{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:FUBJNSHRFFNACPFK7QIXAWOTLN","short_pith_number":"pith:FUBJNSHR","canonical_record":{"source":{"id":"1604.07347","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-04-25T18:00:19Z","cross_cats_sorted":[],"title_canon_sha256":"3ff0687a92ef0b677b09ba81a103aaebd39c5035a69a05efbf68d2270cf5a4cc","abstract_canon_sha256":"6e37431926aeee4aaecad0c304d611ca4fa9629264de569fa79e731213dbf804"},"schema_version":"1.0"},"canonical_sha256":"2d0296c8f1295a013caafc117059d35b68dfd1b913958a97a8e53057bb8ddbc8","source":{"kind":"arxiv","id":"1604.07347","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07347","created_at":"2026-05-18T00:50:40Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07347v1","created_at":"2026-05-18T00:50:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07347","created_at":"2026-05-18T00:50:40Z"},{"alias_kind":"pith_short_12","alias_value":"FUBJNSHRFFNA","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FUBJNSHRFFNACPFK","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FUBJNSHR","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:FUBJNSHRFFNACPFK7QIXAWOTLN","target":"record","payload":{"canonical_record":{"source":{"id":"1604.07347","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-04-25T18:00:19Z","cross_cats_sorted":[],"title_canon_sha256":"3ff0687a92ef0b677b09ba81a103aaebd39c5035a69a05efbf68d2270cf5a4cc","abstract_canon_sha256":"6e37431926aeee4aaecad0c304d611ca4fa9629264de569fa79e731213dbf804"},"schema_version":"1.0"},"canonical_sha256":"2d0296c8f1295a013caafc117059d35b68dfd1b913958a97a8e53057bb8ddbc8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:50:40.261847Z","signature_b64":"F26ZNiUs20eQU+raEaKhqUqduj+KVqAMIA0NlepThPzO2X24yCzv2YSreLsINyJMuGJWtgNlnlf8ScEUtV+GDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2d0296c8f1295a013caafc117059d35b68dfd1b913958a97a8e53057bb8ddbc8","last_reissued_at":"2026-05-18T00:50:40.261035Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:50:40.261035Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.07347","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":"2026-05-18T00:50:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rL8vkZ1fqSGIuK1lvPqVgGcXwAffdmAzggtfGLBR8YqgwkQBf9wgj6vq7/x4YbeajOemhjlwEtmeofebustmAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T16:46:36.623907Z"},"content_sha256":"15d3f74a2b7fdb17b27298611ebcca90ae81c373005eb56724122b500918fe94","schema_version":"1.0","event_id":"sha256:15d3f74a2b7fdb17b27298611ebcca90ae81c373005eb56724122b500918fe94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:FUBJNSHRFFNACPFK7QIXAWOTLN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting entanglement of continuous variables with three mutually unbiased bases","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"D. S. Tasca, E. C. Paul, Lukasz Rudnicki, S. P. Walborn","submitted_at":"2016-04-25T18:00:19Z","abstract_excerpt":"An uncertainty relation is introduced for a symmetric arrangement of three mutually unbiased bases in continuous variable phase space, and then used to derive a bipartite entanglement criterion based on the variance of global operators composed of these three phase space variables. We test this criterion using spatial variables of photon pairs, and show that the entangled photons are correlated in three pairs of bases."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07347","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":""},"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":"2026-05-18T00:50:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RODirxDIe8pCuhR48ULRg709uQAfbSxn2uzYeQP7z+UV6/ushGeCdX1ZELk+TXRKHrn0GZkKJ+1KdIFmPLajBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T16:46:36.624230Z"},"content_sha256":"40b0e05d85f688c4a89bb0f84d509f110f051be63e7ef28c1ab7974d10f48af0","schema_version":"1.0","event_id":"sha256:40b0e05d85f688c4a89bb0f84d509f110f051be63e7ef28c1ab7974d10f48af0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FUBJNSHRFFNACPFK7QIXAWOTLN/bundle.json","state_