{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:PCTBGXYTA7RHCCLBEVULBNNTLU","short_pith_number":"pith:PCTBGXYT","canonical_record":{"source":{"id":"1712.03668","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-11T08:04:52Z","cross_cats_sorted":[],"title_canon_sha256":"cc75d486c70a1a74b643b9eb5666758499655f9be2d9ad30307dc0da2ca471c7","abstract_canon_sha256":"eac38de44fe0372e3ed0ccb994f3ecceffd4fdb7b7a3a6830e2c2e576e299c78"},"schema_version":"1.0"},"canonical_sha256":"78a6135f1307e27109612568b0b5b35d15e3f8520cec46bd9e0aca3a82a51fba","source":{"kind":"arxiv","id":"1712.03668","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.03668","created_at":"2026-05-18T00:28:09Z"},{"alias_kind":"arxiv_version","alias_value":"1712.03668v1","created_at":"2026-05-18T00:28:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.03668","created_at":"2026-05-18T00:28:09Z"},{"alias_kind":"pith_short_12","alias_value":"PCTBGXYTA7RH","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PCTBGXYTA7RHCCLB","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PCTBGXYT","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:PCTBGXYTA7RHCCLBEVULBNNTLU","target":"record","payload":{"canonical_record":{"source":{"id":"1712.03668","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-11T08:04:52Z","cross_cats_sorted":[],"title_canon_sha256":"cc75d486c70a1a74b643b9eb5666758499655f9be2d9ad30307dc0da2ca471c7","abstract_canon_sha256":"eac38de44fe0372e3ed0ccb994f3ecceffd4fdb7b7a3a6830e2c2e576e299c78"},"schema_version":"1.0"},"canonical_sha256":"78a6135f1307e27109612568b0b5b35d15e3f8520cec46bd9e0aca3a82a51fba","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:09.779590Z","signature_b64":"X6agR2wZsMeyg4ieEM+XW1hT4zkKxq+Gv01C3W/tVba0W5jmmKZBomkQD8LiwTzPjrDPzvfSDEGxplQJvYz7AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"78a6135f1307e27109612568b0b5b35d15e3f8520cec46bd9e0aca3a82a51fba","last_reissued_at":"2026-05-18T00:28:09.779054Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:09.779054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.03668","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":"2026-05-18T00:28:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KuefCZGKp97tweuHAYivug44XMsIiFQ6/KGo6l+75Rp89BOwvfcejnCSAtil3xX0U+xfEUoyGGKqx9DvcIVFCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:08:36.722860Z"},"content_sha256":"d30c21dc2dac3d6df43b855113154c2cde4517e62e3a87e3338dd53ed42a77a6","schema_version":"1.0","event_id":"sha256:d30c21dc2dac3d6df43b855113154c2cde4517e62e3a87e3338dd53ed42a77a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:PCTBGXYTA7RHCCLBEVULBNNTLU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Decoherence-protected memory for a single-photon qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. Neuzner, G. Rempe, M. K\\\"orber, O. Morin, S. Langenfeld, S. Ritter","submitted_at":"2017-12-11T08:04:52Z","abstract_excerpt":"The long-lived, efficient storage and retrieval of a qubit encoded on a photon is an important ingredient for future quantum networks. Although systems with intrinsically long coherence times have been demonstrated, the combination with an efficient light-matter interface remains an outstanding challenge. In fact, the coherence times of memories for photonic qubits are currently limited to a few milliseconds. Here we report on a qubit memory based on a single atom coupled to a high-finesse optical resonator. By mapping and remapping the qubit between a basis used for light-matter interfacing a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.03668","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":"2026-05-18T00:28:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K3xCPNVt2V57yQPXT0LeiUyuUzCdFrAVTkR0ZN9zvtb0D8V3u8B5CfBvfUV3E2EG34vjX8e/w4BOYPWyw8tWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:08:36.723261Z"},"content_sha256":"276b667fa0dd6a6f34f1b882b584af7efb49c6335561409152606b2d7516eee5","schema_version":"1.0","event_id":"sha256:276b667fa0dd6a6f34f1b882b584af7efb49c6335561409152606b2d7516eee5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PCTBGXYTA7RHCCLBEVULBNNTLU/bundle.json","state_url":"https://pith.science