{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:77IJ6TML74NM7337UJOH45L3OP","short_pith_number":"pith:77IJ6TML","canonical_record":{"source":{"id":"1805.08042","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-21T13:36:25Z","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"title_canon_sha256":"df6f88c3daf3b330af919cc62f89f2781e390fad55eee5d1791a00f1e34e8a17","abstract_canon_sha256":"53102d94dad4767833c7616823771491889e6ecafdcb53a822733924256767ad"},"schema_version":"1.0"},"canonical_sha256":"ffd09f4d8bff1acfef7fa25c7e757b73c3023fc06654c5322fd3eca1765275de","source":{"kind":"arxiv","id":"1805.08042","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08042","created_at":"2026-05-17T23:57:36Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08042v2","created_at":"2026-05-17T23:57:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08042","created_at":"2026-05-17T23:57:36Z"},{"alias_kind":"pith_short_12","alias_value":"77IJ6TML74NM","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"77IJ6TML74NM7337","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"77IJ6TML","created_at":"2026-05-18T12:32:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:77IJ6TML74NM7337UJOH45L3OP","target":"record","payload":{"canonical_record":{"source":{"id":"1805.08042","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-21T13:36:25Z","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"title_canon_sha256":"df6f88c3daf3b330af919cc62f89f2781e390fad55eee5d1791a00f1e34e8a17","abstract_canon_sha256":"53102d94dad4767833c7616823771491889e6ecafdcb53a822733924256767ad"},"schema_version":"1.0"},"canonical_sha256":"ffd09f4d8bff1acfef7fa25c7e757b73c3023fc06654c5322fd3eca1765275de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:36.569173Z","signature_b64":"ddFdLk8CpeWXlYtGwdDn13y1Y+3M2Fl2vvPpME0AlMSrr1VrtNZbcxTnolFoFcXvWe5vAN8RsjcbQvQgds7UDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ffd09f4d8bff1acfef7fa25c7e757b73c3023fc06654c5322fd3eca1765275de","last_reissued_at":"2026-05-17T23:57:36.568726Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:36.568726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.08042","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:57:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n0/Neb5+egyA2eaTQ/SseY10Q66l6m/2+qO2TfzH6GWNlwqijsG3cfBAgh9tVUqW8Plxz43lp0AQcAnOpYeaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:31:48.022817Z"},"content_sha256":"51f36948dfaf9c588335dfc4b0eb074c3f97d43f13776b3c8daab503b115fd46","schema_version":"1.0","event_id":"sha256:51f36948dfaf9c588335dfc4b0eb074c3f97d43f13776b3c8daab503b115fd46"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:77IJ6TML74NM7337UJOH45L3OP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precession Motion in Levitated Optomechanics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"primary_cat":"quant-ph","authors_text":"Ashley Setter, Hendrik Ulbricht, Marko Toro\\v{s}, Muddassar Rashid","submitted_at":"2018-05-21T13:36:25Z","abstract_excerpt":"We investigate experimentally the dynamics of a non-spherical levitated nanoparticle in vacuum. In addition to translation and rotation motion, we observe the light torque-induced precession and nutation of the trapped particle. We provide a theoretical model, which we numerically simulate and from which we derive approximate expressions for the motional frequencies. Both, the simulation and approximate expressions, we find in good agreement with experiments. We measure a torque of $1.9 \\pm 0.5 \\times 10^{-23}$ Nm at $1 \\times 10^{-1}$ mbar, with an estimated torque sensitivity of $3.6 \\pm 1.1"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08042","kind":"arxiv","version":2},"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":"2026-05-17T23:57:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zlje8LxbINRcUgqMnwbk//viFZbH8wtZGCyAIfPxMVAND5alVdihyRWO/jkN4eoUpM8cyqiNDX2m/awYdEMHAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T23:31:48.023180Z"},"content_sha256":"c3c2e8e50e4f2e23ef0904e641b6403adad19ba32e39bcca6602b5c07826f43e","schema_version":"1.0","event_id":"sha256:c3c2e8e50e4f2e23ef0904e641b6403adad19ba32e39bcca6602b5c07826f43e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/77IJ6TML74NM7337UJOH45L3OP/bundle.json","state_url":"https://pith.science/pith/77IJ6TML74NM7337UJOH45L3OP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/77IJ6TML74NM7337UJOH45L3OP/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":"2026-05-26T23:31:48Z","links":{"resolver":"https://pith.science/pith/77IJ6TML74NM7337UJOH45L3OP","bundle":"https://pith.science/pith/77IJ6TML74NM7337UJOH45L3OP/bundle.json","state":"https://pith.science/pith/77IJ6TML74NM7337UJOH45L3OP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/77IJ6TML74NM7337UJOH45L3OP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:77IJ6TML74NM7337UJOH45L3OP","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":"53102d94dad4767833c7616823771491889e6ecafdcb53a822733924256767ad","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-21T13:36:25Z","title_canon_sha256":"df6f88c3daf3b330af919cc62f89f2781e390fad55eee5d1791a00f1e34e8a17"},"schema_version":"1.0","source":{"id":"1805.08042","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.08042","created_at":"2026-05-17T23:57:36Z"},{"alias_kind":"arxiv_version","alias_value":"1805.08042v2","created_at":"2026-05-17T23:57:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.08042","created_at":"2026-05-17T23:57:36Z"},{"alias_kind":"pith_short_12","alias_value":"77IJ6TML74NM","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_16","alias_value":"77IJ6TML74NM7337","created_at":"2026-05-18T12:32:11Z"},{"alias_kind":"pith_short_8","alias_value":"77IJ6TML","created_at":"2026-05-18T12:32:11Z"}],"graph_snapshots":[{"event_id":"sha256:c3c2e8e50e4f2e23ef0904e641b6403adad19ba32e39bcca6602b5c07826f43e","target":"graph","created_at":"2026-05-17T23:57:36Z","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 investigate experimentally the dynamics of a non-spherical levitated nanoparticle in vacuum. In addition to translation and rotation motion, we observe the light torque-induced precession and nutation of the trapped particle. We provide a theoretical model, which we numerically simulate and from which we derive approximate expressions for the motional frequencies. Both, the simulation and approximate expressions, we find in good agreement with experiments. We measure a torque of $1.9 \\pm 0.5 \\times 10^{-23}$ Nm at $1 \\times 10^{-1}$ mbar, with an estimated torque sensitivity of $3.6 \\pm 1.1","authors_text":"Ashley Setter, Hendrik Ulbricht, Marko Toro\\v{s}, Muddassar Rashid","cross_cats":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-21T13:36:25Z","title":"Precession Motion in Levitated Optomechanics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.08042","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":"sha256:51f36948dfaf9c588335dfc4b0eb074c3f97d43f13776b3c8daab503b115fd46","target":"record","created_at":"2026-05-17T23:57:36Z","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":"53102d94dad4767833c7616823771491889e6ecafdcb53a822733924256767ad","cross_cats_sorted":["cond-mat.mes-hall","physics.app-ph","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-21T13:36:25Z","title_canon_sha256":"df6f88c3daf3b330af919cc62f89f2781e390fad55eee5d1791a00f1e34e8a17"},"schema_version":"1.0","source":{"id":"1805.08042","kind":"arxiv","version":2}},"canonical_sha256":"ffd09f4d8bff1acfef7fa25c7e757b73c3023fc06654c5322fd3eca1765275de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ffd09f4d8bff1acfef7fa25c7e757b73c3023fc06654c5322fd3eca1765275de","first_computed_at":"2026-05-17T23:57:36.568726Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:57:36.568726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ddFdLk8CpeWXlYtGwdDn13y1Y+3M2Fl2vvPpME0AlMSrr1VrtNZbcxTnolFoFcXvWe5vAN8RsjcbQvQgds7UDg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:57:36.569173Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.08042","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51f36948dfaf9c588335dfc4b0eb074c3f97d43f13776b3c8daab503b115fd46","sha256:c3c2e8e50e4f2e23ef0904e641b6403adad19ba32e39bcca6602b5c07826f43e"],"state_sha256":"916e8ca2f793a81ab6b662954f29759eb9611197249b46e9a5d364c4a11bbb93"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ECi9HWcHx7LFY9MeHgVEY93A9uGVb1cc72jmdjKt7zXfndhIHNsHZeOgaeZhvHFPsCzO0GhQxx+OpULC+YKFDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T23:31:48.025544Z","bundle_sha256":"7bcc0a7d1cceb1caabb33b52b7356c156f546a71580c34051fbfa2f5348f33e1"}}