{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:T4ZMFZVAGKMR326KWIL7IRU64F","short_pith_number":"pith:T4ZMFZVA","canonical_record":{"source":{"id":"1512.01838","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-06T21:30:36Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"dd5eb8cb31493d2f8c5f7cdf30034c94090ee71232abad1c5ddf00db8d1d5038","abstract_canon_sha256":"265a8cb2e9510d55d118ca7173b1f9ac816ac06889a84fac19f92383376dc593"},"schema_version":"1.0"},"canonical_sha256":"9f32c2e6a032991debcab217f4469ee157885f2997e9c566e5631202d0cce2d2","source":{"kind":"arxiv","id":"1512.01838","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01838","created_at":"2026-05-18T01:17:18Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01838v1","created_at":"2026-05-18T01:17:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01838","created_at":"2026-05-18T01:17:18Z"},{"alias_kind":"pith_short_12","alias_value":"T4ZMFZVAGKMR","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T4ZMFZVAGKMR326K","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T4ZMFZVA","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:T4ZMFZVAGKMR326KWIL7IRU64F","target":"record","payload":{"canonical_record":{"source":{"id":"1512.01838","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-06T21:30:36Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"dd5eb8cb31493d2f8c5f7cdf30034c94090ee71232abad1c5ddf00db8d1d5038","abstract_canon_sha256":"265a8cb2e9510d55d118ca7173b1f9ac816ac06889a84fac19f92383376dc593"},"schema_version":"1.0"},"canonical_sha256":"9f32c2e6a032991debcab217f4469ee157885f2997e9c566e5631202d0cce2d2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:17:18.143213Z","signature_b64":"2WmSIdeLy5sbpFeZJk+DK/I8rawCVJ1v1Q4C+wqbtXkch7jinnoPJZQW0b2z5yc1HlzW+WEzHvABgOf+8IoCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f32c2e6a032991debcab217f4469ee157885f2997e9c566e5631202d0cce2d2","last_reissued_at":"2026-05-18T01:17:18.142635Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:17:18.142635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.01838","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:17:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Jem2RcgkjX+rD7ptYJfN0714BdGFZueCmv1EiWe8S0BDbPB1+D75ETUyoLRYwFfPjfmdl18iwyvxmoNSHJRCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T14:47:00.166924Z"},"content_sha256":"f9db03f4a091189ae3309f29225179db7c43f0deb41bf39e96dcfe09478744c5","schema_version":"1.0","event_id":"sha256:f9db03f4a091189ae3309f29225179db7c43f0deb41bf39e96dcfe09478744c5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:T4ZMFZVAGKMR326KWIL7IRU64F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of quantum interference between separated mechanical oscillator wavepackets","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"C. Fl\\\"uhmann, D. Kienzler, D. Nadlinger, H.-Y. Lo, J. P. Home, M. Marinelli, V. Negnevitsky","submitted_at":"2015-12-06T21:30:36Z","abstract_excerpt":"The ability of matter to be superposed at two different locations while being intrinsically connected by a quantum phase is among the most counterintuitive predictions of quantum physics. While such superpositions have been created for a variety of systems, the in-situ observation of the phase coherence has remained out of reach. Using a heralding measurement on a spin-oscillator entangled state, we project a mechanical trapped-ion oscillator into a superposition of two spatially separated states, a situation analogous to Schr\\\"odinger's cat. Quantum interference is clearly observed by extract"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01838","kind":"arxiv","version":1},"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":"2026-05-18T01:17:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tWb/ipgP+DrY4YZSeEJSTzlUHMJ49FtGtSAthFR7SZk/fjex1RXrge+QjtMWvUGz859QyafhSaVx1dL85dwOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T14:47:00.167348Z"},"content_sha256":"17901ee4ae0a319dee5ba5b8e34e64c1bcf33dea3d9c27c51665529a02d366ce","schema_version":"1.0","event_id":"sha256:17901ee4ae0a319dee5ba5b8e34e64c1bcf33dea3d9c27c51665529a02d366ce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T4ZMFZVAGKMR326KWIL7IRU64F/bundle.json","state_url":"https://pith.science/pith