{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:XSEAIMFN4NWDP3XNJXYZG6YVPO","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":"b99a3ceac5b90b884c1ea18d7a269ae7e52eca329a101285eadd2dc2aead2934","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-03T21:22:29Z","title_canon_sha256":"fffb8b7de762a53741bc8d3b09740df91d387f59646b735fca8416da0a97b34d"},"schema_version":"1.0","source":{"id":"1606.01279","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01279","created_at":"2026-05-18T01:10:02Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01279v2","created_at":"2026-05-18T01:10:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01279","created_at":"2026-05-18T01:10:02Z"},{"alias_kind":"pith_short_12","alias_value":"XSEAIMFN4NWD","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"XSEAIMFN4NWDP3XN","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"XSEAIMFN","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:6ca70a0426f21e67f58ea0a1a9193b6e41d082ad637e7901951ae026b88d1f9a","target":"graph","created_at":"2026-05-18T01:10:02Z","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":"Tripartite entangled states, such as GHZ and W states, are typically generated by manipulating two pairs of polarization-entangled photons in bulk optics. Here we propose a scheme to generate W states that are entangled in the energy degree of freedom in an integrated optical circuit. Our approach employs photon pairs generated by spontaneous four-wave mixing (SFWM) in a micro- ring resonator. We also present a feasible procedure for demonstrating the generation of such a state, and we compare polarization-entangled and energy-entangled schemes for the preparation of W states.","authors_text":"J. E. Sipe, L. Maccone, M. Liscidini, M. Menotti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-03T21:22:29Z","title":"Generation of energy-entangled W states via parametric fluorescence in integrated devices"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01279","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:e4df32aa8f10b1e4aa3b16cf523e066269dabfbe3f6017f26b30283ab4c125d4","target":"record","created_at":"2026-05-18T01:10:02Z","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":"b99a3ceac5b90b884c1ea18d7a269ae7e52eca329a101285eadd2dc2aead2934","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-03T21:22:29Z","title_canon_sha256":"fffb8b7de762a53741bc8d3b09740df91d387f59646b735fca8416da0a97b34d"},"schema_version":"1.0","source":{"id":"1606.01279","kind":"arxiv","version":2}},"canonical_sha256":"bc880430ade36c37eeed4df1937b157bbf5573782e7f468ece96c25098ba4697","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc880430ade36c37eeed4df1937b157bbf5573782e7f468ece96c25098ba4697","first_computed_at":"2026-05-18T01:10:02.595871Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:02.595871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tikXmYTpS3ZJpM11Ky92bBpt19iE9ew9P2J0MJ8cZjXyF0GA/prM1szlwE5K6G0OhPje7XGzoG3xaxf3z/2RBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:02.596540Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.01279","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e4df32aa8f10b1e4aa3b16cf523e066269dabfbe3f6017f26b30283ab4c125d4","sha256:6ca70a0426f21e67f58ea0a1a9193b6e41d082ad637e7901951ae026b88d1f9a"],"state_sha256":"aa0327728fd997c8b1e9e2cf218832c63981f97323c0b072ffe1f5690c4e8b5c"}