{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:BTIVMZUVIPF3F37DW7RSCQHUFT","short_pith_number":"pith:BTIVMZUV","canonical_record":{"source":{"id":"1302.3358","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-14T10:27:09Z","cross_cats_sorted":[],"title_canon_sha256":"4030df5aff19f4c914fd11a51999a1b2c48ad9f06c80dfcf06e2da5f1ad36544","abstract_canon_sha256":"6118078299f38bce800f42190645edfd9fbe6508c6b91f6e3dd6bb12fa7b0a81"},"schema_version":"1.0"},"canonical_sha256":"0cd156669543cbb2efe3b7e32140f42ce3c67d3069dccd4623426fd591c2418e","source":{"kind":"arxiv","id":"1302.3358","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.3358","created_at":"2026-05-18T01:11:08Z"},{"alias_kind":"arxiv_version","alias_value":"1302.3358v1","created_at":"2026-05-18T01:11:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.3358","created_at":"2026-05-18T01:11:08Z"},{"alias_kind":"pith_short_12","alias_value":"BTIVMZUVIPF3","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BTIVMZUVIPF3F37D","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BTIVMZUV","created_at":"2026-05-18T12:27:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:BTIVMZUVIPF3F37DW7RSCQHUFT","target":"record","payload":{"canonical_record":{"source":{"id":"1302.3358","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-14T10:27:09Z","cross_cats_sorted":[],"title_canon_sha256":"4030df5aff19f4c914fd11a51999a1b2c48ad9f06c80dfcf06e2da5f1ad36544","abstract_canon_sha256":"6118078299f38bce800f42190645edfd9fbe6508c6b91f6e3dd6bb12fa7b0a81"},"schema_version":"1.0"},"canonical_sha256":"0cd156669543cbb2efe3b7e32140f42ce3c67d3069dccd4623426fd591c2418e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:08.823213Z","signature_b64":"nBWJD3NigFYXtorqBPFHZRlMmxl7DRBhs3QVG6L++5vbfslloBSmnqNz7wgIMeoru5pcyoPiCaXNSJ1KDorjBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0cd156669543cbb2efe3b7e32140f42ce3c67d3069dccd4623426fd591c2418e","last_reissued_at":"2026-05-18T01:11:08.822809Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:08.822809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.3358","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":"2026-05-18T01:11:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nfnGyoVARWPMsxLltT4W0cgtbr6u//fgry+G4b+OnmfrV7DhieExWt/9w3CB8jmPU2ZO6zLCzLPYt4cNg5cMBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T16:42:07.487030Z"},"content_sha256":"8724fabb987522cf5acaa2288d141b2870a54fc7e4edecd44944e8417357efc7","schema_version":"1.0","event_id":"sha256:8724fabb987522cf5acaa2288d141b2870a54fc7e4edecd44944e8417357efc7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:BTIVMZUVIPF3F37DW7RSCQHUFT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Faithful Solid State Optical Memory with Dynamically Decoupled Spin Wave Storage","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alban Ferrier, Dieter Suter, Marko Lovri\\'c, Philippe Goldner","submitted_at":"2013-02-14T10:27:09Z","abstract_excerpt":"We report an optical memory in a rare earth doped crystal with long storage times, up to 20 ms, together with an optical bandwidth of 1.5 MHz. This is obtained by transferring optical coherences to nuclear spin coherences, which were then protected against environmental noise by dynamical decoupling. With this approach, we achieved a 33 fold increase in spin wave storage time over the intrinsic spin coherence lifetime. Comparison between different decoupling sequences indicates that sequences insensitive to initial spin coherence increase retrieval efficiency. Finally, an interference experime"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.3358","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":"2026-05-18T01:11:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CHZ5meB+oFDe6/zE3aKb72qOTzmWX/BQSlnjyojbL2ST9UnIApcCJKppJhBVG0N2RY2Zwkl6P0XYGCl2En9PAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T16:42:07.487757Z"},"content_sha256":"14d3c3ca180229d06ca41dc823f44d988668e40201a9840c076bc087e148fa93","schema_version":"1.0","event_id":"sha256:14d3c3ca180229d06ca41dc823f44d988668e40201a9840c076bc087e148fa93"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BTIVMZUVIPF3F37DW7RSCQHUFT/bundle.json","state_url":"https://pith.science/pith/BTIVMZUVIPF3F37DW7RSCQHUFT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BTIVMZUVIPF3F37DW7RSCQHUFT/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":"2026-06-08T16:42:07Z","links":{"resolver":"https://pith.science/pith/BTIVMZUVIPF3F37DW7RSCQHUFT","bundle":"https://pith.science/pith/BTIVMZUVIPF3F37DW7RSCQHUFT/bundle.json","state":"https://pith.science/pith/BTIVMZUVIPF3F37DW7RSCQHUFT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BTIVMZUVIPF3F37DW7RSCQHUFT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:BTIVMZUVIPF3F37DW7RSCQHUFT","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":"6118078299f38bce800f42190645edfd9fbe6508c6b91f6e3dd6bb12fa7b0a81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-14T10:27:09Z","title_canon_sha256":"4030df5aff19f4c914fd11a51999a1b2c48ad9f06c80dfcf06e2da5f1ad36544"},"schema_version":"1.0","source":{"id":"1302.3358","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.3358","created_at":"2026-05-18T01:11:08Z"},{"alias_kind":"arxiv_version","alias_value":"1302.3358v1","created_at":"2026-05-18T01:11:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.3358","created_at":"2026-05-18T01:11:08Z"},{"alias_kind":"pith_short_12","alias_value":"BTIVMZUVIPF3","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_16","alias_value":"BTIVMZUVIPF3F37D","created_at":"2026-05-18T12:27:40Z"},{"alias_kind":"pith_short_8","alias_value":"BTIVMZUV","created_at":"2026-05-18T12:27:40Z"}],"graph_snapshots":[{"event_id":"sha256:14d3c3ca180229d06ca41dc823f44d988668e40201a9840c076bc087e148fa93","target":"graph","created_at":"2026-05-18T01:11:08Z","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 report an optical memory in a rare earth doped crystal with long storage times, up to 20 ms, together with an optical bandwidth of 1.5 MHz. This is obtained by transferring optical coherences to nuclear spin coherences, which were then protected against environmental noise by dynamical decoupling. With this approach, we achieved a 33 fold increase in spin wave storage time over the intrinsic spin coherence lifetime. Comparison between different decoupling sequences indicates that sequences insensitive to initial spin coherence increase retrieval efficiency. Finally, an interference experime","authors_text":"Alban Ferrier, Dieter Suter, Marko Lovri\\'c, Philippe Goldner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-14T10:27:09Z","title":"Faithful Solid State Optical Memory with Dynamically Decoupled Spin Wave Storage"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.3358","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":"sha256:8724fabb987522cf5acaa2288d141b2870a54fc7e4edecd44944e8417357efc7","target":"record","created_at":"2026-05-18T01:11:08Z","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":"6118078299f38bce800f42190645edfd9fbe6508c6b91f6e3dd6bb12fa7b0a81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-02-14T10:27:09Z","title_canon_sha256":"4030df5aff19f4c914fd11a51999a1b2c48ad9f06c80dfcf06e2da5f1ad36544"},"schema_version":"1.0","source":{"id":"1302.3358","kind":"arxiv","version":1}},"canonical_sha256":"0cd156669543cbb2efe3b7e32140f42ce3c67d3069dccd4623426fd591c2418e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0cd156669543cbb2efe3b7e32140f42ce3c67d3069dccd4623426fd591c2418e","first_computed_at":"2026-05-18T01:11:08.822809Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:08.822809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nBWJD3NigFYXtorqBPFHZRlMmxl7DRBhs3QVG6L++5vbfslloBSmnqNz7wgIMeoru5pcyoPiCaXNSJ1KDorjBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:08.823213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.3358","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8724fabb987522cf5acaa2288d141b2870a54fc7e4edecd44944e8417357efc7","sha256:14d3c3ca180229d06ca41dc823f44d988668e40201a9840c076bc087e148fa93"],"state_sha256":"3882f93b5a0feab9a8102769cc403b1ee55ebb71eb63a26250fb404d2f3563c9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hkFsnEYmST49bgu9qJo8a+ww+4hxVK5bVy2ia2oXNq0f0/N5ZKsyF7SlHk/xmIC2Q9IM2DgfPuoIgc9gri+eCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T16:42:07.492404Z","bundle_sha256":"e0cc7119b5ae9bb8bfc18fd88a98940478899a920f9e5ded2c8f4a871dc853c9"}}