{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:Q6KQB2AUXSRD5NXYEQQL7YPGCP","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":"5e2113d84cd7736eae8af5e5ae825e256916fba0ee71b41dfa3b7cbd8c331cd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-09-24T16:55:16Z","title_canon_sha256":"caebd580c505893a741096c5fe391f13dc4ac83f2718f49f99e05e6c6edcd0da"},"schema_version":"1.0","source":{"id":"2009.11818","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2009.11818","created_at":"2026-07-05T06:05:24Z"},{"alias_kind":"arxiv_version","alias_value":"2009.11818v1","created_at":"2026-07-05T06:05:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.11818","created_at":"2026-07-05T06:05:24Z"},{"alias_kind":"pith_short_12","alias_value":"Q6KQB2AUXSRD","created_at":"2026-07-05T06:05:24Z"},{"alias_kind":"pith_short_16","alias_value":"Q6KQB2AUXSRD5NXY","created_at":"2026-07-05T06:05:24Z"},{"alias_kind":"pith_short_8","alias_value":"Q6KQB2AU","created_at":"2026-07-05T06:05:24Z"}],"graph_snapshots":[{"event_id":"sha256:e4ccc5c92167556161e27890c941c6c0a51036530cd9237c7b40905e6543cbc8","target":"graph","created_at":"2026-07-05T06:05:24Z","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/2009.11818/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Global quantum secure communication can be achieved using quantum key distribution (QKD) with orbiting satellites. Established techniques use attenuated lasers as weak coherent pulse (WCP) sources, with so-called decoy-state protocols, to generate the required single-photon-level pulses. While such approaches are elegant, they come at the expense of attainable final key due to inherent multi-photon emission, thereby constraining secure key generation over the high-loss, noisy channels expected for satellite transmissions. In this work we improve on this limitation by using true single-photon p","authors_text":"Arash Ahmadi, Brendon L. Higgins, Dan Dalacu, Michael E. Reimer, Philip J. Poole, Poompong Chaiwongkhot, Robin L. Williams, Sara Hosseini, Thomas Jennewein","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-09-24T16:55:16Z","title":"Enhancing secure key rates of satellite QKD using a quantum dot single-photon source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.11818","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":"sha256:5082a2f782dd5aff1880268c314ff8eec5efe2bd8212ae9a5290df7cb14a373f","target":"record","created_at":"2026-07-05T06:05:24Z","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":"5e2113d84cd7736eae8af5e5ae825e256916fba0ee71b41dfa3b7cbd8c331cd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-09-24T16:55:16Z","title_canon_sha256":"caebd580c505893a741096c5fe391f13dc4ac83f2718f49f99e05e6c6edcd0da"},"schema_version":"1.0","source":{"id":"2009.11818","kind":"arxiv","version":1}},"canonical_sha256":"879500e814bca23eb6f82420bfe1e613fdb1d1921bd6b79610a2d69f30b47071","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"879500e814bca23eb6f82420bfe1e613fdb1d1921bd6b79610a2d69f30b47071","first_computed_at":"2026-07-05T06:05:24.261193Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:05:24.261193Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gu/2CzKxwUD3Xwu1crm5tm1a9cpo6uHtSs5mPImXeAFxUp+7RnJV8iJvrbpxR9r1rYVffu9MXHyAZGy6jdyyDA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:05:24.261665Z","signed_message":"canonical_sha256_bytes"},"source_id":"2009.11818","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5082a2f782dd5aff1880268c314ff8eec5efe2bd8212ae9a5290df7cb14a373f","sha256:e4ccc5c92167556161e27890c941c6c0a51036530cd9237c7b40905e6543cbc8"],"state_sha256":"1bf55f5e89faff2f505baad9dc8287f50df9a9c191df846ce957610c97349254"}