{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:FC3PD7PDVNHE2DZLDW4QCTCAV7","short_pith_number":"pith:FC3PD7PD","canonical_record":{"source":{"id":"1708.09414","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-30T18:20:31Z","cross_cats_sorted":[],"title_canon_sha256":"1abb63994fbc90241fea2658c359e45dfff269e351f97c14b0524ff3f23d50c9","abstract_canon_sha256":"7abe4f9df9958467cbf6a845564fdf27c3b410c6d0de7796412aadfb30702dcc"},"schema_version":"1.0"},"canonical_sha256":"28b6f1fde3ab4e4d0f2b1db9014c40afdb07e59674b2f12f9c3ccba2d250e8e5","source":{"kind":"arxiv","id":"1708.09414","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09414","created_at":"2026-05-18T00:05:00Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09414v2","created_at":"2026-05-18T00:05:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09414","created_at":"2026-05-18T00:05:00Z"},{"alias_kind":"pith_short_12","alias_value":"FC3PD7PDVNHE","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FC3PD7PDVNHE2DZL","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FC3PD7PD","created_at":"2026-05-18T12:31:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:FC3PD7PDVNHE2DZLDW4QCTCAV7","target":"record","payload":{"canonical_record":{"source":{"id":"1708.09414","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-30T18:20:31Z","cross_cats_sorted":[],"title_canon_sha256":"1abb63994fbc90241fea2658c359e45dfff269e351f97c14b0524ff3f23d50c9","abstract_canon_sha256":"7abe4f9df9958467cbf6a845564fdf27c3b410c6d0de7796412aadfb30702dcc"},"schema_version":"1.0"},"canonical_sha256":"28b6f1fde3ab4e4d0f2b1db9014c40afdb07e59674b2f12f9c3ccba2d250e8e5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:00.408497Z","signature_b64":"Cd7mtAKflBjw3Yp3s/eQhWC3owqaaa2elFK0fKFeup9mtg7VAziQwrLupF4sKqOGJicDCk/O8I8i6OmjhewICg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"28b6f1fde3ab4e4d0f2b1db9014c40afdb07e59674b2f12f9c3ccba2d250e8e5","last_reissued_at":"2026-05-18T00:05:00.408080Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:00.408080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.09414","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":"2026-05-18T00:05:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F9sYcIHg2uVJKjP8VLuuSMj2gV2OCKmFDHq7VsSMIoqGydqqO07SseNFajWBr/MsJUAuYl0rZ8ExvoXsQWisDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T05:24:58.686711Z"},"content_sha256":"925c68fc7ad624875fb0c0929168a3cf8cf4d4d51cf5aff53bf4b8ab25553be1","schema_version":"1.0","event_id":"sha256:925c68fc7ad624875fb0c0929168a3cf8cf4d4d51cf5aff53bf4b8ab25553be1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:FC3PD7PDVNHE2DZLDW4QCTCAV7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Noise-resilient architecture of a hybrid electron-nuclear quantum register in diamond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jorge Casanova, Martin B. Plenio, Michael A. Perlin, Zhen-Yu Wang","submitted_at":"2017-08-30T18:20:31Z","abstract_excerpt":"A hybrid quantum register consisting of nuclear spins in a solid-state platform coupled to a central electron spin is expected to combine the advantages of its elements. However, the potential to exploit long nuclear spin coherence times is severely limited by magnetic noise from the central electron spin during external interrogation. We overcome this obstacle and present protocols for addressing a decoherence-free nuclear spin subspace, which was not accessible by previously existing methods. We demonstrate the efficacy of our protocols using detailed numerical simulations of a nitrogen-vaca"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09414","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":"2026-05-18T00:05:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PmbgTNaXY32xIX3jAiXV2DbjSE1ybanekOGRV6JYvUIY/TbkuvbKJEut72jQzLsv9KIAp9imQi5YnfXjbR9QDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T05:24:58.687463Z"},"content_sha256":"39acfeef6b89a465d4f2df7d2400ee93b0561ad3c7232d7f4962dbc670aea330","schema_version":"1.0","event_id":"sha256:39acfeef6b89a465d4f2df7d2400ee93b0561ad3c7232d7f4962dbc670aea330"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7/bundle.json","state_url":"https://pith.science/