{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FAQSB4GLLNCCBM4XIJG4LZ7IBF","short_pith_number":"pith:FAQSB4GL","canonical_record":{"source":{"id":"1312.5064","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-12-18T08:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"a6dcc8bec0b3a4496754014285a0885ee206d159502fc75401c836c18728d685","abstract_canon_sha256":"a5db0b337d06df70ad021245a94ebb0b25b4bd2dcfebdad0c16b2737df3c9792"},"schema_version":"1.0"},"canonical_sha256":"282120f0cb5b4420b397424dc5e7e80950b65dd4ad7eee5a9b1f0e611b861dde","source":{"kind":"arxiv","id":"1312.5064","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.5064","created_at":"2026-05-18T01:32:19Z"},{"alias_kind":"arxiv_version","alias_value":"1312.5064v1","created_at":"2026-05-18T01:32:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.5064","created_at":"2026-05-18T01:32:19Z"},{"alias_kind":"pith_short_12","alias_value":"FAQSB4GLLNCC","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FAQSB4GLLNCCBM4X","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FAQSB4GL","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FAQSB4GLLNCCBM4XIJG4LZ7IBF","target":"record","payload":{"canonical_record":{"source":{"id":"1312.5064","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-12-18T08:59:59Z","cross_cats_sorted":[],"title_canon_sha256":"a6dcc8bec0b3a4496754014285a0885ee206d159502fc75401c836c18728d685","abstract_canon_sha256":"a5db0b337d06df70ad021245a94ebb0b25b4bd2dcfebdad0c16b2737df3c9792"},"schema_version":"1.0"},"canonical_sha256":"282120f0cb5b4420b397424dc5e7e80950b65dd4ad7eee5a9b1f0e611b861dde","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:32:19.146200Z","signature_b64":"JQChiC/J+/h9UdGk8QSjZDfKM3zUOedgkowSjMn6+fXZjb0WtU6/VODvvT3V1eILMEvqr8qOKvshFQrVaAhNBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"282120f0cb5b4420b397424dc5e7e80950b65dd4ad7eee5a9b1f0e611b861dde","last_reissued_at":"2026-05-18T01:32:19.145471Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:32:19.145471Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.5064","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":"2026-05-18T01:32:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R8t9BeUzV2Hpca017adtpDTtWA8YhRAFvQ4A4yJkQdGT3ZJxf3TFU3xUQbpt3CHdTCid4aXUBZZZ+nVf5fH9Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:18:52.065161Z"},"content_sha256":"946ebe7e62aeae2fae42f5ead4c775a009afccd7d11512b3bef9d22dc0fdc1ed","schema_version":"1.0","event_id":"sha256:946ebe7e62aeae2fae42f5ead4c775a009afccd7d11512b3bef9d22dc0fdc1ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FAQSB4GLLNCCBM4XIJG4LZ7IBF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Frequency Multiplexing for Readout of Spin Qubits","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. C. Gossard, A. C. Mahoney, D. J. Reilly, H. Lu, J. I. Colless, J. M. Hornibrook, S. Blanvillain, X. G. Croot","submitted_at":"2013-12-18T08:59:59Z","abstract_excerpt":"We demonstrate a low loss, chip-level frequency multiplexing scheme for readout of scaled-up spin qubit devices. By integrating separate bias tees and resonator circuits on-chip for each readout channel, we realize dispersive gate-sensing in combination with charge detection based on two rf quantum point contacts (rf-QPCs). We apply this approach to perform multiplexed readout of a double quantum dot in the few-electron regime, and further demonstrate operation of a 10-channel multiplexing device. Limitations for scaling spin qubit readout to large numbers of multiplexed channels is discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.5064","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":""},"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":"2026-05-18T01:32:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mciOYWovNfTtHonQFkVUc2hhtGeqXgSregNjhvjiRkOu8dLX8/bfVDekF9vgsRK00kLvtQzQvy181rWWLm9ODQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:18:52.065778Z"},"content_sha256":"09ed35b55fe441fa0864b6eb4df1b9740d661df30d79b828bb83a2ff8c09365a","schema_version":"1.0","event_id":"sha256:09ed35b55fe441fa0864b6eb4df1b9740d661df30d79b828bb83a2ff8c09365a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF/bundle.json","