/pith/PCTBGXYTA7RHCCLBEVULBNNTLU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PCTBGXYTA7RHCCLBEVULBNNTLU/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":"2026-06-01T12:08:36Z","links":{"resolver":"https://pith.science/pith/PCTBGXYTA7RHCCLBEVULBNNTLU","bundle":"https://pith.science/pith/PCTBGXYTA7RHCCLBEVULBNNTLU/bundle.json","state":"https://pith.science/pith/PCTBGXYTA7RHCCLBEVULBNNTLU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PCTBGXYTA7RHCCLBEVULBNNTLU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:PCTBGXYTA7RHCCLBEVULBNNTLU","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":"eac38de44fe0372e3ed0ccb994f3ecceffd4fdb7b7a3a6830e2c2e576e299c78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-11T08:04:52Z","title_canon_sha256":"cc75d486c70a1a74b643b9eb5666758499655f9be2d9ad30307dc0da2ca471c7"},"schema_version":"1.0","source":{"id":"1712.03668","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.03668","created_at":"2026-05-18T00:28:09Z"},{"alias_kind":"arxiv_version","alias_value":"1712.03668v1","created_at":"2026-05-18T00:28:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.03668","created_at":"2026-05-18T00:28:09Z"},{"alias_kind":"pith_short_12","alias_value":"PCTBGXYTA7RH","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"PCTBGXYTA7RHCCLB","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"PCTBGXYT","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:276b667fa0dd6a6f34f1b882b584af7efb49c6335561409152606b2d7516eee5","target":"graph","created_at":"2026-05-18T00:28:09Z","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":"The long-lived, efficient storage and retrieval of a qubit encoded on a photon is an important ingredient for future quantum networks. Although systems with intrinsically long coherence times have been demonstrated, the combination with an efficient light-matter interface remains an outstanding challenge. In fact, the coherence times of memories for photonic qubits are currently limited to a few milliseconds. Here we report on a qubit memory based on a single atom coupled to a high-finesse optical resonator. By mapping and remapping the qubit between a basis used for light-matter interfacing a","authors_text":"A. Neuzner, G. Rempe, M. K\\\"orber, O. Morin, S. Langenfeld, S. Ritter","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-11T08:04:52Z","title":"Decoherence-protected memory for a single-photon qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.03668","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:d30c21dc2dac3d6df43b855113154c2cde4517e62e3a87e3338dd53ed42a77a6","target":"record","created_at":"2026-05-18T00:28:09Z","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":"eac38de44fe0372e3ed0ccb994f3ecceffd4fdb7b7a3a6830e2c2e576e299c78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-11T08:04:52Z","title_canon_sha256":"cc75d486c70a1a74b643b9eb5666758499655f9be2d9ad30307dc0da2ca471c7"},"schema_version":"1.0","source":{"id":"1712.03668","kind":"arxiv","version":1}},"canonical_sha256":"78a6135f1307e27109612568b0b5b35d15e3f8520cec46bd9e0aca3a82a51fba","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78a6135f1307e27109612568b0b5b35d15e3f8520cec46bd9e0aca3a82a51fba","first_computed_at":"2026-05-18T00:28:09.779054Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:09.779054Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X6agR2wZsMeyg4ieEM+XW1hT4zkKxq+Gv01C3W/tVba0W5jmmKZBomkQD8LiwTzPjrDPzvfSDEGxplQJvYz7AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:09.779590Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.03668","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d30c21dc2dac3d6df43b855113154c2cde4517e62e3a87e3338dd53ed42a77a6","sha256:276b667fa0dd6a6f34f1b882b584af7efb49c6335561409152606b2d7516eee5"],"state_sha256":"ed9d03222a69259c4871ad65d84f411a81aa93170cc9dff591b8897ad14ee61e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"85qBcRoBFYlolBD2drnGWORgZLvhgCeiiZfPfH5OsBQJHhZ3ezRcAYX6NLEeAMa1IlRja8lgKn58JbR6rbfUBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:08:36.725403Z","bundle_sha256":"77f1622cb9da3a99296af90c46c015a7ebaa98af9b23fa090310a863fc0ce7db"}}