{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:VLZUFOL44XQWX4CBFKADDA67IJ","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":"3b62353b133619f1f7fded002ef07efa86a87ccc1354fcfe8c47e94ce7b6364b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-12-16T22:16:34Z","title_canon_sha256":"2cedc4a21c55f2b49f56699827102a74fb472a780bc6765e78998c47bbc74c83"},"schema_version":"1.0","source":{"id":"2412.12379","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.12379","created_at":"2026-07-05T11:10:49Z"},{"alias_kind":"arxiv_version","alias_value":"2412.12379v1","created_at":"2026-07-05T11:10:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.12379","created_at":"2026-07-05T11:10:49Z"},{"alias_kind":"pith_short_12","alias_value":"VLZUFOL44XQW","created_at":"2026-07-05T11:10:49Z"},{"alias_kind":"pith_short_16","alias_value":"VLZUFOL44XQWX4CB","created_at":"2026-07-05T11:10:49Z"},{"alias_kind":"pith_short_8","alias_value":"VLZUFOL4","created_at":"2026-07-05T11:10:49Z"}],"graph_snapshots":[{"event_id":"sha256:f65eddbf053ca326dc37db08b28cc1309b0ea752203dba04f0ea982502179874","target":"graph","created_at":"2026-07-05T11:10:49Z","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/2412.12379/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum memory devices with high storage efficiency and bandwidth are essential elements for future quantum networks. Here, we report a storage efficiency greater than 28% in a Tm$^{3+}$: YAG crystal in elevated temperatures and without compromising the memory bandwidth. Using various pumping and optimization techniques, we demonstrate multi-frequency window storage with a high memory bandwidth of 630 MHz. Moreover, we propose a general method for large-bandwidth atomic-frequency memory with non-Kramers rare-earth-ion (REI) in solids enabling significantly higher storage efficiency and bandwid","authors_text":"Mahdi Hosseini, Yisheng Lei, Zongfeng Li","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-12-16T22:16:34Z","title":"Efficient Pumping of Spectral Holes in a Tm$^{3+}$: YAG Crystal for Broadband Quantum Optical Storage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.12379","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":"sha256:2ff303e0667fcda92693b7a86aec5a336e9ffe0ea1a04b3f01bb8fe42e4cc6b8","target":"record","created_at":"2026-07-05T11:10:49Z","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":"3b62353b133619f1f7fded002ef07efa86a87ccc1354fcfe8c47e94ce7b6364b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2024-12-16T22:16:34Z","title_canon_sha256":"2cedc4a21c55f2b49f56699827102a74fb472a780bc6765e78998c47bbc74c83"},"schema_version":"1.0","source":{"id":"2412.12379","kind":"arxiv","version":1}},"canonical_sha256":"aaf342b97ce5e16bf0412a803183df4259d7b4995fb242bc13791443a71c0690","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aaf342b97ce5e16bf0412a803183df4259d7b4995fb242bc13791443a71c0690","first_computed_at":"2026-07-05T11:10:49.548199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:10:49.548199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gMmbR/nDJHXbKFxxVxq8dhDoHY3P5H5F03LjT+lu2DbXZ1A6oQTNjICAJyRwrWQKkyvo+mGmVbA5ORfMTLpyBg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:10:49.548755Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.12379","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ff303e0667fcda92693b7a86aec5a336e9ffe0ea1a04b3f01bb8fe42e4cc6b8","sha256:f65eddbf053ca326dc37db08b28cc1309b0ea752203dba04f0ea982502179874"],"state_sha256":"3a4263fb23025f39b11c3bc4712d23c2f19aa8192acadce90ded0e0eb087f717"}