{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:62ZENDTFLMCMGHYXKKRVLJQNTA","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":"5cd1ba76bc7686f232ca7edbb9bc3a793c6d7a3700b1aaf7e187e9e42cac9dd2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-12-22T18:59:11Z","title_canon_sha256":"41086bf6ac832503b010eb6326452bf5cde58a646dfe265418a4e8dd53551c5a"},"schema_version":"1.0","source":{"id":"2012.12260","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2012.12260","created_at":"2026-07-05T03:01:34Z"},{"alias_kind":"arxiv_version","alias_value":"2012.12260v2","created_at":"2026-07-05T03:01:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2012.12260","created_at":"2026-07-05T03:01:34Z"},{"alias_kind":"pith_short_12","alias_value":"62ZENDTFLMCM","created_at":"2026-07-05T03:01:34Z"},{"alias_kind":"pith_short_16","alias_value":"62ZENDTFLMCMGHYX","created_at":"2026-07-05T03:01:34Z"},{"alias_kind":"pith_short_8","alias_value":"62ZENDTF","created_at":"2026-07-05T03:01:34Z"}],"graph_snapshots":[{"event_id":"sha256:d04e456fdfb944c18f2f6090d112b91b7ba16afb713201333353048d77470350","target":"graph","created_at":"2026-07-05T03:01:34Z","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/2012.12260/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose to optimally control the harmonic potential of a levitated nanoparticle to quantum delocalize its center-of-mass motional state to a length scale orders of magnitude larger than the quantum zero-point motion. Using a bang-bang control of the harmonic potential, including the possibility to invert it, the initial ground-state-cooled levitated nanoparticle coherently expands to large scales and then contracts to the initial state in a time-optimal way. We show that this fast loop protocol can be used to enhance force sensing as well as to dramatically boost the entangling rate of two ","authors_text":"E. Torrontegui, M. Aspelmeyer, M. Roda-Llordes, O. Romero-Isart, T. Weiss","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-12-22T18:59:11Z","title":"Large Quantum Delocalization of a Levitated Nanoparticle using Optimal Control: Applications for Force Sensing and Entangling via Weak Forces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2012.12260","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":"sha256:19701c8ac7c3d3a6f7d2462100a369159b04e57a927cee5f05ba0a8b72dc2fc3","target":"record","created_at":"2026-07-05T03:01:34Z","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":"5cd1ba76bc7686f232ca7edbb9bc3a793c6d7a3700b1aaf7e187e9e42cac9dd2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-12-22T18:59:11Z","title_canon_sha256":"41086bf6ac832503b010eb6326452bf5cde58a646dfe265418a4e8dd53551c5a"},"schema_version":"1.0","source":{"id":"2012.12260","kind":"arxiv","version":2}},"canonical_sha256":"f6b2468e655b04c31f1752a355a60d98171e45a3c6067ee3da335d088e3ed832","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6b2468e655b04c31f1752a355a60d98171e45a3c6067ee3da335d088e3ed832","first_computed_at":"2026-07-05T03:01:34.639118Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:01:34.639118Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"daSbllffez7NcomSIykwuS4VG8EbRVski/Pt2sfBL9p3mNJsAaBZMVDJhU90fn4EkjTQ5QTmEZEATYJqLDejAg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:01:34.639509Z","signed_message":"canonical_sha256_bytes"},"source_id":"2012.12260","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:19701c8ac7c3d3a6f7d2462100a369159b04e57a927cee5f05ba0a8b72dc2fc3","sha256:d04e456fdfb944c18f2f6090d112b91b7ba16afb713201333353048d77470350"],"state_sha256":"77164149c6a9ab0cd408b9ef4390e9a399a7ba1120421f891ac687aea32df366"}