{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:LT3Y3EQO3II63QKASTS27ZWEB6","short_pith_number":"pith:LT3Y3EQO","schema_version":"1.0","canonical_sha256":"5cf78d920eda11edc14094e5afe6c40f85e825b1ae0bbee1d27650752bbc08dc","source":{"kind":"arxiv","id":"2409.06623","version":1},"attestation_state":"computed","paper":{"title":"Deterministic generation of a 20-qubit two-dimensional photonic cluster state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Aleksandr Grigorev, Alexander Flasby, Alexandre Blais, Alonso Hern\\'andez-Ant\\'on, Andreas Wallraff, Christopher Eichler, Christoph Hellings, Daniel Malz, Dante Colao Zanuz, James O'Sullivan, Jean-Claude Besse, Kevin Reuer, Manuel H. Mu\\~noz-Arias, Xi Dai","submitted_at":"2024-09-10T16:25:24Z","abstract_excerpt":"Multidimensional cluster states are a key resource for robust quantum communication, measurement-based quantum computing and quantum metrology. Here, we present a device capable of emitting large-scale entangled microwave photonic states in a two dimensional ladder structure. The device consists of a pair of coupled superconducting transmon qubits which are each tuneably coupled to a common output waveguide. This architecture permits entanglement between each transmon and a deterministically emitted photonic qubit. By interleaving two-qubit gates with controlled photon emission, we generate 2 "},"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":"2409.06623","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2024-09-10T16:25:24Z","cross_cats_sorted":[],"title_canon_sha256":"2705de06f96790d136d286d97c7d43e249305aeb78ec9fc02eab6827ff001332","abstract_canon_sha256":"dad81a03571901c746da02cdd183fe4006dec0df8d04d4e88301a2d7fb1d24bf"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:42:22.689795Z","signature_b64":"cmwP6LapECRd9yTigpznyF9lFLJJrELSRJ0vGVRE7ZN/So96/Qb0TMQt7hebIXTujknCAM+bRSiygTU4+QGPCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5cf78d920eda11edc14094e5afe6c40f85e825b1ae0bbee1d27650752bbc08dc","last_reissued_at":"2026-07-05T11:42:22.689373Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:42:22.689373Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Deterministic generation of a 20-qubit two-dimensional photonic cluster state","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Aleksandr Grigorev, Alexander Flasby, Alexandre Blais, Alonso Hern\\'andez-Ant\\'on, Andreas Wallraff, Christopher Eichler, Christoph Hellings, Daniel Malz, Dante Colao Zanuz, James O'Sullivan, Jean-Claude Besse, Kevin Reuer, Manuel H. Mu\\~noz-Arias, Xi Dai","submitted_at":"2024-09-10T16:25:24Z","abstract_excerpt":"Multidimensional cluster states are a key resource for robust quantum communication, measurement-based quantum computing and quantum metrology. Here, we present a device capable of emitting large-scale entangled microwave photonic states in a two dimensional ladder structure. The device consists of a pair of coupled superconducting transmon qubits which are each tuneably coupled to a common output waveguide. This architecture permits entanglement between each transmon and a deterministically emitted photonic qubit. By interleaving two-qubit gates with controlled photon emission, we generate 2 "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.06623","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/2409.06623/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":"2409.06623","created_at":"2026-07-05T11:42:22.689429+00:00"},{"alias_kind":"arxiv_version","alias_value":"2409.06623v1","created_at":"2026-07-05T11:42:22.689429+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.06623","created_at":"2026-07-05T11:42:22.689429+00:00"},{"alias_kind":"pith_short_12","alias_value":"LT3Y3EQO3II6","created_at":"2026-07-05T11:42:22.689429+00:00"},{"alias_kind":"pith_short_16","alias_value":"LT3Y3EQO3II63QKA","created_at":"2026-07-05T11:42:22.689429+00:00"},{"alias_kind":"pith_short_8","alias_value":"LT3Y3EQO","created_at":"2026-07-05T11:42:22.689429+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/LT3Y3EQO3II63QKASTS27ZWEB6","json":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6.json","graph_json":"https://pith.science/api/pith-number/LT3Y3EQO3II63QKASTS27ZWEB6/graph.json","events_json":"https://pith.science/api/pith-number/LT3Y3EQO3II63QKASTS27ZWEB6/events.json","paper":"https://pith.science/paper/LT3Y3EQO"},"agent_actions":{"view_html":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6","download_json":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6.json","view_paper":"https://pith.science/paper/LT3Y3EQO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2409.06623&json=true","fetch_graph":"https://pith.science/api/pith-number/LT3Y3EQO3II63QKASTS27ZWEB6/graph.json","fetch_events":"https://pith.science/api/pith-number/LT3Y3EQO3II63QKASTS27ZWEB6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6/action/storage_attestation","attest_author":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6/action/author_attestation","sign_citation":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6/action/citation_signature","submit_replication":"https://pith.science/pith/LT3Y3EQO3II63QKASTS27ZWEB6/action/replication_record"}},"created_at":"2026-07-05T11:42:22.689429+00:00","updated_at":"2026-07-05T11:42:22.689429+00:00"}