url":"https://pith.science/pith/FUBJNSHRFFNACPFK7QIXAWOTLN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FUBJNSHRFFNACPFK7QIXAWOTLN/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":"2026-06-23T16:46:36Z","links":{"resolver":"https://pith.science/pith/FUBJNSHRFFNACPFK7QIXAWOTLN","bundle":"https://pith.science/pith/FUBJNSHRFFNACPFK7QIXAWOTLN/bundle.json","state":"https://pith.science/pith/FUBJNSHRFFNACPFK7QIXAWOTLN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FUBJNSHRFFNACPFK7QIXAWOTLN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FUBJNSHRFFNACPFK7QIXAWOTLN","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":"6e37431926aeee4aaecad0c304d611ca4fa9629264de569fa79e731213dbf804","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-04-25T18:00:19Z","title_canon_sha256":"3ff0687a92ef0b677b09ba81a103aaebd39c5035a69a05efbf68d2270cf5a4cc"},"schema_version":"1.0","source":{"id":"1604.07347","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.07347","created_at":"2026-05-18T00:50:40Z"},{"alias_kind":"arxiv_version","alias_value":"1604.07347v1","created_at":"2026-05-18T00:50:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.07347","created_at":"2026-05-18T00:50:40Z"},{"alias_kind":"pith_short_12","alias_value":"FUBJNSHRFFNA","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FUBJNSHRFFNACPFK","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FUBJNSHR","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:40b0e05d85f688c4a89bb0f84d509f110f051be63e7ef28c1ab7974d10f48af0","target":"graph","created_at":"2026-05-18T00:50:40Z","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":"An uncertainty relation is introduced for a symmetric arrangement of three mutually unbiased bases in continuous variable phase space, and then used to derive a bipartite entanglement criterion based on the variance of global operators composed of these three phase space variables. We test this criterion using spatial variables of photon pairs, and show that the entangled photons are correlated in three pairs of bases.","authors_text":"D. S. Tasca, E. C. Paul, Lukasz Rudnicki, S. P. Walborn","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-04-25T18:00:19Z","title":"Detecting entanglement of continuous variables with three mutually unbiased bases"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.07347","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":"sha256:15d3f74a2b7fdb17b27298611ebcca90ae81c373005eb56724122b500918fe94","target":"record","created_at":"2026-05-18T00:50:40Z","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":"6e37431926aeee4aaecad0c304d611ca4fa9629264de569fa79e731213dbf804","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-04-25T18:00:19Z","title_canon_sha256":"3ff0687a92ef0b677b09ba81a103aaebd39c5035a69a05efbf68d2270cf5a4cc"},"schema_version":"1.0","source":{"id":"1604.07347","kind":"arxiv","version":1}},"canonical_sha256":"2d0296c8f1295a013caafc117059d35b68dfd1b913958a97a8e53057bb8ddbc8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2d0296c8f1295a013caafc117059d35b68dfd1b913958a97a8e53057bb8ddbc8","first_computed_at":"2026-05-18T00:50:40.261035Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:50:40.261035Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F26ZNiUs20eQU+raEaKhqUqduj+KVqAMIA0NlepThPzO2X24yCzv2YSreLsINyJMuGJWtgNlnlf8ScEUtV+GDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:50:40.261847Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.07347","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15d3f74a2b7fdb17b27298611ebcca90ae81c373005eb56724122b500918fe94","sha256:40b0e05d85f688c4a89bb0f84d509f110f051be63e7ef28c1ab7974d10f48af0"],"state_sha256":"608ba063f7d85c839d76dcaa6c0d90de9e3b9966ab462fca8395e4fe43c122cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o9AkrHHZmZ7ibSvCXP0zuyrbQ2+pUQHoiPnsg9qEmdMLFDW9Itw/r5E3Fj/iifq6JNeqUqe20VEJEH+T8UWDAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T16:46:36.626089Z","bundle_sha256":"324fd908c4c05314f9db8c72707767cb75f99b9633fc93ea59d2a6122b256900"}}