{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:F5WJ4LKYGFYYSFQ3QEW5RM3UGI","short_pith_number":"pith:F5WJ4LKY","canonical_record":{"source":{"id":"1008.2284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-13T10:19:45Z","cross_cats_sorted":[],"title_canon_sha256":"4ad573948d36fe2cb721b10a1f3b227d0399ca1ce3e0e99d0bcc191105b36ef2","abstract_canon_sha256":"9a45847ca5929ef06d1f8eb1de5420af0012391fbdcab9525700b13397a5958e"},"schema_version":"1.0"},"canonical_sha256":"2f6c9e2d58317189161b812dd8b3743235303bb05f645fc3887932b44fe29425","source":{"kind":"arxiv","id":"1008.2284","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2284","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2284v1","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2284","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"pith_short_12","alias_value":"F5WJ4LKYGFYY","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"F5WJ4LKYGFYYSFQ3","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"F5WJ4LKY","created_at":"2026-05-18T12:26:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:F5WJ4LKYGFYYSFQ3QEW5RM3UGI","target":"record","payload":{"canonical_record":{"source":{"id":"1008.2284","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-13T10:19:45Z","cross_cats_sorted":[],"title_canon_sha256":"4ad573948d36fe2cb721b10a1f3b227d0399ca1ce3e0e99d0bcc191105b36ef2","abstract_canon_sha256":"9a45847ca5929ef06d1f8eb1de5420af0012391fbdcab9525700b13397a5958e"},"schema_version":"1.0"},"canonical_sha256":"2f6c9e2d58317189161b812dd8b3743235303bb05f645fc3887932b44fe29425","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:34:01.318521Z","signature_b64":"ENRXJ1EBxMfkZUeCOcqfVswd3tPVzy7YvBheCsgKTug13BF0S2I5aC1OBTiCKa8/hiB3XRDVpIcxCVCwrU46BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2f6c9e2d58317189161b812dd8b3743235303bb05f645fc3887932b44fe29425","last_reissued_at":"2026-05-18T04:34:01.318067Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:34:01.318067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.2284","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":"2026-05-18T04:34:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UNLRWor5TE+cR44sxLaue4HgcpivBQrzyy1qZb0T9yto4EBFkKCCmWflLRcbVqRJfTxBJSxkwcpiOdcc47BGCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:05:31.541883Z"},"content_sha256":"1f9058e2d4afbfdd45439512f52c7efca18a75c4932982401e6d9fc56c0a8dca","schema_version":"1.0","event_id":"sha256:1f9058e2d4afbfdd45439512f52c7efca18a75c4932982401e6d9fc56c0a8dca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:F5WJ4LKYGFYYSFQ3QEW5RM3UGI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spin Wave Storage using Chirped Control Fields in Atomic Frequency Comb based Quantum Memory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hugues de Riedmatten, Ji\\v{r}\\'i Min\\'a\\v{r}, Mikael Afzelius, Nicolas Gisin, Nicolas Sangouard","submitted_at":"2010-08-13T10:19:45Z","abstract_excerpt":"It has been shown that an inhomogeneously broadened optical transition shaped into an atomic frequency comb can store a large number of temporal modes of the electromagnetic field at the single photon level without the need to increase the optical depth of the storage material. The readout of light modes is made efficient thanks to the rephasing of the optical-wavelength coherence similarly to photon echo-type techniques and the re-emission time is given by the comb structure. For on-demand readout and long storage times, two control fields are used to transfer back and forth the optical