{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:75ZAYZFIWBQY6VM7WIMFHQ7YLR","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":"ce1f94a1b9261686b586d923ef60ca05fa3eaad710952ddd77f0f8a2237ad8a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-12-24T14:38:28Z","title_canon_sha256":"420f4e46a705a911e97ddbe992cabe65d2fcef55971333f2c042cc09da2a4e57"},"schema_version":"1.0","source":{"id":"2112.13074","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.13074","created_at":"2026-07-05T04:58:14Z"},{"alias_kind":"arxiv_version","alias_value":"2112.13074v1","created_at":"2026-07-05T04:58:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.13074","created_at":"2026-07-05T04:58:14Z"},{"alias_kind":"pith_short_12","alias_value":"75ZAYZFIWBQY","created_at":"2026-07-05T04:58:14Z"},{"alias_kind":"pith_short_16","alias_value":"75ZAYZFIWBQY6VM7","created_at":"2026-07-05T04:58:14Z"},{"alias_kind":"pith_short_8","alias_value":"75ZAYZFI","created_at":"2026-07-05T04:58:14Z"}],"graph_snapshots":[{"event_id":"sha256:263451f6084f367635ab03c87829a125f849a322506dab0fc0fbf0f03fb4df82","target":"graph","created_at":"2026-07-05T04:58:14Z","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/2112.13074/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The generation of photon pairs in single quantum dots is based on a process that is, in its nature, deterministic. However, an efficient extraction of these photon pairs from a high-index semiconductor host material requires engineering of the photonic environment. We report on a micropillar-based device featuring an extraction efficiency of 69.4(10)$\\%$ that is achieved by harnessing a broadband operation suitable for extraction of photon pairs emitted from a single quantum dot. Opposing the approaches that rely solely on Purcell enhancement to realize the enhancement of the extraction effici","authors_text":"Ana Predojevi\\'c, Andrew B. Young, Christian Schneider, David Dlaka, Edmund Harbord, Junior R. Gonzales-Ureta, Laia Gin\\'es, Magdalena Mocza{\\l}a-Dusanowska, Miroslav Je\\v{z}ek, Radim Ho\\v{s}\\'ak, Ruth Oulton, Sven H\\\"ofling","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-12-24T14:38:28Z","title":"High extraction efficiency source of photon pairs based on a quantum dot embedded in a broadband micropillar cavity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.13074","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":"sha256:3a29e620a00238382e56a3d64fe638ae1c5f2c7bf54e4b568646dadff30c6379","target":"record","created_at":"2026-07-05T04:58:14Z","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":"ce1f94a1b9261686b586d923ef60ca05fa3eaad710952ddd77f0f8a2237ad8a8","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-12-24T14:38:28Z","title_canon_sha256":"420f4e46a705a911e97ddbe992cabe65d2fcef55971333f2c042cc09da2a4e57"},"schema_version":"1.0","source":{"id":"2112.13074","kind":"arxiv","version":1}},"canonical_sha256":"ff720c64a8b0618f559fb21853c3f85c6d382e3fe1b450defa28378d423fcc5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff720c64a8b0618f559fb21853c3f85c6d382e3fe1b450defa28378d423fcc5b","first_computed_at":"2026-07-05T04:58:14.890578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:58:14.890578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"l5jMAcZThb+8jUkB3ekuWMiB68tfd7GbQRcEK+mngoGu6DTf3KVvzxY0cDEtr/Q1yI5lVipnkhACp/bmm8RsCg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:58:14.890962Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.13074","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a29e620a00238382e56a3d64fe638ae1c5f2c7bf54e4b568646dadff30c6379","sha256:263451f6084f367635ab03c87829a125f849a322506dab0fc0fbf0f03fb4df82"],"state_sha256":"a166bd38f88d555b41808f4358e5452c33c217bcf998ab524033604ae1f03d1d"}