{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:GMI7BFNNAM7EUNYPNSK77ZE37L","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":"8e5ec714654443cab27ac79d20fd4096f9ca60ec440e6a67666aca6924e34e4a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-05-10T05:23:18Z","title_canon_sha256":"647d8fa43db93fcf64104e65b3ecb7b8454dca9bcc712101325cf33554425815"},"schema_version":"1.0","source":{"id":"1105.1856","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1105.1856","created_at":"2026-05-18T04:13:39Z"},{"alias_kind":"arxiv_version","alias_value":"1105.1856v2","created_at":"2026-05-18T04:13:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1105.1856","created_at":"2026-05-18T04:13:39Z"},{"alias_kind":"pith_short_12","alias_value":"GMI7BFNNAM7E","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_16","alias_value":"GMI7BFNNAM7EUNYP","created_at":"2026-05-18T12:26:30Z"},{"alias_kind":"pith_short_8","alias_value":"GMI7BFNN","created_at":"2026-05-18T12:26:30Z"}],"graph_snapshots":[{"event_id":"sha256:9ec9f643623f9f4b76c798168aede2a7d654c14cde92bcac7fcc5e5c69cdbc87","target":"graph","created_at":"2026-05-18T04:13:39Z","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 study theoretically the dynamics of a a hybrid optomechanical system consisting of a macroscopic mechanical membrane magnetically coupled to a spinor Bose-Einstein condensate via a nanomagnet attached at the membrane center. We demonstrate that this coupling permits us to monitor indirectly the center-of-mass position of the membrane via measurements of the spin of the condensed atoms. These measurements normally induce a significant backaction on the membrane motion, which we quantify for the cases of thermal and coherent initial states of the membrane. We discuss the possibility of measur","authors_text":"K. C. Schwab, M. E. Tasgin, M. Vengalattore, P. Meystre, S. K. Steinke, S. Singh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-05-10T05:23:18Z","title":"Quantum measurement backaction from a BEC coupled to a mechanical oscillator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1105.1856","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":"sha256:406401744e68b925341690a3eeb82851639069154d320a40ed7337c144e80939","target":"record","created_at":"2026-05-18T04:13:39Z","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":"8e5ec714654443cab27ac79d20fd4096f9ca60ec440e6a67666aca6924e34e4a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-05-10T05:23:18Z","title_canon_sha256":"647d8fa43db93fcf64104e65b3ecb7b8454dca9bcc712101325cf33554425815"},"schema_version":"1.0","source":{"id":"1105.1856","kind":"arxiv","version":2}},"canonical_sha256":"3311f095ad033e4a370f6c95ffe49bfade7d2130ce719fb4351268dc7a53796f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3311f095ad033e4a370f6c95ffe49bfade7d2130ce719fb4351268dc7a53796f","first_computed_at":"2026-05-18T04:13:39.060624Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:13:39.060624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J13zuXTYDW9D2Ls2UoJbg16aAk5Xj1PckhTJQQzpshAFJvLUEHhOJzpAerawhI2jvprqMJHszHpLRjQhb1KLCA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:13:39.061174Z","signed_message":"canonical_sha256_bytes"},"source_id":"1105.1856","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:406401744e68b925341690a3eeb82851639069154d320a40ed7337c144e80939","sha256:9ec9f643623f9f4b76c798168aede2a7d654c14cde92bcac7fcc5e5c69cdbc87"],"state_sha256":"e4bee501987de256e353c6f0da8b97b7f6f78f5eb62c734c3e8897a38e6934ed"}