{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:44EHXREJANSCB4O47I4ZSXIFD4","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":"b68abc93a901b3ddbedb457b27ca7760fca4994e11b9a02513eed46f2fd84a78","cross_cats_sorted":["cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-10-25T00:40:24Z","title_canon_sha256":"250c12758f42c8344fcd4fca5e81640edcf9c5d33f73f3e3332b73c3e654eedc"},"schema_version":"1.0","source":{"id":"1610.07689","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.07689","created_at":"2026-05-18T00:46:31Z"},{"alias_kind":"arxiv_version","alias_value":"1610.07689v2","created_at":"2026-05-18T00:46:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.07689","created_at":"2026-05-18T00:46:31Z"},{"alias_kind":"pith_short_12","alias_value":"44EHXREJANSC","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"44EHXREJANSCB4O4","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"44EHXREJ","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:065cedf0028e764b8d1ae9670bba3cfd756e6b81db86d91204f5d2be8115f217","target":"graph","created_at":"2026-05-18T00:46:31Z","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":"Although SU(1,1) interferometry achieves Heisenberg-limited sensitivities, it suffers from one major drawback: only those particles outcoupled from the pump mode contribute to the phase measurement. Since the number of particles outcoupled to these `side modes' is typically small, this limits the interferometer's absolute sensitivity. We propose an alternative `pumped-up' approach where all the input particles participate in the phase measurement, and show how this can be implemented in spinor Bose-Einstein condensates and hybrid atom-light systems - both of which have experimentally realized ","authors_text":"Robert J. Lewis-Swan, Simon A. Haine, Stuart S. Szigeti","cross_cats":["cond-mat.quant-gas"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-10-25T00:40:24Z","title":"Pumped-up SU(1,1) interferometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.07689","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:a1b6fb2dc5000dceb7aeba7e30bda94218f6c75d3b3147a79fa700d1aa230b17","target":"record","created_at":"2026-05-18T00:46:31Z","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":"b68abc93a901b3ddbedb457b27ca7760fca4994e11b9a02513eed46f2fd84a78","cross_cats_sorted":["cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-10-25T00:40:24Z","title_canon_sha256":"250c12758f42c8344fcd4fca5e81640edcf9c5d33f73f3e3332b73c3e654eedc"},"schema_version":"1.0","source":{"id":"1610.07689","kind":"arxiv","version":2}},"canonical_sha256":"e7087bc489036420f1dcfa39995d051f3ac0ba33e2d4b5496ca74928463e346a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7087bc489036420f1dcfa39995d051f3ac0ba33e2d4b5496ca74928463e346a","first_computed_at":"2026-05-18T00:46:31.670610Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:46:31.670610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pIoTwZJTBk3ypeh0buJVxzeUzK0xxpyPax7yNWxKn0Kt7Wjt/tyhSN8lEvehIx3ggYU81QUMLnG7D/7v14i4Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:46:31.671259Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.07689","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1b6fb2dc5000dceb7aeba7e30bda94218f6c75d3b3147a79fa700d1aa230b17","sha256:065cedf0028e764b8d1ae9670bba3cfd756e6b81db86d91204f5d2be8115f217"],"state_sha256":"49ffbd691f7df138a835afc4b17f2e7e4845745011a0a00a9a0d47b74a0e50b7"}