coher"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2284","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":"2026-05-18T04:34:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fddl2L+OD4hdaBs8draG3kijBqxgpPdYwFjsQOxvnvvihX4Q+i1xxGrvIzJTCQlq+873mnqTDYsdyUQVeolIAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T02:05:31.542230Z"},"content_sha256":"1aed68d807f19077285359996b251f6212456e74c2063ef21f4271d4b49a922f","schema_version":"1.0","event_id":"sha256:1aed68d807f19077285359996b251f6212456e74c2063ef21f4271d4b49a922f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI/bundle.json","state_url":"https://pith.science/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI/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":"2026-06-02T02:05:31Z","links":{"resolver":"https://pith.science/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI","bundle":"https://pith.science/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI/bundle.json","state":"https://pith.science/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/F5WJ4LKYGFYYSFQ3QEW5RM3UGI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:F5WJ4LKYGFYYSFQ3QEW5RM3UGI","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":"9a45847ca5929ef06d1f8eb1de5420af0012391fbdcab9525700b13397a5958e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-13T10:19:45Z","title_canon_sha256":"4ad573948d36fe2cb721b10a1f3b227d0399ca1ce3e0e99d0bcc191105b36ef2"},"schema_version":"1.0","source":{"id":"1008.2284","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2284","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2284v1","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2284","created_at":"2026-05-18T04:34:01Z"},{"alias_kind":"pith_short_12","alias_value":"F5WJ4LKYGFYY","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"F5WJ4LKYGFYYSFQ3","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"F5WJ4LKY","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:1aed68d807f19077285359996b251f6212456e74c2063ef21f4271d4b49a922f","target":"graph","created_at":"2026-05-18T04:34:01Z","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":"It has been shown that an inhomogeneously broadened optical transition shaped into an atomic frequency comb can store a large number of temporal modes of the electromagnetic field at the single photon level without the need to increase the optical depth of the storage material. The readout of light modes is made efficient thanks to the rephasing of the optical-wavelength coherence similarly to photon echo-type techniques and the re-emission time is given by the comb structure. For on-demand readout and long storage times, two control fields are used to transfer back and forth the optical coher","authors_text":"Hugues de Riedmatten, Ji\\v{r}\\'i Min\\'a\\v{r}, Mikael Afzelius, Nicolas Gisin, Nicolas Sangouard","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-13T10:19:45Z","title":"Spin Wave Storage using Chirped Control Fields in Atomic Frequency Comb based Quantum Memory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2284","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":"sha256:1f9058e2d4afbfdd45439512f52c7efca18a75c4932982401e6d9fc56c0a8dca","target":"record","created_at":"2026-05-18T04:34:01Z","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":"9a45847ca5929ef06d1f8eb1de5420af0012391fbdcab9525700b13397a5958e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-13T10:19:45Z","title_canon_sha256":"4ad573948d36fe2cb721b10a1f3b227d0399ca1ce3e0e99d0bcc191105b36ef2"},"schema_version":"1.0","source":{"id":"1008.2284","kind":"arxiv","version":1}},"canonical_sha256":"2f6c9e2d58317189161b812dd8b3743235303bb05f645fc3887932b44fe29425","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2f6c9e2d58317189161b812dd8b3743235303bb05f645fc3887932b44fe29425","first_computed_at":"2026-05-18T04:34:01.318067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:34:01.318067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ENRXJ1EBxMfkZUeCOcqfVswd3tPVzy7YvBheCsgKTug13BF0S2I5aC1OBTiCKa8/hiB3XRDVpIcxCVCwrU46BA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:34:01.318521Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.2284","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1f9058e2d4afbfdd45439512f52c7efca18a75c4932982401e6d9fc56c0a8dca","sha256:1aed68d807f19077285359996b251f6212456e74c2063ef21f4271d4b49a922f"],"state_sha256":"8d2cfcfe0db3203468a27a5cad78c67d840fb1577258f594edb39bac3c2675f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MOszBAbm397YN3gtJOI0PaC11bkdFWgjeWRxaAKJ2yC5flRWJawPMCW7xowa7JQ1YojCkjTFZA8ZPGIDVnkUCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T02:05:31.544145Z","bundle_sha256":"a46f97e551bdd0f15ff3fc145e9ebc2cdbd72c89510c0a093ac9f4100c28e9c9"}}