{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:JZ5VUDOKPHHSFHI7WGIKCTC3EY","short_pith_number":"pith:JZ5VUDOK","canonical_record":{"source":{"id":"0911.5320","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-27T18:01:03Z","cross_cats_sorted":[],"title_canon_sha256":"ea880ae2070124f28d20559bb38ddb352a06830da3444f54cbc60f22e53ccf5d","abstract_canon_sha256":"247e6aec130a1fbf15b2c690322fffa1c6cb918f71aff63879553b1fe8b2c033"},"schema_version":"1.0"},"canonical_sha256":"4e7b5a0dca79cf229d1fb190a14c5b261276889d791bd19c8fecc72810777ea7","source":{"kind":"arxiv","id":"0911.5320","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.5320","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"arxiv_version","alias_value":"0911.5320v4","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.5320","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"pith_short_12","alias_value":"JZ5VUDOKPHHS","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"pith_short_16","alias_value":"JZ5VUDOKPHHSFHI7","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"pith_short_8","alias_value":"JZ5VUDOK","created_at":"2026-07-04T17:29:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:JZ5VUDOKPHHSFHI7WGIKCTC3EY","target":"record","payload":{"canonical_record":{"source":{"id":"0911.5320","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-27T18:01:03Z","cross_cats_sorted":[],"title_canon_sha256":"ea880ae2070124f28d20559bb38ddb352a06830da3444f54cbc60f22e53ccf5d","abstract_canon_sha256":"247e6aec130a1fbf15b2c690322fffa1c6cb918f71aff63879553b1fe8b2c033"},"schema_version":"1.0"},"canonical_sha256":"4e7b5a0dca79cf229d1fb190a14c5b261276889d791bd19c8fecc72810777ea7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:29:03.745369Z","signature_b64":"p32CjgMl1QXAR+Yr7a0C4iE7ss6hwYT39BiDzZuQqO6jRYZ0yhc9/ulsVmFQtXlUe4paB+ugBy3m6SydSZ03Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e7b5a0dca79cf229d1fb190a14c5b261276889d791bd19c8fecc72810777ea7","last_reissued_at":"2026-07-04T17:29:03.744947Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:29:03.744947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.5320","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T17:29:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"swyIwLFtpoM9Wb67v3NrYB1yENwbmZsrfG3EeC6BknCne18SmnDgdqlEKlhk6d2qB+210N9RAw30wAuHgZDhAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:12:53.964084Z"},"content_sha256":"53b2213588708414b3f24511d6a79cb94acbe00224392fffcf648f8aa17e635c","schema_version":"1.0","event_id":"sha256:53b2213588708414b3f24511d6a79cb94acbe00224392fffcf648f8aa17e635c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:JZ5VUDOKPHHSFHI7WGIKCTC3EY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entangling remote nuclear spins linked by a chromophore","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Arzhang Ardavan, Brendon W. Lovett, Erik M. Gauger, Feliciano Giustino, G. Andrew D. Briggs, Harry L. Anderson, John J. L. Morton, Kevin B. Henbest, Kiminori Maeda, Marcus Schaffry, Simon C. Benjamin, Steven D. Karlen, Vasileia Filidou","submitted_at":"2009-11-27T18:01:03Z","abstract_excerpt":"Molecular nanostructures may constitute the fabric of future quantum technologies, if their degrees of freedom can be fully harnessed. Ideally one might use nuclear spins as low-decoherence qubits and optical excitations for fast controllable interactions. Here, we present a method for entangling two nuclear spins through their mutual coupling to a transient optically-excited electron spin, and investigate its feasibility through density functional theory and experiments on a test molecule. From our calculations we identify the specific molecular properties that permit high entangling power ga"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.5320","kind":"arxiv","version":4},"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/0911.5320/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":"2026-07-04T17:29:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kELsWiPzkxEOusd9wWjiYXXXALPh7/2y6T2Fghdt2ekf80koZMd8yG3q00scmt5RUUV72LE7mSyOC4kbiau5Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T15:12:53.964474Z"},"content_sha256":"dad25f08528decf489eb95371c2d35cd3b03a720be02b07f0b60e5f16e52e288","schema_version":"1.0","event_id":"sha256:dad25f08528decf489eb95371c2d35cd3b03a720be02b07f0b60e5f16e52e288"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY/bundle.json","state_url":"https://pith.science