_at":"2026-05-18T00:45:01Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01855v2","created_at":"2026-05-18T00:45:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01855","created_at":"2026-05-18T00:45:01Z"},{"alias_kind":"pith_short_12","alias_value":"6WB5F6LM3XKM","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6WB5F6LM3XKMHRCU","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6WB5F6LM","created_at":"2026-05-18T12:31:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:6WB5F6LM3XKMHRCUJ6IV6WMZEX","target":"record","payload":{"canonical_record":{"source":{"id":"1701.01855","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-07T16:34:33Z","cross_cats_sorted":[],"title_canon_sha256":"ebdc24e41acef5578603878063e74e27a290d05373c0477575eb88bd7330c29b","abstract_canon_sha256":"4565402ffa0f2d17cef78e865dd3b076adf13b42a517deb3b834dbfc9bb97a65"},"schema_version":"1.0"},"canonical_sha256":"f583d2f96cddd4c3c4544f915f599925ed83ebac5baec0ba13ded2750a369f7b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:01.343465Z","signature_b64":"1qXOcH1WW2L1jVIctSCkPukg6KgF5TAW1slVbhO4ezXLBOF1UmYT0Uo8JPk8XevKasNeVUYIMhNzhQr606SzDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f583d2f96cddd4c3c4544f915f599925ed83ebac5baec0ba13ded2750a369f7b","last_reissued_at":"2026-05-18T00:45:01.342882Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:01.342882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1701.01855","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":"2026-05-18T00:45:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EIQNraCgsfmIQPDsBdXjKU9trPh4JidxdKoenSRxGdfiegdq7zGLTNLIB07kVuyBMwTEjVIxNaHy/hxtAozsBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:31:57.077148Z"},"content_sha256":"30307be297750eee574ef84d75b5a71a0e4cd8691a351de4ed2302983d02bb40","schema_version":"1.0","event_id":"sha256:30307be297750eee574ef84d75b5a71a0e4cd8691a351de4ed2302983d02bb40"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:6WB5F6LM3XKMHRCUJ6IV6WMZEX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectrum of the Nuclear Environment for GaAs Spin Qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Charles M. Marcus, Ferdinand Kuemmeth, Filip K. Malinowski, Frederico Martins, Geoffrey C. Gardner, {\\L}ukasz Cywi\\'nski, Mark S. Rudner, Michael J. Manfra, Peter D. Nissen, Saeed Fallahi","submitted_at":"2017-01-07T16:34:33Z","abstract_excerpt":"Using a singlet-triplet spin qubit as a sensitive spectrometer of the GaAs nuclear spin bath, we demonstrate that the spectrum of Overhauser noise agrees with a classical spin diffusion model over six orders of magnitude in frequency, from 1 mHz to 1 kHz, is flat below 10 mHz, and falls as $1/f^2$ for frequency $f \\! \\gtrsim \\! 1$ Hz. Increasing the applied magnetic field from 0.1 T to 0.75 T suppresses electron-mediated spin diffusion, which decreases spectral content in the $1/f^2$ region and lowers the saturation frequency, each by an order of magnitude, consistent with a numerical model. S"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01855","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":"2026-05-18T00:45:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jBxB4i745xlzyNzN+fa835KN7oG7vSvaPCZfG+RBG5PB+wF4k+yypY4BzDHrPAA8ssndEsHcoyYF7oPgJ7OQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T04:31:57.077531Z"},"content_sha256":"7993af8280e8c537b60e9b6e91b505ee40c93b44090780caf170014fbaacac94","schema_version":"1.0","event_id":"sha256:7993af8280e8c537b60e9b6e91b505ee40c93b44090780caf170014fbaacac94"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX/bundle.json","state_url":"https://pith.science/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX/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":"2026-06-01T04:31:57Z","links":{"resolver":"https://pith.science/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX","bundle":"https://pith.science/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX/bundle.json","state":"https://pith.science