{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:XHBUZNXI5K63AAZJ56FR23KXM6","short_pith_number":"pith:XHBUZNXI","canonical_record":{"source":{"id":"2211.15138","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-11-28T08:49:59Z","cross_cats_sorted":[],"title_canon_sha256":"643e8e321c38473eb00b208204c6791a185b24f10d946e25cd03cd5f60ce8ab5","abstract_canon_sha256":"6dc5bbe232c9dcdb68e036396d60e778092ee7a88d53b1240c49bf10b3f28d32"},"schema_version":"1.0"},"canonical_sha256":"b9c34cb6e8eabdb00329ef8b1d6d57678e86f716f1603cd8fb3f7fbc5d3b332b","source":{"kind":"arxiv","id":"2211.15138","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.15138","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"arxiv_version","alias_value":"2211.15138v3","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.15138","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"pith_short_12","alias_value":"XHBUZNXI5K63","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"pith_short_16","alias_value":"XHBUZNXI5K63AAZJ","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"pith_short_8","alias_value":"XHBUZNXI","created_at":"2026-07-05T06:32:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:XHBUZNXI5K63AAZJ56FR23KXM6","target":"record","payload":{"canonical_record":{"source":{"id":"2211.15138","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-11-28T08:49:59Z","cross_cats_sorted":[],"title_canon_sha256":"643e8e321c38473eb00b208204c6791a185b24f10d946e25cd03cd5f60ce8ab5","abstract_canon_sha256":"6dc5bbe232c9dcdb68e036396d60e778092ee7a88d53b1240c49bf10b3f28d32"},"schema_version":"1.0"},"canonical_sha256":"b9c34cb6e8eabdb00329ef8b1d6d57678e86f716f1603cd8fb3f7fbc5d3b332b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:32:52.813408Z","signature_b64":"UL6sc9g/tu6/ocIiK+XWafs1+kciUTep/ZXTMor5EaqPY3M5hEYSSc0X/afJQo3/dZYMUQoe1xmiwHXf13chAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9c34cb6e8eabdb00329ef8b1d6d57678e86f716f1603cd8fb3f7fbc5d3b332b","last_reissued_at":"2026-07-05T06:32:52.813008Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:32:52.813008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.15138","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:32:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cueLrgj30nxfSkAWVk4MzVEMyr5fKT8VnIZikJZGWJYGnodfdh1WIwtUsUrQskOMvzphIrERoEUdbAnSiLGCAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T21:37:56.766615Z"},"content_sha256":"33a335cb7e38ca5a8ae53f0f963ac2dd1ea8549a65b9f4b35a2946efbaa9b2e0","schema_version":"1.0","event_id":"sha256:33a335cb7e38ca5a8ae53f0f963ac2dd1ea8549a65b9f4b35a2946efbaa9b2e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:XHBUZNXI5K63AAZJ56FR23KXM6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient Dicke state generation in a network of lossy channels","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Masahiro Takeoka, Rikizo Ikuta, Tomoyuki Horikiri, Wojciech Roga","submitted_at":"2022-11-28T08:49:59Z","abstract_excerpt":"We analyze the generation of entanglement in a multipartite optical network. We generalize the twin-field strategy to the multipartie case and show that our protocol has advantageous rate-loss scalings of distributing W states and Dicke states over the star networks. We give precise theoretical formulas and quantitative performance analyses. Also analysis of the same protocol using Gaussian states as resources, which is a typical setup of many experimental tests, is provided."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.15138","kind":"arxiv","version":3},"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/2211.15138/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:32:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G6jpTNc1mqF42xRhVgJUJtZIxmVupARTlRUXamdTru0CozTPTXapMfMEOGTpa+r4AbmARv7iDs/ey+oaMXNvAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T21:37:56.767552Z"},"content_sha256":"0fd007e2e6b7dc48d24f5d09e6fe9cb7335c26deb737ec9a66a250d6c405c20d","schema_version":"1.0","event_id":"sha256:0fd007e2e6b7dc48d24f5d09e6fe9cb7335c26deb737ec9a66a250d6c405c20d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XHBUZNXI5K63AAZJ56FR23KXM6/bundle.json","state_url":"https://pith.science/pith