{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:VUKNXOXEEJRBC5TBPJN6VQHJUT","short_pith_number":"pith:VUKNXOXE","canonical_record":{"source":{"id":"1706.07325","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-06-22T14:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"5638cd609e5e24cd77247e34bf49b0709933de7d8a7b83e7f1376200d9f0cb74","abstract_canon_sha256":"c495603f4d3f06ffad966d0f85be52004232d563005c9b32adbc6ae7b2a0197c"},"schema_version":"1.0"},"canonical_sha256":"ad14dbbae422621176617a5beac0e9a4cf149d58287b0c1986d84bade1bcad8e","source":{"kind":"arxiv","id":"1706.07325","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.07325","created_at":"2026-05-18T00:30:28Z"},{"alias_kind":"arxiv_version","alias_value":"1706.07325v2","created_at":"2026-05-18T00:30:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.07325","created_at":"2026-05-18T00:30:28Z"},{"alias_kind":"pith_short_12","alias_value":"VUKNXOXEEJRB","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VUKNXOXEEJRBC5TB","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VUKNXOXE","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:VUKNXOXEEJRBC5TBPJN6VQHJUT","target":"record","payload":{"canonical_record":{"source":{"id":"1706.07325","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-06-22T14:00:09Z","cross_cats_sorted":[],"title_canon_sha256":"5638cd609e5e24cd77247e34bf49b0709933de7d8a7b83e7f1376200d9f0cb74","abstract_canon_sha256":"c495603f4d3f06ffad966d0f85be52004232d563005c9b32adbc6ae7b2a0197c"},"schema_version":"1.0"},"canonical_sha256":"ad14dbbae422621176617a5beac0e9a4cf149d58287b0c1986d84bade1bcad8e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:30:28.074850Z","signature_b64":"oaeFRJK0xMkUXtwRXefZpIGnv4Ec/xWheV9NNCl/F8195LHYHjmbTFuwZk8cNvUUvXaX0WbHIiw3EI17VaEpCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad14dbbae422621176617a5beac0e9a4cf149d58287b0c1986d84bade1bcad8e","last_reissued_at":"2026-05-18T00:30:28.074086Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:30:28.074086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.07325","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:30:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xrwygvnxde0AZj8hEnJFYIsWA5R4NRqGKZVexkDXzUY+YW/D7hgZDKDVydUbpYHECQLj0wci8aop4RVfHQU+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T15:06:57.757666Z"},"content_sha256":"83e97d561f741509af8fe494d5940b49ad8dbdd941f03003cd5b26d5ee9ffc48","schema_version":"1.0","event_id":"sha256:83e97d561f741509af8fe494d5940b49ad8dbdd941f03003cd5b26d5ee9ffc48"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:VUKNXOXEEJRBC5TBPJN6VQHJUT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Physical-depth architectural requirements for generating universal photonic cluster states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Hugo Cable, Mercedes Gimeno-Segovia, Pete Shadbolt, Sam Morley-Short, Sara Bartolucci, Terry Rudolph","submitted_at":"2017-06-22T14:00:09Z","abstract_excerpt":"Most leading proposals for linear-optical quantum computing (LOQC) use cluster states, which act as a universal resource for measurement-based (one-way) quantum computation (MBQC). In ballistic approaches to LOQC, cluster states are generated passively from small entangled resource states using so-called fusion operations. Results from percolation theory have previously been used to argue that universal cluster states can be generated in the ballistic approach using schemes which exceed the critical threshold for percolation, but these results consider cluster states with unbounded size. Here "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.07325","kind":"arxiv","version":2},"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":"2026-05-18T00:30:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O4ekNxuSEy4br5ynP66J52OHsh5h2NzQjtEQDTwlnK588d01wfbbu0UZe/tVwz80TlpJ1BzSxaUIvw63kWXTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T15:06:57.758364Z"},"content_sha256":"10ac9374e72d3d1d12ff36ffd488f64e82785f8280c7919d3ed31c164d509f8e","schema_version":"1.0","event_id":"sha256:10ac9374e72d3d1d12ff36ffd488f64e82785f8280c7919d3ed31c164d509f8e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT/bundle.json","state_url":"https://pith.science