/T4ZMFZVAGKMR326KWIL7IRU64F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T4ZMFZVAGKMR326KWIL7IRU64F/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":"2026-06-27T14:47:00Z","links":{"resolver":"https://pith.science/pith/T4ZMFZVAGKMR326KWIL7IRU64F","bundle":"https://pith.science/pith/T4ZMFZVAGKMR326KWIL7IRU64F/bundle.json","state":"https://pith.science/pith/T4ZMFZVAGKMR326KWIL7IRU64F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T4ZMFZVAGKMR326KWIL7IRU64F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:T4ZMFZVAGKMR326KWIL7IRU64F","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":"265a8cb2e9510d55d118ca7173b1f9ac816ac06889a84fac19f92383376dc593","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-06T21:30:36Z","title_canon_sha256":"dd5eb8cb31493d2f8c5f7cdf30034c94090ee71232abad1c5ddf00db8d1d5038"},"schema_version":"1.0","source":{"id":"1512.01838","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.01838","created_at":"2026-05-18T01:17:18Z"},{"alias_kind":"arxiv_version","alias_value":"1512.01838v1","created_at":"2026-05-18T01:17:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.01838","created_at":"2026-05-18T01:17:18Z"},{"alias_kind":"pith_short_12","alias_value":"T4ZMFZVAGKMR","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"T4ZMFZVAGKMR326K","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"T4ZMFZVA","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:17901ee4ae0a319dee5ba5b8e34e64c1bcf33dea3d9c27c51665529a02d366ce","target":"graph","created_at":"2026-05-18T01:17:18Z","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":"The ability of matter to be superposed at two different locations while being intrinsically connected by a quantum phase is among the most counterintuitive predictions of quantum physics. While such superpositions have been created for a variety of systems, the in-situ observation of the phase coherence has remained out of reach. Using a heralding measurement on a spin-oscillator entangled state, we project a mechanical trapped-ion oscillator into a superposition of two spatially separated states, a situation analogous to Schr\\\"odinger's cat. Quantum interference is clearly observed by extract","authors_text":"C. Fl\\\"uhmann, D. Kienzler, D. Nadlinger, H.-Y. Lo, J. P. Home, M. Marinelli, V. Negnevitsky","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-06T21:30:36Z","title":"Observation of quantum interference between separated mechanical oscillator wavepackets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.01838","kind":"arxiv","version":1},"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:f9db03f4a091189ae3309f29225179db7c43f0deb41bf39e96dcfe09478744c5","target":"record","created_at":"2026-05-18T01:17:18Z","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":"265a8cb2e9510d55d118ca7173b1f9ac816ac06889a84fac19f92383376dc593","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-12-06T21:30:36Z","title_canon_sha256":"dd5eb8cb31493d2f8c5f7cdf30034c94090ee71232abad1c5ddf00db8d1d5038"},"schema_version":"1.0","source":{"id":"1512.01838","kind":"arxiv","version":1}},"canonical_sha256":"9f32c2e6a032991debcab217f4469ee157885f2997e9c566e5631202d0cce2d2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9f32c2e6a032991debcab217f4469ee157885f2997e9c566e5631202d0cce2d2","first_computed_at":"2026-05-18T01:17:18.142635Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:18.142635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2WmSIdeLy5sbpFeZJk+DK/I8rawCVJ1v1Q4C+wqbtXkch7jinnoPJZQW0b2z5yc1HlzW+WEzHvABgOf+8IoCDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:18.143213Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.01838","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9db03f4a091189ae3309f29225179db7c43f0deb41bf39e96dcfe09478744c5","sha256:17901ee4ae0a319dee5ba5b8e34e64c1bcf33dea3d9c27c51665529a02d366ce"],"state_sha256":"8673798c4281fe70bd58a4dc6a69748c92fa8617c4278cbe3518c09107676ccd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F5OHwkXrWzG9GEfzD5eR06otFTQNI6a7nW5/5DVxqm5IS7zt0WqVThwur6ugwR5yFYCXzZiuTmLlGjMJ1uhvBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T14:47:00.169249Z","bundle_sha256":"901e734e0d7c28f5b21a7ce08fee957ce3f4b47e1b731aa3ba44ffbd46c820e0"}}