{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:CZDFS6FXD43YZ6MXYR4YMF6DNP","short_pith_number":"pith:CZDFS6FX","canonical_record":{"source":{"id":"1402.1709","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-02-07T17:38:56Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"989f7128a3ab809e16e828d422dacaa9b97de9acd55450ec85d7abe778bb7721","abstract_canon_sha256":"4aa89dcfdfc6ddd941e7bfa4dbdc9c8fcb081aed4c63d79755b1b6f612df6f1d"},"schema_version":"1.0"},"canonical_sha256":"16465978b71f378cf997c4798617c36bf1ecc6401dbb6fbc5506008544d97341","source":{"kind":"arxiv","id":"1402.1709","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1709","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1709v1","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1709","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"pith_short_12","alias_value":"CZDFS6FXD43Y","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"CZDFS6FXD43YZ6MX","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"CZDFS6FX","created_at":"2026-05-18T12:28:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:CZDFS6FXD43YZ6MXYR4YMF6DNP","target":"record","payload":{"canonical_record":{"source":{"id":"1402.1709","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-02-07T17:38:56Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"989f7128a3ab809e16e828d422dacaa9b97de9acd55450ec85d7abe778bb7721","abstract_canon_sha256":"4aa89dcfdfc6ddd941e7bfa4dbdc9c8fcb081aed4c63d79755b1b6f612df6f1d"},"schema_version":"1.0"},"canonical_sha256":"16465978b71f378cf997c4798617c36bf1ecc6401dbb6fbc5506008544d97341","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:59:46.241169Z","signature_b64":"taYs4apYUQibLzIx3V7uvO05EXC3X3sOu6u0DNfw0HeuEKDAmDezlsIJGsNrsXgOHUoOcei2EyH65fGrM/4ZDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16465978b71f378cf997c4798617c36bf1ecc6401dbb6fbc5506008544d97341","last_reissued_at":"2026-05-18T02:59:46.240266Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:59:46.240266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.1709","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":"2026-05-18T02:59:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dc4ffA75sGn05aowzScMmg/t9vLrj6GIdatp4qfjnQJAE5cFaYevA48WDXVgTqb96CTv56PW7CDpLS0pGp6/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:01:39.801810Z"},"content_sha256":"cfbc4d81e107d1a35c16f7a06d79bc830e3f41626843b015b81954220e87eb89","schema_version":"1.0","event_id":"sha256:cfbc4d81e107d1a35c16f7a06d79bc830e3f41626843b015b81954220e87eb89"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:CZDFS6FXD43YZ6MXYR4YMF6DNP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards quantum dot arrays of entangled photon emitters","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Agnieszka Gocalinska, Emanuele Pelucchi, Gediminas Juska, Lorenzo O. Mereni, Valeria Dimastrodonato","submitted_at":"2014-02-07T17:38:56Z","abstract_excerpt":"We show that with a new family of pyramidal site-controlled InGaAsN quantum dots it is possible to obtain areas containing as much as 15% of polarization-entangled photon emitters - a major improvement if compared to the small fraction achievable by other quantum dot systems. Entanglement is attested by a two-photon polarization state density matrix and the parameters obtained from it. Emitters showing fidelities up to 0.721+-0.043 were found."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1709","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":"2026-05-18T02:59:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fuX5KNPGm/EGo5sgZLDyBfsXZzDOqak3rRiTxhdtw2zCbs9+DA1laV0lVSSky4o37+NSf3Veg0tLnnzffw2kBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T00:01:39.802162Z"},"content_sha256":"7aac4991acb2af337024436b1bd93aa0a2f18d0d7ccd81798d175024a0b05297","schema_version":"1.0","event_id":"sha256:7aac4991acb2af337024436b1bd93aa0a2f18d0d7ccd81798d175024a0b05297"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP/bundle.json","state_url":"https://pith.science/