{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:WUJFAQ6P3Q5QMUZ6NMKUNV7PWX","short_pith_number":"pith:WUJFAQ6P","canonical_record":{"source":{"id":"1407.8016","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-30T12:14:03Z","cross_cats_sorted":[],"title_canon_sha256":"76f7e6bdb12b7fdfcd276223cd6f61051c5f1a694ab58c67bcaa2520a8e1cc5e","abstract_canon_sha256":"da2179e897cb5d5fafb30e85fe826272a83ad5c4bd4fe0900d8187ee30a32027"},"schema_version":"1.0"},"canonical_sha256":"b5125043cfdc3b06533e6b1546d7efb5f2850ca0319ff28bff03639365270e28","source":{"kind":"arxiv","id":"1407.8016","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.8016","created_at":"2026-05-18T00:58:11Z"},{"alias_kind":"arxiv_version","alias_value":"1407.8016v2","created_at":"2026-05-18T00:58:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.8016","created_at":"2026-05-18T00:58:11Z"},{"alias_kind":"pith_short_12","alias_value":"WUJFAQ6P3Q5Q","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WUJFAQ6P3Q5QMUZ6","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WUJFAQ6P","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:WUJFAQ6P3Q5QMUZ6NMKUNV7PWX","target":"record","payload":{"canonical_record":{"source":{"id":"1407.8016","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-30T12:14:03Z","cross_cats_sorted":[],"title_canon_sha256":"76f7e6bdb12b7fdfcd276223cd6f61051c5f1a694ab58c67bcaa2520a8e1cc5e","abstract_canon_sha256":"da2179e897cb5d5fafb30e85fe826272a83ad5c4bd4fe0900d8187ee30a32027"},"schema_version":"1.0"},"canonical_sha256":"b5125043cfdc3b06533e6b1546d7efb5f2850ca0319ff28bff03639365270e28","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:58:11.507127Z","signature_b64":"LehPePaR9XQ1mVAAcOGJg5+vDVb7tvckpS1fLzi5H+ubQTtK9tuAilf9xYDOEWC1OhwpI956yDFESPbEPeV6CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5125043cfdc3b06533e6b1546d7efb5f2850ca0319ff28bff03639365270e28","last_reissued_at":"2026-05-18T00:58:11.506571Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:58:11.506571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.8016","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":"2026-05-18T00:58:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9Ne3X6W9+DDyOSmFZYUaCdIqhdrmWI30mdHe4a0jN14NKFVO2jY19G9PLsKw1mrkl/iX7ITuDbyCUVl/bLaSBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:20:25.278687Z"},"content_sha256":"5a3285842b8caf86b9995f28fee73004f98ea862f9b909782f2af4a70b5f13a0","schema_version":"1.0","event_id":"sha256:5a3285842b8caf86b9995f28fee73004f98ea862f9b909782f2af4a70b5f13a0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:WUJFAQ6P3Q5QMUZ6NMKUNV7PWX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Measurement-device-independent quantum key distribution with ensemble-based memories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christiana Panayi, Mohsen Razavi, Nicol\\'o Lo Piparo","submitted_at":"2014-07-30T12:14:03Z","abstract_excerpt":"Quantum memories are enabling devices for extending the reach of quantum key distribution (QKD) systems. The required specifications for memories are, however, often considered too demanding for available technologies. One can change this mindset by introducing memory-assisted measurement-device-independent QKD (MDI-QKD), which imposes less stringent conditions on the memory modules. It has been shown that, in the case of {\\em fast} single-qubit memories, we can reach rates and distances not attainable by single no-memory QKD links. Single-qubit memories, such as single atoms or ions, have, cu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.8016","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":"2026-05-18T00:58:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wM/C7YsjFMxIAqQxKmPDGrsf3qEcbZsvID508YP9coVds+RgPAjVgMjFXfrTQ0W1H5loEbHnkZzpptOCVlIKAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T21:20:25.279073Z"},"content_sha256":"97370e997fecaa1b223eb0d96fed9757edf48b0bc887f8b8550f76ff619537bb","schema_version":"1.0","event_id":"sha256:97370e997fecaa1b223eb0d96fed9757edf48b0bc887f8b8550f76ff619537bb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX/bundle.json","state_url":"https://pith.science