{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:72BGFEQ5UKQHTJ7EWCOIM4VZKM","short_pith_number":"pith:72BGFEQ5","canonical_record":{"source":{"id":"quant-ph/9810082","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"1998-10-27T15:29:18Z","cross_cats_sorted":[],"title_canon_sha256":"ea6fc2b3a5b7b626d9378b453573421475067b0364b585db8e506ebb24865989","abstract_canon_sha256":"f31b6089083e3ed36a4ae655625b82bb92a16589b88cf94bc67d9e7c385b5575"},"schema_version":"1.0"},"canonical_sha256":"fe8262921da2a079a7e4b09c8672b9533ff8a38ee97a6aec325b4f6bb234cbb1","source":{"kind":"arxiv","id":"quant-ph/9810082","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/9810082","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/9810082v1","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/9810082","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"72BGFEQ5UKQH","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"pith_short_16","alias_value":"72BGFEQ5UKQHTJ7E","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"pith_short_8","alias_value":"72BGFEQ5","created_at":"2026-07-04T16:11:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:72BGFEQ5UKQHTJ7EWCOIM4VZKM","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/9810082","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"1998-10-27T15:29:18Z","cross_cats_sorted":[],"title_canon_sha256":"ea6fc2b3a5b7b626d9378b453573421475067b0364b585db8e506ebb24865989","abstract_canon_sha256":"f31b6089083e3ed36a4ae655625b82bb92a16589b88cf94bc67d9e7c385b5575"},"schema_version":"1.0"},"canonical_sha256":"fe8262921da2a079a7e4b09c8672b9533ff8a38ee97a6aec325b4f6bb234cbb1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:11:01.612882Z","signature_b64":"crfJAHbKBAe7Zhv8J4x+SjkGdMVEjDRLcGAQvyTx6Nfckh8Wg23FWM9aKUISk5OIVC3vU6IM/F20sO8qW4xJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fe8262921da2a079a7e4b09c8672b9533ff8a38ee97a6aec325b4f6bb234cbb1","last_reissued_at":"2026-07-04T16:11:01.612458Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:11:01.612458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/9810082","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:11:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j8mxK6kvLU2RwmZ7OaYBiBbVYljv7YYWGqAn47q8eF21bDmuNuCVj8rRRW+wgtPyr/5WD6JL0lJCstIGU1nPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:16:48.611094Z"},"content_sha256":"8bf618fc674f6af66029776fc2ec6b93663482c3c23c5a3326ad243a43cd5518","schema_version":"1.0","event_id":"sha256:8bf618fc674f6af66029776fc2ec6b93663482c3c23c5a3326ad243a43cd5518"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:72BGFEQ5UKQHTJ7EWCOIM4VZKM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum computation over continuous variables","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Samuel L. Braunstein, Seth Lloyd","submitted_at":"1998-10-27T15:29:18Z","abstract_excerpt":"This paper provides necessary and sufficient conditions for constructing a universal quantum computer over continuous variables. As an example, it is shown how a universal quantum computer for the amplitudes of the electromagnetic field might be constructed using simple linear devices such as beam-splitters and phase shifters, together with squeezers and nonlinear devices such as Kerr-effect fibers and atoms in optical cavities. Such a device could in principle perform `quantum floating point' computations. Problems of noise, finite precision, and error correction are discussed."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/9810082","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/quant-ph/9810082/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":"2026-07-04T16:11:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XGsWVF19qYSjkeooDuL24Gz40BeuU3n+GGL4lHlfGQ1pl1g8O+/HJA/KaQuq3bNI4tTyZBKVlVjDnife2zsnBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:16:48.611596Z"},"content_sha256":"c149e90289f4b9ea8d81a025b91181607712f2379dd1dd169c5358e7fd10c9e3","schema_version":"1.0","event_id":"sha256:c149e90289f4b9ea8d81a025b91181607712f2379dd1dd169c5358e7fd10c9e3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM/bundle.json","state_url":"https://pith.science/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM/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":"2026-08-03T22:16:48Z","links":{"resolver":"https://pith.science/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM","bundle":"https://pith.science/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM/bundle.json","state":"https://pith.science/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/72BGFEQ5UKQHTJ7EWCOIM4VZKM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:72BGFEQ5UKQHTJ7EWCOIM4VZKM","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":"f31b6089083e3ed36a4ae655625b82bb92a16589b88cf94bc67d9e7c385b5575","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"1998-10-27T15:29:18Z","title_canon_sha256":"ea6fc2b3a5b7b626d9378b453573421475067b0364b585db8e506ebb24865989"},"schema_version":"1.0","source":{"id":"quant-ph/9810082","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/9810082","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/9810082v1","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/9810082","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"pith_short_12","alias_value":"72BGFEQ5UKQH","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"pith_short_16","alias_value":"72BGFEQ5UKQHTJ7E","created_at":"2026-07-04T16:11:01Z"},{"alias_kind":"pith_short_8","alias_value":"72BGFEQ5","created_at":"2026-07-04T16:11:01Z"}],"graph_snapshots":[{"event_id":"sha256:c149e90289f4b9ea8d81a025b91181607712f2379dd1dd169c5358e7fd10c9e3","target":"graph","created_at":"2026-07-04T16:11:01Z","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/quant-ph/9810082/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper provides necessary and sufficient conditions for constructing a universal quantum computer over continuous variables. As an example, it is shown how a universal quantum computer for the amplitudes of the electromagnetic field might be constructed using simple linear devices such as beam-splitters and phase shifters, together with squeezers and nonlinear devices such as Kerr-effect fibers and atoms in optical cavities. Such a device could in principle perform `quantum floating point' computations. Problems of noise, finite precision, and error correction are discussed.","authors_text":"Samuel L. Braunstein, Seth Lloyd","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"1998-10-27T15:29:18Z","title":"Quantum computation over continuous variables"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/9810082","kind":"arxiv","version":1},"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":"sha256:8bf618fc674f6af66029776fc2ec6b93663482c3c23c5a3326ad243a43cd5518","target":"record","created_at":"2026-07-04T16:11:01Z","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":"f31b6089083e3ed36a4ae655625b82bb92a16589b88cf94bc67d9e7c385b5575","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"1998-10-27T15:29:18Z","title_canon_sha256":"ea6fc2b3a5b7b626d9378b453573421475067b0364b585db8e506ebb24865989"},"schema_version":"1.0","source":{"id":"quant-ph/9810082","kind":"arxiv","version":1}},"canonical_sha256":"fe8262921da2a079a7e4b09c8672b9533ff8a38ee97a6aec325b4f6bb234cbb1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fe8262921da2a079a7e4b09c8672b9533ff8a38ee97a6aec325b4f6bb234cbb1","first_computed_at":"2026-07-04T16:11:01.612458Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:11:01.612458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"crfJAHbKBAe7Zhv8J4x+SjkGdMVEjDRLcGAQvyTx6Nfckh8Wg23FWM9aKUISk5OIVC3vU6IM/F20sO8qW4xJDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:11:01.612882Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/9810082","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8bf618fc674f6af66029776fc2ec6b93663482c3c23c5a3326ad243a43cd5518","sha256:c149e90289f4b9ea8d81a025b91181607712f2379dd1dd169c5358e7fd10c9e3"],"state_sha256":"8f30c9bbf3f946ce8d24ef73f1b3c6c9694ebc8fa31724036752da65edaecea4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p6QDOgzGbs/x4ZF3qF3T9MguoWpL2SlvciqqCP7WwvsFqtwZwHYQv2Lc5yc6WZAdeie5fv0yTJpUB8OtwCb8Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T22:16:48.616391Z","bundle_sha256":"73360e5c485c38bf189510371622ac8fe49e605c5d2484c21dd3a63b14e7d96c"}}