{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:YFPWJISWW5M6RMFV5TVJWDTGIR","short_pith_number":"pith:YFPWJISW","canonical_record":{"source":{"id":"2211.08435","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-11-15T19:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"39873a7bf3643c36f8a8b453a716150d97e298ba44ff8538c1e05886b0048619","abstract_canon_sha256":"de667fa7cbe776b1077df8f3ee85c944638c23c24d8aa4aea867f7072ac05e1b"},"schema_version":"1.0"},"canonical_sha256":"c15f64a256b759e8b0b5ecea9b0e66444798e4f90b1000510e8205ba6d4f900c","source":{"kind":"arxiv","id":"2211.08435","version":5},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.08435","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"arxiv_version","alias_value":"2211.08435v5","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.08435","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"pith_short_12","alias_value":"YFPWJISWW5M6","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"pith_short_16","alias_value":"YFPWJISWW5M6RMFV","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"pith_short_8","alias_value":"YFPWJISW","created_at":"2026-07-05T07:18:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:YFPWJISWW5M6RMFV5TVJWDTGIR","target":"record","payload":{"canonical_record":{"source":{"id":"2211.08435","kind":"arxiv","version":5},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-11-15T19:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"39873a7bf3643c36f8a8b453a716150d97e298ba44ff8538c1e05886b0048619","abstract_canon_sha256":"de667fa7cbe776b1077df8f3ee85c944638c23c24d8aa4aea867f7072ac05e1b"},"schema_version":"1.0"},"canonical_sha256":"c15f64a256b759e8b0b5ecea9b0e66444798e4f90b1000510e8205ba6d4f900c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:18:54.875333Z","signature_b64":"8aikUKnG5GuW4II1r2mLoryEXQN3/cih+2eq7snqCrgBszHbbmhCDKZa3ZZLJ5LyosOu+/QNTgshuu32YJQ3AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c15f64a256b759e8b0b5ecea9b0e66444798e4f90b1000510e8205ba6d4f900c","last_reissued_at":"2026-07-05T07:18:54.874980Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:18:54.874980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.08435","source_version":5,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:18:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xoCfNEIdcQanPjOdYt9EeF8eANUCEjG93vvYKup3yzMZcowmsnUab/TF6uO4gdcvG4I7c/6lQgktUJ004DTyAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T21:12:14.954773Z"},"content_sha256":"b77893803528cdf1c6f4fd3bc99913cfe0ad89ce738fc5585b95de6dc6509903","schema_version":"1.0","event_id":"sha256:b77893803528cdf1c6f4fd3bc99913cfe0ad89ce738fc5585b95de6dc6509903"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:YFPWJISWW5M6RMFV5TVJWDTGIR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gravito-diamagnetic forces for mass independent large spatial superpositions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anupam Mazumdar, Run Zhou, Ryan J. Marshman, Sougato Bose","submitted_at":"2022-11-15T19:00:01Z","abstract_excerpt":"Creating a massive spatial quantum superposition, such as the Schr\\\"odinger cat state, where the mass and the superposition size within the range $10^{-19}-10^{-14}$ kg and $\\Delta x \\sim 10~{\\rm nm}-100~\\mu {\\rm m}$, is a challenging task. The methods employed so far rely either on wavepacket expansion or on a quantum ancilla, e.g. single spin dependent forces, which scale inversely with mass. In this paper, we present a novel approach that combines gravitational acceleration and diamagnetic repulsion to generate a large spatial superposition in a relatively short time. After first creating a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.08435","kind":"arxiv","version":5},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2211.08435/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T07:18:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VFpH3hp11lmk7KuevnNI9ayvXSUEJAlr5cJbJrOysCt/ro4GuVMBXHhK6BLqpuAP6Ce7S3bxmfBh2g3kvz72Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T21:12:14.955325Z"},"content_sha256":"91905c9d5d9012b80731701c23e6e5fb68f890ec300306347157f48e3908ddad","schema_version":"1.0","event_id":"sha256:91905c9d5d9012b80731701c23e6e5fb68f890ec300306347157f48e3908ddad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YFPWJISWW5M6RMFV5TVJWDTGIR/bundle.json","state_url":"https://pith.science/pith/YFPWJISWW5M6RMFV5TVJWDTGIR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YFPWJISWW5M6RMFV5TVJWDTGIR/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":"2026-08-11T21:12:14Z","links":{"resolver":"https://pith.science/pith/YFPWJISWW5M6RMFV5TVJWDTGIR","bundle":"https://pith.science/pith/YFPWJISWW5M6RMFV5TVJWDTGIR/bundle.json","state":"https://pith.science/pith/YFPWJISWW5M6RMFV5TVJWDTGIR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YFPWJISWW5M6RMFV5TVJWDTGIR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:YFPWJISWW5M6RMFV5TVJWDTGIR","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":"de667fa7cbe776b1077df8f3ee85c944638c23c24d8aa4aea867f7072ac05e1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-11-15T19:00:01Z","title_canon_sha256":"39873a7bf3643c36f8a8b453a716150d97e298ba44ff8538c1e05886b0048619"},"schema_version":"1.0","source":{"id":"2211.08435","kind":"arxiv","version":5}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.08435","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"arxiv_version","alias_value":"2211.08435v5","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.08435","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"pith_short_12","alias_value":"YFPWJISWW5M6","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"pith_short_16","alias_value":"YFPWJISWW5M6RMFV","created_at":"2026-07-05T07:18:54Z"},{"alias_kind":"pith_short_8","alias_value":"YFPWJISW","created_at":"2026-07-05T07:18:54Z"}],"graph_snapshots":[{"event_id":"sha256:91905c9d5d9012b80731701c23e6e5fb68f890ec300306347157f48e3908ddad","target":"graph","created_at":"2026-07-05T07:18:54Z","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/2211.08435/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Creating a massive spatial quantum superposition, such as the Schr\\\"odinger cat state, where the mass and the superposition size within the range $10^{-19}-10^{-14}$ kg and $\\Delta x \\sim 10~{\\rm nm}-100~\\mu {\\rm m}$, is a challenging task. The methods employed so far rely either on wavepacket expansion or on a quantum ancilla, e.g. single spin dependent forces, which scale inversely with mass. In this paper, we present a novel approach that combines gravitational acceleration and diamagnetic repulsion to generate a large spatial superposition in a relatively short time. After first creating a","authors_text":"Anupam Mazumdar, Run Zhou, Ryan J. Marshman, Sougato Bose","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-11-15T19:00:01Z","title":"Gravito-diamagnetic forces for mass independent large spatial superpositions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.08435","kind":"arxiv","version":5},"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:b77893803528cdf1c6f4fd3bc99913cfe0ad89ce738fc5585b95de6dc6509903","target":"record","created_at":"2026-07-05T07:18:54Z","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":"de667fa7cbe776b1077df8f3ee85c944638c23c24d8aa4aea867f7072ac05e1b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2022-11-15T19:00:01Z","title_canon_sha256":"39873a7bf3643c36f8a8b453a716150d97e298ba44ff8538c1e05886b0048619"},"schema_version":"1.0","source":{"id":"2211.08435","kind":"arxiv","version":5}},"canonical_sha256":"c15f64a256b759e8b0b5ecea9b0e66444798e4f90b1000510e8205ba6d4f900c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c15f64a256b759e8b0b5ecea9b0e66444798e4f90b1000510e8205ba6d4f900c","first_computed_at":"2026-07-05T07:18:54.874980Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:18:54.874980Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8aikUKnG5GuW4II1r2mLoryEXQN3/cih+2eq7snqCrgBszHbbmhCDKZa3ZZLJ5LyosOu+/QNTgshuu32YJQ3AA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:18:54.875333Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.08435","source_kind":"arxiv","source_version":5}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b77893803528cdf1c6f4fd3bc99913cfe0ad89ce738fc5585b95de6dc6509903","sha256:91905c9d5d9012b80731701c23e6e5fb68f890ec300306347157f48e3908ddad"],"state_sha256":"15c338bcf7406bcb06cfcb196bbc4ed22306e6418f1005fe01ff4528c16e40c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NyFlyRSoa88sQHJ4Yfewnmrm3n3CnChECzUZODut53pE3sWJ0l+zKu+dwZWfhkbdPPVuWfx6YyBlskMDxmEgAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T21:12:14.959581Z","bundle_sha256":"4f10076f8a628f92d8c8136db3d01961c653a1cb2d284758e9b9694c852b237d"}}