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7/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":"2026-06-06T05:24:58Z","links":{"resolver":"https://pith.science/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7","bundle":"https://pith.science/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7/bundle.json","state":"https://pith.science/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FC3PD7PDVNHE2DZLDW4QCTCAV7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:FC3PD7PDVNHE2DZLDW4QCTCAV7","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":"7abe4f9df9958467cbf6a845564fdf27c3b410c6d0de7796412aadfb30702dcc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-30T18:20:31Z","title_canon_sha256":"1abb63994fbc90241fea2658c359e45dfff269e351f97c14b0524ff3f23d50c9"},"schema_version":"1.0","source":{"id":"1708.09414","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.09414","created_at":"2026-05-18T00:05:00Z"},{"alias_kind":"arxiv_version","alias_value":"1708.09414v2","created_at":"2026-05-18T00:05:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.09414","created_at":"2026-05-18T00:05:00Z"},{"alias_kind":"pith_short_12","alias_value":"FC3PD7PDVNHE","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_16","alias_value":"FC3PD7PDVNHE2DZL","created_at":"2026-05-18T12:31:15Z"},{"alias_kind":"pith_short_8","alias_value":"FC3PD7PD","created_at":"2026-05-18T12:31:15Z"}],"graph_snapshots":[{"event_id":"sha256:39acfeef6b89a465d4f2df7d2400ee93b0561ad3c7232d7f4962dbc670aea330","target":"graph","created_at":"2026-05-18T00:05:00Z","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":"A hybrid quantum register consisting of nuclear spins in a solid-state platform coupled to a central electron spin is expected to combine the advantages of its elements. However, the potential to exploit long nuclear spin coherence times is severely limited by magnetic noise from the central electron spin during external interrogation. We overcome this obstacle and present protocols for addressing a decoherence-free nuclear spin subspace, which was not accessible by previously existing methods. We demonstrate the efficacy of our protocols using detailed numerical simulations of a nitrogen-vaca","authors_text":"Jorge Casanova, Martin B. Plenio, Michael A. Perlin, Zhen-Yu Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-30T18:20:31Z","title":"Noise-resilient architecture of a hybrid electron-nuclear quantum register in diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.09414","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":"sha256:925c68fc7ad624875fb0c0929168a3cf8cf4d4d51cf5aff53bf4b8ab25553be1","target":"record","created_at":"2026-05-18T00:05:00Z","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":"7abe4f9df9958467cbf6a845564fdf27c3b410c6d0de7796412aadfb30702dcc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-30T18:20:31Z","title_canon_sha256":"1abb63994fbc90241fea2658c359e45dfff269e351f97c14b0524ff3f23d50c9"},"schema_version":"1.0","source":{"id":"1708.09414","kind":"arxiv","version":2}},"canonical_sha256":"28b6f1fde3ab4e4d0f2b1db9014c40afdb07e59674b2f12f9c3ccba2d250e8e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28b6f1fde3ab4e4d0f2b1db9014c40afdb07e59674b2f12f9c3ccba2d250e8e5","first_computed_at":"2026-05-18T00:05:00.408080Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:05:00.408080Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Cd7mtAKflBjw3Yp3s/eQhWC3owqaaa2elFK0fKFeup9mtg7VAziQwrLupF4sKqOGJicDCk/O8I8i6OmjhewICg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:05:00.408497Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.09414","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:925c68fc7ad624875fb0c0929168a3cf8cf4d4d51cf5aff53bf4b8ab25553be1","sha256:39acfeef6b89a465d4f2df7d2400ee93b0561ad3c7232d7f4962dbc670aea330"],"state_sha256":"26903057f082a5d6b6bbd3e24acfa2d09a1417db5ae8f820c8148a75ce1be211"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xuMJ4d8deevt2s50Pc661xKinfZPPxJuSLVDIrrq79AOnaHo9yngSHjbLzPJdoovtLL0F6SIIEOEI1FHyt2lBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T05:24:58.691395Z","bundle_sha256":"5f4b4d7c9cee7650f2c91d8d38603e04fe02f0d6acb9f93f448f32ff3dc70c85"}}