/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX/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":"2026-06-08T21:20:25Z","links":{"resolver":"https://pith.science/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX","bundle":"https://pith.science/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX/bundle.json","state":"https://pith.science/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WUJFAQ6P3Q5QMUZ6NMKUNV7PWX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:WUJFAQ6P3Q5QMUZ6NMKUNV7PWX","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":"da2179e897cb5d5fafb30e85fe826272a83ad5c4bd4fe0900d8187ee30a32027","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-30T12:14:03Z","title_canon_sha256":"76f7e6bdb12b7fdfcd276223cd6f61051c5f1a694ab58c67bcaa2520a8e1cc5e"},"schema_version":"1.0","source":{"id":"1407.8016","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.8016","created_at":"2026-05-18T00:58:11Z"},{"alias_kind":"arxiv_version","alias_value":"1407.8016v2","created_at":"2026-05-18T00:58:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.8016","created_at":"2026-05-18T00:58:11Z"},{"alias_kind":"pith_short_12","alias_value":"WUJFAQ6P3Q5Q","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"WUJFAQ6P3Q5QMUZ6","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"WUJFAQ6P","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:97370e997fecaa1b223eb0d96fed9757edf48b0bc887f8b8550f76ff619537bb","target":"graph","created_at":"2026-05-18T00:58:11Z","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":"Quantum memories are enabling devices for extending the reach of quantum key distribution (QKD) systems. The required specifications for memories are, however, often considered too demanding for available technologies. One can change this mindset by introducing memory-assisted measurement-device-independent QKD (MDI-QKD), which imposes less stringent conditions on the memory modules. It has been shown that, in the case of {\\em fast} single-qubit memories, we can reach rates and distances not attainable by single no-memory QKD links. Single-qubit memories, such as single atoms or ions, have, cu","authors_text":"Christiana Panayi, Mohsen Razavi, Nicol\\'o Lo Piparo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-30T12:14:03Z","title":"Measurement-device-independent quantum key distribution with ensemble-based memories"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.8016","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":"sha256:5a3285842b8caf86b9995f28fee73004f98ea862f9b909782f2af4a70b5f13a0","target":"record","created_at":"2026-05-18T00:58:11Z","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":"da2179e897cb5d5fafb30e85fe826272a83ad5c4bd4fe0900d8187ee30a32027","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-07-30T12:14:03Z","title_canon_sha256":"76f7e6bdb12b7fdfcd276223cd6f61051c5f1a694ab58c67bcaa2520a8e1cc5e"},"schema_version":"1.0","source":{"id":"1407.8016","kind":"arxiv","version":2}},"canonical_sha256":"b5125043cfdc3b06533e6b1546d7efb5f2850ca0319ff28bff03639365270e28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5125043cfdc3b06533e6b1546d7efb5f2850ca0319ff28bff03639365270e28","first_computed_at":"2026-05-18T00:58:11.506571Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:58:11.506571Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LehPePaR9XQ1mVAAcOGJg5+vDVb7tvckpS1fLzi5H+ubQTtK9tuAilf9xYDOEWC1OhwpI956yDFESPbEPeV6CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:58:11.507127Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.8016","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5a3285842b8caf86b9995f28fee73004f98ea862f9b909782f2af4a70b5f13a0","sha256:97370e997fecaa1b223eb0d96fed9757edf48b0bc887f8b8550f76ff619537bb"],"state_sha256":"48cbb267f533ac7516910f4211f6476ee7749ad295b0f2e3b0fd0b4c188a7adf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ikfKjEq5HbBpd3ssRCfg7UlcU47YK9AhT2w5ct7YY6zgojwWNOGxdIMTNC0g+WaLI0JnJsZRj9Qderfo785GCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T21:20:25.281545Z","bundle_sha256":"4fcd65527237b4c484201539b3f6a773ab7c84dd0ebac22e1337e3bca07993cd"}}