/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT/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":"2026-05-30T15:06:57Z","links":{"resolver":"https://pith.science/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT","bundle":"https://pith.science/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT/bundle.json","state":"https://pith.science/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VUKNXOXEEJRBC5TBPJN6VQHJUT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VUKNXOXEEJRBC5TBPJN6VQHJUT","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":"c495603f4d3f06ffad966d0f85be52004232d563005c9b32adbc6ae7b2a0197c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-06-22T14:00:09Z","title_canon_sha256":"5638cd609e5e24cd77247e34bf49b0709933de7d8a7b83e7f1376200d9f0cb74"},"schema_version":"1.0","source":{"id":"1706.07325","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.07325","created_at":"2026-05-18T00:30:28Z"},{"alias_kind":"arxiv_version","alias_value":"1706.07325v2","created_at":"2026-05-18T00:30:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.07325","created_at":"2026-05-18T00:30:28Z"},{"alias_kind":"pith_short_12","alias_value":"VUKNXOXEEJRB","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VUKNXOXEEJRBC5TB","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VUKNXOXE","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:10ac9374e72d3d1d12ff36ffd488f64e82785f8280c7919d3ed31c164d509f8e","target":"graph","created_at":"2026-05-18T00:30:28Z","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":"Most leading proposals for linear-optical quantum computing (LOQC) use cluster states, which act as a universal resource for measurement-based (one-way) quantum computation (MBQC). In ballistic approaches to LOQC, cluster states are generated passively from small entangled resource states using so-called fusion operations. Results from percolation theory have previously been used to argue that universal cluster states can be generated in the ballistic approach using schemes which exceed the critical threshold for percolation, but these results consider cluster states with unbounded size. Here ","authors_text":"Hugo Cable, Mercedes Gimeno-Segovia, Pete Shadbolt, Sam Morley-Short, Sara Bartolucci, Terry Rudolph","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-06-22T14:00:09Z","title":"Physical-depth architectural requirements for generating universal photonic cluster states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.07325","kind":"arxiv","version":2},"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":"sha256:83e97d561f741509af8fe494d5940b49ad8dbdd941f03003cd5b26d5ee9ffc48","target":"record","created_at":"2026-05-18T00:30:28Z","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":"c495603f4d3f06ffad966d0f85be52004232d563005c9b32adbc6ae7b2a0197c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-06-22T14:00:09Z","title_canon_sha256":"5638cd609e5e24cd77247e34bf49b0709933de7d8a7b83e7f1376200d9f0cb74"},"schema_version":"1.0","source":{"id":"1706.07325","kind":"arxiv","version":2}},"canonical_sha256":"ad14dbbae422621176617a5beac0e9a4cf149d58287b0c1986d84bade1bcad8e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad14dbbae422621176617a5beac0e9a4cf149d58287b0c1986d84bade1bcad8e","first_computed_at":"2026-05-18T00:30:28.074086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:30:28.074086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oaeFRJK0xMkUXtwRXefZpIGnv4Ec/xWheV9NNCl/F8195LHYHjmbTFuwZk8cNvUUvXaX0WbHIiw3EI17VaEpCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:30:28.074850Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.07325","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:83e97d561f741509af8fe494d5940b49ad8dbdd941f03003cd5b26d5ee9ffc48","sha256:10ac9374e72d3d1d12ff36ffd488f64e82785f8280c7919d3ed31c164d509f8e"],"state_sha256":"a255498a527627f3bd944a381dab1c7aa7cbdedbfd9b0b13bf3fa43454466730"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MackEct3vZRDkRJ05oTjBT8x+r4x2R02OlViG5CmNX07qNkFMTgJGIrVq2iTflcszA9AsbXhy9DTkI9tEjFcDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T15:06:57.760948Z","bundle_sha256":"67321f164cfa98f71b651485246e47d1915794e8d8f091185e585eaaa9da7987"}}