/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6WB5F6LM3XKMHRCUJ6IV6WMZEX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:6WB5F6LM3XKMHRCUJ6IV6WMZEX","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":"4565402ffa0f2d17cef78e865dd3b076adf13b42a517deb3b834dbfc9bb97a65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-07T16:34:33Z","title_canon_sha256":"ebdc24e41acef5578603878063e74e27a290d05373c0477575eb88bd7330c29b"},"schema_version":"1.0","source":{"id":"1701.01855","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1701.01855","created_at":"2026-05-18T00:45:01Z"},{"alias_kind":"arxiv_version","alias_value":"1701.01855v2","created_at":"2026-05-18T00:45:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1701.01855","created_at":"2026-05-18T00:45:01Z"},{"alias_kind":"pith_short_12","alias_value":"6WB5F6LM3XKM","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_16","alias_value":"6WB5F6LM3XKMHRCU","created_at":"2026-05-18T12:31:03Z"},{"alias_kind":"pith_short_8","alias_value":"6WB5F6LM","created_at":"2026-05-18T12:31:03Z"}],"graph_snapshots":[{"event_id":"sha256:7993af8280e8c537b60e9b6e91b505ee40c93b44090780caf170014fbaacac94","target":"graph","created_at":"2026-05-18T00:45:01Z","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":"Using a singlet-triplet spin qubit as a sensitive spectrometer of the GaAs nuclear spin bath, we demonstrate that the spectrum of Overhauser noise agrees with a classical spin diffusion model over six orders of magnitude in frequency, from 1 mHz to 1 kHz, is flat below 10 mHz, and falls as $1/f^2$ for frequency $f \\! \\gtrsim \\! 1$ Hz. Increasing the applied magnetic field from 0.1 T to 0.75 T suppresses electron-mediated spin diffusion, which decreases spectral content in the $1/f^2$ region and lowers the saturation frequency, each by an order of magnitude, consistent with a numerical model. S","authors_text":"Charles M. Marcus, Ferdinand Kuemmeth, Filip K. Malinowski, Frederico Martins, Geoffrey C. Gardner, {\\L}ukasz Cywi\\'nski, Mark S. Rudner, Michael J. Manfra, Peter D. Nissen, Saeed Fallahi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-07T16:34:33Z","title":"Spectrum of the Nuclear Environment for GaAs Spin Qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1701.01855","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":"sha256:30307be297750eee574ef84d75b5a71a0e4cd8691a351de4ed2302983d02bb40","target":"record","created_at":"2026-05-18T00:45:01Z","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":"4565402ffa0f2d17cef78e865dd3b076adf13b42a517deb3b834dbfc9bb97a65","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-01-07T16:34:33Z","title_canon_sha256":"ebdc24e41acef5578603878063e74e27a290d05373c0477575eb88bd7330c29b"},"schema_version":"1.0","source":{"id":"1701.01855","kind":"arxiv","version":2}},"canonical_sha256":"f583d2f96cddd4c3c4544f915f599925ed83ebac5baec0ba13ded2750a369f7b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f583d2f96cddd4c3c4544f915f599925ed83ebac5baec0ba13ded2750a369f7b","first_computed_at":"2026-05-18T00:45:01.342882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:01.342882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1qXOcH1WW2L1jVIctSCkPukg6KgF5TAW1slVbhO4ezXLBOF1UmYT0Uo8JPk8XevKasNeVUYIMhNzhQr606SzDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:01.343465Z","signed_message":"canonical_sha256_bytes"},"source_id":"1701.01855","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:30307be297750eee574ef84d75b5a71a0e4cd8691a351de4ed2302983d02bb40","sha256:7993af8280e8c537b60e9b6e91b505ee40c93b44090780caf170014fbaacac94"],"state_sha256":"798b6c61760ed126332b4297e1b9bbaf83b11defe5343685addf7a4275836f6c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ac0pmQSiLayFkdVgOTTPjKm0ZDWGPLv101QuDrLzZ0goGNz3K86jZtgZVj0sBkhXWTJV/J6IgqsS38i6zeg+Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T04:31:57.079597Z","bundle_sha256":"189adb0b5a8692bc2ccc645f856a91186f15fc5e545cac1d13122ae49a0ae619"}}