state_url":"https://pith.science/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF/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":"2026-06-04T08:18:52Z","links":{"resolver":"https://pith.science/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF","bundle":"https://pith.science/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF/bundle.json","state":"https://pith.science/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FAQSB4GLLNCCBM4XIJG4LZ7IBF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FAQSB4GLLNCCBM4XIJG4LZ7IBF","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":"a5db0b337d06df70ad021245a94ebb0b25b4bd2dcfebdad0c16b2737df3c9792","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-12-18T08:59:59Z","title_canon_sha256":"a6dcc8bec0b3a4496754014285a0885ee206d159502fc75401c836c18728d685"},"schema_version":"1.0","source":{"id":"1312.5064","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.5064","created_at":"2026-05-18T01:32:19Z"},{"alias_kind":"arxiv_version","alias_value":"1312.5064v1","created_at":"2026-05-18T01:32:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.5064","created_at":"2026-05-18T01:32:19Z"},{"alias_kind":"pith_short_12","alias_value":"FAQSB4GLLNCC","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FAQSB4GLLNCCBM4X","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FAQSB4GL","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:09ed35b55fe441fa0864b6eb4df1b9740d661df30d79b828bb83a2ff8c09365a","target":"graph","created_at":"2026-05-18T01:32:19Z","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 demonstrate a low loss, chip-level frequency multiplexing scheme for readout of scaled-up spin qubit devices. By integrating separate bias tees and resonator circuits on-chip for each readout channel, we realize dispersive gate-sensing in combination with charge detection based on two rf quantum point contacts (rf-QPCs). We apply this approach to perform multiplexed readout of a double quantum dot in the few-electron regime, and further demonstrate operation of a 10-channel multiplexing device. Limitations for scaling spin qubit readout to large numbers of multiplexed channels is discussed.","authors_text":"A. C. Gossard, A. C. Mahoney, D. J. Reilly, H. Lu, J. I. Colless, J. M. Hornibrook, S. Blanvillain, X. G. Croot","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-12-18T08:59:59Z","title":"Frequency Multiplexing for Readout of Spin Qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.5064","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":"sha256:946ebe7e62aeae2fae42f5ead4c775a009afccd7d11512b3bef9d22dc0fdc1ed","target":"record","created_at":"2026-05-18T01:32:19Z","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":"a5db0b337d06df70ad021245a94ebb0b25b4bd2dcfebdad0c16b2737df3c9792","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-12-18T08:59:59Z","title_canon_sha256":"a6dcc8bec0b3a4496754014285a0885ee206d159502fc75401c836c18728d685"},"schema_version":"1.0","source":{"id":"1312.5064","kind":"arxiv","version":1}},"canonical_sha256":"282120f0cb5b4420b397424dc5e7e80950b65dd4ad7eee5a9b1f0e611b861dde","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"282120f0cb5b4420b397424dc5e7e80950b65dd4ad7eee5a9b1f0e611b861dde","first_computed_at":"2026-05-18T01:32:19.145471Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:32:19.145471Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JQChiC/J+/h9UdGk8QSjZDfKM3zUOedgkowSjMn6+fXZjb0WtU6/VODvvT3V1eILMEvqr8qOKvshFQrVaAhNBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:32:19.146200Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.5064","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:946ebe7e62aeae2fae42f5ead4c775a009afccd7d11512b3bef9d22dc0fdc1ed","sha256:09ed35b55fe441fa0864b6eb4df1b9740d661df30d79b828bb83a2ff8c09365a"],"state_sha256":"c13f8025fd3bdd1e9992e0893c8398b650bae04982bf5c389f8416e6e5e7f980"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UjVslQgZEV6/2BD6ABy4I8RkUlhnfC7vvY1IGFGKFKUY+SMhACyxI7Wz5ouhJ838biXCGOw6aoO8itMBBRK9Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T08:18:52.068788Z","bundle_sha256":"da9426a0a91e11feaf293bd8a3cf9c9bb14b7264e4cd708d47ff6b95972f52d4"}}