/XHBUZNXI5K63AAZJ56FR23KXM6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XHBUZNXI5K63AAZJ56FR23KXM6/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":"2026-08-13T21:37:56Z","links":{"resolver":"https://pith.science/pith/XHBUZNXI5K63AAZJ56FR23KXM6","bundle":"https://pith.science/pith/XHBUZNXI5K63AAZJ56FR23KXM6/bundle.json","state":"https://pith.science/pith/XHBUZNXI5K63AAZJ56FR23KXM6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XHBUZNXI5K63AAZJ56FR23KXM6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:XHBUZNXI5K63AAZJ56FR23KXM6","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":"6dc5bbe232c9dcdb68e036396d60e778092ee7a88d53b1240c49bf10b3f28d32","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-11-28T08:49:59Z","title_canon_sha256":"643e8e321c38473eb00b208204c6791a185b24f10d946e25cd03cd5f60ce8ab5"},"schema_version":"1.0","source":{"id":"2211.15138","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.15138","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"arxiv_version","alias_value":"2211.15138v3","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.15138","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"pith_short_12","alias_value":"XHBUZNXI5K63","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"pith_short_16","alias_value":"XHBUZNXI5K63AAZJ","created_at":"2026-07-05T06:32:52Z"},{"alias_kind":"pith_short_8","alias_value":"XHBUZNXI","created_at":"2026-07-05T06:32:52Z"}],"graph_snapshots":[{"event_id":"sha256:0fd007e2e6b7dc48d24f5d09e6fe9cb7335c26deb737ec9a66a250d6c405c20d","target":"graph","created_at":"2026-07-05T06:32:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2211.15138/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze the generation of entanglement in a multipartite optical network. We generalize the twin-field strategy to the multipartie case and show that our protocol has advantageous rate-loss scalings of distributing W states and Dicke states over the star networks. We give precise theoretical formulas and quantitative performance analyses. Also analysis of the same protocol using Gaussian states as resources, which is a typical setup of many experimental tests, is provided.","authors_text":"Masahiro Takeoka, Rikizo Ikuta, Tomoyuki Horikiri, Wojciech Roga","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-11-28T08:49:59Z","title":"Efficient Dicke state generation in a network of lossy channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.15138","kind":"arxiv","version":3},"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":"sha256:33a335cb7e38ca5a8ae53f0f963ac2dd1ea8549a65b9f4b35a2946efbaa9b2e0","target":"record","created_at":"2026-07-05T06:32:52Z","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":"6dc5bbe232c9dcdb68e036396d60e778092ee7a88d53b1240c49bf10b3f28d32","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-11-28T08:49:59Z","title_canon_sha256":"643e8e321c38473eb00b208204c6791a185b24f10d946e25cd03cd5f60ce8ab5"},"schema_version":"1.0","source":{"id":"2211.15138","kind":"arxiv","version":3}},"canonical_sha256":"b9c34cb6e8eabdb00329ef8b1d6d57678e86f716f1603cd8fb3f7fbc5d3b332b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9c34cb6e8eabdb00329ef8b1d6d57678e86f716f1603cd8fb3f7fbc5d3b332b","first_computed_at":"2026-07-05T06:32:52.813008Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:32:52.813008Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UL6sc9g/tu6/ocIiK+XWafs1+kciUTep/ZXTMor5EaqPY3M5hEYSSc0X/afJQo3/dZYMUQoe1xmiwHXf13chAA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:32:52.813408Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.15138","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33a335cb7e38ca5a8ae53f0f963ac2dd1ea8549a65b9f4b35a2946efbaa9b2e0","sha256:0fd007e2e6b7dc48d24f5d09e6fe9cb7335c26deb737ec9a66a250d6c405c20d"],"state_sha256":"3ae912dd569ea7943e8923461b6deb651dccc54c7df77dd07eb3b3aeccac1895"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UZ18P+TKxqDP34uDFw/Ei2Lrxsztp6VUlZQQlOnyB+7Cd/gvVcNHxVXUN4cPmvKNfKuCk/21nNUUq9xqvvr3Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T21:37:56.791537Z","bundle_sha256":"ba1a17925485f9d31fb4002d4fe0daea4cc7a31ad20b90202b13e18a64b31165"}}