{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2021:TUFWFITAEMZUV6WR45UEFQOFLC","short_pith_number":"pith:TUFWFITA","schema_version":"1.0","canonical_sha256":"9d0b62a26023334afad1e76842c1c558856ef0131b861bc2a0a42f38da8a5436","source":{"kind":"arxiv","id":"2111.15526","version":1},"attestation_state":"computed","paper":{"title":"Entangling single atoms over 33 km telecom fibre","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christoph Becher, Florian Fertig, Harald Weinfurter, Matthias Bock, Matthias Seubert, Pooja Malik, Robert Garthoff, Sebastian Eppelt, Tim van Leent, Tobias Bauer, Wei Zhang, Wenjamin Rosenfeld, Yiru Zhou","submitted_at":"2021-11-30T16:13:40Z","abstract_excerpt":"Heralded entanglement between distant quantum memories is the key resource for quantum networks. Based on quantum repeater protocols, these networks will facilitate efficient large-scale quantum communication and distributed quantum computing. However, despite vast efforts, long-distance fibre based network links have not been realized yet. Here we present results demonstrating heralded entanglement between two independent, remote single-atom quantum memories generated over fibre links with a total length up to 33 km. To overcome the attenuation losses in the long optical fibres of photons ini"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2111.15526","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2021-11-30T16:13:40Z","cross_cats_sorted":[],"title_canon_sha256":"953b80a9820b513b67ad56c8a9533b786c786c0f8b2dd972857225b994adedbf","abstract_canon_sha256":"76e06c5690adfb65028a68818d88cf3ddf12bf9e15334ac6e84d97fbfd62a9fa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:44:19.211048Z","signature_b64":"dpNOKVa/ARKrY+V17GqTGxDu80TuQ4ISalmmB9xtahAwmaRLAAtZr4S9+Usr5XgPUO2BrqK6BqKeGAW3pM56CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9d0b62a26023334afad1e76842c1c558856ef0131b861bc2a0a42f38da8a5436","last_reissued_at":"2026-07-05T04:44:19.210591Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:44:19.210591Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Entangling single atoms over 33 km telecom fibre","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Christoph Becher, Florian Fertig, Harald Weinfurter, Matthias Bock, Matthias Seubert, Pooja Malik, Robert Garthoff, Sebastian Eppelt, Tim van Leent, Tobias Bauer, Wei Zhang, Wenjamin Rosenfeld, Yiru Zhou","submitted_at":"2021-11-30T16:13:40Z","abstract_excerpt":"Heralded entanglement between distant quantum memories is the key resource for quantum networks. Based on quantum repeater protocols, these networks will facilitate efficient large-scale quantum communication and distributed quantum computing. However, despite vast efforts, long-distance fibre based network links have not been realized yet. Here we present results demonstrating heralded entanglement between two independent, remote single-atom quantum memories generated over fibre links with a total length up to 33 km. To overcome the attenuation losses in the long optical fibres of photons ini"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.15526","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.15526/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2111.15526","created_at":"2026-07-05T04:44:19.210648+00:00"},{"alias_kind":"arxiv_version","alias_value":"2111.15526v1","created_at":"2026-07-05T04:44:19.210648+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.15526","created_at":"2026-07-05T04:44:19.210648+00:00"},{"alias_kind":"pith_short_12","alias_value":"TUFWFITAEMZU","created_at":"2026-07-05T04:44:19.210648+00:00"},{"alias_kind":"pith_short_16","alias_value":"TUFWFITAEMZUV6WR","created_at":"2026-07-05T04:44:19.210648+00:00"},{"alias_kind":"pith_short_8","alias_value":"TUFWFITA","created_at":"2026-07-05T04:44:19.210648+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC","json":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC.json","graph_json":"https://pith.science/api/pith-number/TUFWFITAEMZUV6WR45UEFQOFLC/graph.json","events_json":"https://pith.science/api/pith-number/TUFWFITAEMZUV6WR45UEFQOFLC/events.json","paper":"https://pith.science/paper/TUFWFITA"},"agent_actions":{"view_html":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC","download_json":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC.json","view_paper":"https://pith.science/paper/TUFWFITA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2111.15526&json=true","fetch_graph":"https://pith.science/api/pith-number/TUFWFITAEMZUV6WR45UEFQOFLC/graph.json","fetch_events":"https://pith.science/api/pith-number/TUFWFITAEMZUV6WR45UEFQOFLC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC/action/storage_attestation","attest_author":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC/action/author_attestation","sign_citation":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC/action/citation_signature","submit_replication":"https://pith.science/pith/TUFWFITAEMZUV6WR45UEFQOFLC/action/replication_record"}},"created_at":"2026-07-05T04:44:19.210648+00:00","updated_at":"2026-07-05T04:44:19.210648+00:00"}