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP/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":"2026-05-28T00:01:39Z","links":{"resolver":"https://pith.science/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP","bundle":"https://pith.science/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP/bundle.json","state":"https://pith.science/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CZDFS6FXD43YZ6MXYR4YMF6DNP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:CZDFS6FXD43YZ6MXYR4YMF6DNP","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":"4aa89dcfdfc6ddd941e7bfa4dbdc9c8fcb081aed4c63d79755b1b6f612df6f1d","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-02-07T17:38:56Z","title_canon_sha256":"989f7128a3ab809e16e828d422dacaa9b97de9acd55450ec85d7abe778bb7721"},"schema_version":"1.0","source":{"id":"1402.1709","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1709","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1709v1","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1709","created_at":"2026-05-18T02:59:46Z"},{"alias_kind":"pith_short_12","alias_value":"CZDFS6FXD43Y","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_16","alias_value":"CZDFS6FXD43YZ6MX","created_at":"2026-05-18T12:28:25Z"},{"alias_kind":"pith_short_8","alias_value":"CZDFS6FX","created_at":"2026-05-18T12:28:25Z"}],"graph_snapshots":[{"event_id":"sha256:7aac4991acb2af337024436b1bd93aa0a2f18d0d7ccd81798d175024a0b05297","target":"graph","created_at":"2026-05-18T02:59:46Z","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 show that with a new family of pyramidal site-controlled InGaAsN quantum dots it is possible to obtain areas containing as much as 15% of polarization-entangled photon emitters - a major improvement if compared to the small fraction achievable by other quantum dot systems. Entanglement is attested by a two-photon polarization state density matrix and the parameters obtained from it. Emitters showing fidelities up to 0.721+-0.043 were found.","authors_text":"Agnieszka Gocalinska, Emanuele Pelucchi, Gediminas Juska, Lorenzo O. Mereni, Valeria Dimastrodonato","cross_cats":["quant-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-02-07T17:38:56Z","title":"Towards quantum dot arrays of entangled photon emitters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1709","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:cfbc4d81e107d1a35c16f7a06d79bc830e3f41626843b015b81954220e87eb89","target":"record","created_at":"2026-05-18T02:59:46Z","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":"4aa89dcfdfc6ddd941e7bfa4dbdc9c8fcb081aed4c63d79755b1b6f612df6f1d","cross_cats_sorted":["quant-ph"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2014-02-07T17:38:56Z","title_canon_sha256":"989f7128a3ab809e16e828d422dacaa9b97de9acd55450ec85d7abe778bb7721"},"schema_version":"1.0","source":{"id":"1402.1709","kind":"arxiv","version":1}},"canonical_sha256":"16465978b71f378cf997c4798617c36bf1ecc6401dbb6fbc5506008544d97341","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16465978b71f378cf997c4798617c36bf1ecc6401dbb6fbc5506008544d97341","first_computed_at":"2026-05-18T02:59:46.240266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:59:46.240266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"taYs4apYUQibLzIx3V7uvO05EXC3X3sOu6u0DNfw0HeuEKDAmDezlsIJGsNrsXgOHUoOcei2EyH65fGrM/4ZDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:59:46.241169Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.1709","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cfbc4d81e107d1a35c16f7a06d79bc830e3f41626843b015b81954220e87eb89","sha256:7aac4991acb2af337024436b1bd93aa0a2f18d0d7ccd81798d175024a0b05297"],"state_sha256":"d54b43c14e3c2fb4e7afa95a4de0912f9d98ec7e93261732b70cb786a2499fc9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u2kcXWA0kJzbvHCzA4KZ2l0WiOfhH217q/FCHrMc3OsaKjZ2a2s8lPxO09/sxqVMwPGdY/OJW7FfnW1LWVbYBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T00:01:39.804685Z","bundle_sha256":"5e37a9a124e781072910d9a913f7e44fae615d6a525f4c2e3c0d23e2e973c37a"}}