/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY/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":"2026-07-07T15:12:53Z","links":{"resolver":"https://pith.science/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY","bundle":"https://pith.science/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY/bundle.json","state":"https://pith.science/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JZ5VUDOKPHHSFHI7WGIKCTC3EY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:JZ5VUDOKPHHSFHI7WGIKCTC3EY","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":"247e6aec130a1fbf15b2c690322fffa1c6cb918f71aff63879553b1fe8b2c033","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-27T18:01:03Z","title_canon_sha256":"ea880ae2070124f28d20559bb38ddb352a06830da3444f54cbc60f22e53ccf5d"},"schema_version":"1.0","source":{"id":"0911.5320","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.5320","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"arxiv_version","alias_value":"0911.5320v4","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.5320","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"pith_short_12","alias_value":"JZ5VUDOKPHHS","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"pith_short_16","alias_value":"JZ5VUDOKPHHSFHI7","created_at":"2026-07-04T17:29:03Z"},{"alias_kind":"pith_short_8","alias_value":"JZ5VUDOK","created_at":"2026-07-04T17:29:03Z"}],"graph_snapshots":[{"event_id":"sha256:dad25f08528decf489eb95371c2d35cd3b03a720be02b07f0b60e5f16e52e288","target":"graph","created_at":"2026-07-04T17:29:03Z","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/0911.5320/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Molecular nanostructures may constitute the fabric of future quantum technologies, if their degrees of freedom can be fully harnessed. Ideally one might use nuclear spins as low-decoherence qubits and optical excitations for fast controllable interactions. Here, we present a method for entangling two nuclear spins through their mutual coupling to a transient optically-excited electron spin, and investigate its feasibility through density functional theory and experiments on a test molecule. From our calculations we identify the specific molecular properties that permit high entangling power ga","authors_text":"Arzhang Ardavan, Brendon W. Lovett, Erik M. Gauger, Feliciano Giustino, G. Andrew D. Briggs, Harry L. Anderson, John J. L. Morton, Kevin B. Henbest, Kiminori Maeda, Marcus Schaffry, Simon C. Benjamin, Steven D. Karlen, Vasileia Filidou","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-27T18:01:03Z","title":"Entangling remote nuclear spins linked by a chromophore"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.5320","kind":"arxiv","version":4},"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":"sha256:53b2213588708414b3f24511d6a79cb94acbe00224392fffcf648f8aa17e635c","target":"record","created_at":"2026-07-04T17:29:03Z","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":"247e6aec130a1fbf15b2c690322fffa1c6cb918f71aff63879553b1fe8b2c033","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-27T18:01:03Z","title_canon_sha256":"ea880ae2070124f28d20559bb38ddb352a06830da3444f54cbc60f22e53ccf5d"},"schema_version":"1.0","source":{"id":"0911.5320","kind":"arxiv","version":4}},"canonical_sha256":"4e7b5a0dca79cf229d1fb190a14c5b261276889d791bd19c8fecc72810777ea7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4e7b5a0dca79cf229d1fb190a14c5b261276889d791bd19c8fecc72810777ea7","first_computed_at":"2026-07-04T17:29:03.744947Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:29:03.744947Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p32CjgMl1QXAR+Yr7a0C4iE7ss6hwYT39BiDzZuQqO6jRYZ0yhc9/ulsVmFQtXlUe4paB+ugBy3m6SydSZ03Cg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:29:03.745369Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.5320","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:53b2213588708414b3f24511d6a79cb94acbe00224392fffcf648f8aa17e635c","sha256:dad25f08528decf489eb95371c2d35cd3b03a720be02b07f0b60e5f16e52e288"],"state_sha256":"adb9d49689a53977e7b865c794ffb2a9a43e5fa061be52963bbc9b6042d72cbd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZndL4QXFDHGlA+4qgQKJT/Kw7UT2lhCNrFQG0EmUmODgiwMUoVa89DPUhZva5LCuXAd5O1Ys67c2B7W6TOnqBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T15:12:53.966543Z","bundle_sha256":"33947a646809659e3b7006c4fd2f67b0b47b3fcf1c322ba76bd6c33c751a5520"}}