{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:DHVZNI34IQ2Q6HJG6W56H7RRYW","short_pith_number":"pith:DHVZNI34","canonical_record":{"source":{"id":"1503.06777","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-23T19:30:20Z","cross_cats_sorted":[],"title_canon_sha256":"98095e08a81d713833eeac110f87ed12e021a4632961d599c79894459b7d1461","abstract_canon_sha256":"af85c6c678352b1ba0f63beb16ea44d7078c772817b7a8e39e30ca6b1ef6c594"},"schema_version":"1.0"},"canonical_sha256":"19eb96a37c44350f1d26f5bbe3fe31c586411bb8443eb873e752ee5eaaa53c2d","source":{"kind":"arxiv","id":"1503.06777","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06777","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06777v2","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06777","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"DHVZNI34IQ2Q","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DHVZNI34IQ2Q6HJG","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DHVZNI34","created_at":"2026-05-18T12:29:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:DHVZNI34IQ2Q6HJG6W56H7RRYW","target":"record","payload":{"canonical_record":{"source":{"id":"1503.06777","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-23T19:30:20Z","cross_cats_sorted":[],"title_canon_sha256":"98095e08a81d713833eeac110f87ed12e021a4632961d599c79894459b7d1461","abstract_canon_sha256":"af85c6c678352b1ba0f63beb16ea44d7078c772817b7a8e39e30ca6b1ef6c594"},"schema_version":"1.0"},"canonical_sha256":"19eb96a37c44350f1d26f5bbe3fe31c586411bb8443eb873e752ee5eaaa53c2d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:18.542753Z","signature_b64":"PbjdjwGhv+X7EPMQsZ1suC0mn4tUyAx909Jd4I1J9nGCYDrw42VcZc/ng3oesieao1zRpPmVKhOIjK3PFbnZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"19eb96a37c44350f1d26f5bbe3fe31c586411bb8443eb873e752ee5eaaa53c2d","last_reissued_at":"2026-05-18T00:57:18.542201Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:18.542201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.06777","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":"2026-05-18T00:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SLXsQWa4ANDPCkQk4kBz4EHo0Kvyigc936GlczHUrLumnamCZu88YH2o/p6SspKEl3MJcdn1hQPPFaZOZGJECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:11:11.031208Z"},"content_sha256":"0db19685f8c3c91fccad30defc2780ec9547fb686f2f2b669a20ab34e07f689f","schema_version":"1.0","event_id":"sha256:0db19685f8c3c91fccad30defc2780ec9547fb686f2f2b669a20ab34e07f689f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:DHVZNI34IQ2Q6HJG6W56H7RRYW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ultrafast Long-Distance Quantum Communication with Static Linear Optics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Fabian Ewert, Marcel Bergmann, Peter van Loock","submitted_at":"2015-03-23T19:30:20Z","abstract_excerpt":"We propose a projection measurement onto encoded Bell states with a static network of linear optical elements. By increasing the size of the quantum error correction code, both Bell measurement efficiency and photon-loss tolerance can be made arbitrarily high at the same time. As a main application, we show that all-optical quantum communication over large distances with communication rates similar to those of classical communication is possible solely based on local state teleportations using optical sources of encoded Bell states, fixed arrays of beam splitters, and photon detectors. As anot"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06777","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":"2026-05-18T00:57:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AqJ5fhj9DBjz/8/5Sf9hMr1n6RpEYJnLutMen2SpcCiKXuOgWT3MokqVgYdQX7Otfu0Oe0a8jvjtBUYQxrZuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:11:11.031992Z"},"content_sha256":"b2955fe81be0eb9d414b0c89c30752b844607ca091daec731acae40ec5132033","schema_version":"1.0","event_id":"sha256:b2955fe81be0eb9d414b0c89c30752b844607ca091daec731acae40ec5132033"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW/bundle.json","state_url":"https://pith.science/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW/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":"2026-05-31T16:11:11Z","links":{"resolver":"https://pith.science/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW","bundle":"https://pith.science/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW/bundle.json","state":"https://pith.science/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DHVZNI34IQ2Q6HJG6W56H7RRYW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:DHVZNI34IQ2Q6HJG6W56H7RRYW","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":"af85c6c678352b1ba0f63beb16ea44d7078c772817b7a8e39e30ca6b1ef6c594","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-23T19:30:20Z","title_canon_sha256":"98095e08a81d713833eeac110f87ed12e021a4632961d599c79894459b7d1461"},"schema_version":"1.0","source":{"id":"1503.06777","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.06777","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"arxiv_version","alias_value":"1503.06777v2","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.06777","created_at":"2026-05-18T00:57:18Z"},{"alias_kind":"pith_short_12","alias_value":"DHVZNI34IQ2Q","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_16","alias_value":"DHVZNI34IQ2Q6HJG","created_at":"2026-05-18T12:29:17Z"},{"alias_kind":"pith_short_8","alias_value":"DHVZNI34","created_at":"2026-05-18T12:29:17Z"}],"graph_snapshots":[{"event_id":"sha256:b2955fe81be0eb9d414b0c89c30752b844607ca091daec731acae40ec5132033","target":"graph","created_at":"2026-05-18T00:57:18Z","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":"We propose a projection measurement onto encoded Bell states with a static network of linear optical elements. By increasing the size of the quantum error correction code, both Bell measurement efficiency and photon-loss tolerance can be made arbitrarily high at the same time. As a main application, we show that all-optical quantum communication over large distances with communication rates similar to those of classical communication is possible solely based on local state teleportations using optical sources of encoded Bell states, fixed arrays of beam splitters, and photon detectors. As anot","authors_text":"Fabian Ewert, Marcel Bergmann, Peter van Loock","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-23T19:30:20Z","title":"Ultrafast Long-Distance Quantum Communication with Static Linear Optics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.06777","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":"sha256:0db19685f8c3c91fccad30defc2780ec9547fb686f2f2b669a20ab34e07f689f","target":"record","created_at":"2026-05-18T00:57:18Z","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":"af85c6c678352b1ba0f63beb16ea44d7078c772817b7a8e39e30ca6b1ef6c594","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-03-23T19:30:20Z","title_canon_sha256":"98095e08a81d713833eeac110f87ed12e021a4632961d599c79894459b7d1461"},"schema_version":"1.0","source":{"id":"1503.06777","kind":"arxiv","version":2}},"canonical_sha256":"19eb96a37c44350f1d26f5bbe3fe31c586411bb8443eb873e752ee5eaaa53c2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19eb96a37c44350f1d26f5bbe3fe31c586411bb8443eb873e752ee5eaaa53c2d","first_computed_at":"2026-05-18T00:57:18.542201Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:18.542201Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PbjdjwGhv+X7EPMQsZ1suC0mn4tUyAx909Jd4I1J9nGCYDrw42VcZc/ng3oesieao1zRpPmVKhOIjK3PFbnZDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:18.542753Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.06777","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0db19685f8c3c91fccad30defc2780ec9547fb686f2f2b669a20ab34e07f689f","sha256:b2955fe81be0eb9d414b0c89c30752b844607ca091daec731acae40ec5132033"],"state_sha256":"724bbeb16f5e8a76937bd6f278eb6931992b5496cf3a96413e0274ea16aa198b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LuFQVTcEzLQG8yxcsytk5vx8bDcbtMz9FS/ao1J53eNweEAgHsKxnR+IEcD3CFB7BCrQL2jeb3C6KcMDIh3/AA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:11:11.035847Z","bundle_sha256":"132780c1d1290b07a9a5f000a43a1344629833f7a31f346dd9ecf7133d0411f3"}}