{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:64IZTMFIOSPFWXTY4RQOJWZEWL","short_pith_number":"pith:64IZTMFI","canonical_record":{"source":{"id":"2510.13973","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-10-15T18:02:08Z","cross_cats_sorted":[],"title_canon_sha256":"19caf876ca8aa8d5cbab7df7a668497bf7ea21275abb01f9c23285eb3bc209c3","abstract_canon_sha256":"d329ea17c2e033321dd4fb3f74c2e8ed704865b1f39d0d1b029b354d2a061960"},"schema_version":"1.0"},"canonical_sha256":"f71199b0a8749e5b5e78e460e4db24b2d621d90035c3d33a269d417ef736c27a","source":{"kind":"arxiv","id":"2510.13973","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.13973","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"arxiv_version","alias_value":"2510.13973v3","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.13973","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"pith_short_12","alias_value":"64IZTMFIOSPF","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"pith_short_16","alias_value":"64IZTMFIOSPFWXTY","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"pith_short_8","alias_value":"64IZTMFI","created_at":"2026-05-28T01:05:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:64IZTMFIOSPFWXTY4RQOJWZEWL","target":"record","payload":{"canonical_record":{"source":{"id":"2510.13973","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-10-15T18:02:08Z","cross_cats_sorted":[],"title_canon_sha256":"19caf876ca8aa8d5cbab7df7a668497bf7ea21275abb01f9c23285eb3bc209c3","abstract_canon_sha256":"d329ea17c2e033321dd4fb3f74c2e8ed704865b1f39d0d1b029b354d2a061960"},"schema_version":"1.0"},"canonical_sha256":"f71199b0a8749e5b5e78e460e4db24b2d621d90035c3d33a269d417ef736c27a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T01:05:10.810636Z","signature_b64":"hteLWknx8NZ49cN/KJN0lBjSlRr1nSBjBFP5fO7M+w5gNvlqv1laGMNu8Fb+Xq25ky+O+5qn1VPblAMVXE2JCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f71199b0a8749e5b5e78e460e4db24b2d621d90035c3d33a269d417ef736c27a","last_reissued_at":"2026-05-28T01:05:10.810058Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T01:05:10.810058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2510.13973","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-28T01:05:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VI3AFyLN5y8aw7SQxlCeYw1pPRwmyOQSCUC2/i5bFIxfFO9F21dboIE7iIuciv/2StVvNlK9/ehd/E6uzWB8Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T01:17:01.524199Z"},"content_sha256":"a9efa72bb67691297a630dbc272ba85cecf303650e1359ae38e61da22e14059d","schema_version":"1.0","event_id":"sha256:a9efa72bb67691297a630dbc272ba85cecf303650e1359ae38e61da22e14059d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:64IZTMFIOSPFWXTY4RQOJWZEWL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Towards gravimetry enhancement with squeezed states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Carlos H. S. Vieira, Jonas F. G. Santos, Lucas S. Marinho, Oziel R. de Araujo","submitted_at":"2025-10-15T18:02:08Z","abstract_excerpt":"We investigate the sensitivity of gravitational acceleration estimation using squeezed probe states in a quantum metrology framework. In particular, we analyze how the squeezing phase, beyond its amplitude, affects the attainable precision. We show that probes squeezed along the canonical phase-space quadratures can surpass the shot-noise limit only in specific time regimes, whereas position-momentum correlated input states can consistently overcome this limit across all interaction times. Furthermore, we demonstrate that optimal sensitivity can be achieved by combining projective momentum mea"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.13973","kind":"arxiv","version":3},"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/2510.13973/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":"2026-05-28T01:05:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8eQGZBt91rQz4xIujUyk66guQzDgu576ttzKhrizoL5RKosT4OKrengQTzLTUolVUwO2AbdsyISqAGCSZAyDDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T01:17:01.524616Z"},"content_sha256":"0080721fa3e2559449d6c52d4face55c54692f6317823cc40b0e8872b464990d","schema_version":"1.0","event_id":"sha256:0080721fa3e2559449d6c52d4face55c54692f6317823cc40b0e8872b464990d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/64IZTMFIOSPFWXTY4RQOJWZEWL/bundle.json","state_url":"https://pith.science/pith/64IZTMFIOSPFWXTY4RQOJWZEWL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/64IZTMFIOSPFWXTY4RQOJWZEWL/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":"2026-05-31T01:17:01Z","links":{"resolver":"https://pith.science/pith/64IZTMFIOSPFWXTY4RQOJWZEWL","bundle":"https://pith.science/pith/64IZTMFIOSPFWXTY4RQOJWZEWL/bundle.json","state":"https://pith.science/pith/64IZTMFIOSPFWXTY4RQOJWZEWL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/64IZTMFIOSPFWXTY4RQOJWZEWL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:64IZTMFIOSPFWXTY4RQOJWZEWL","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":"d329ea17c2e033321dd4fb3f74c2e8ed704865b1f39d0d1b029b354d2a061960","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-10-15T18:02:08Z","title_canon_sha256":"19caf876ca8aa8d5cbab7df7a668497bf7ea21275abb01f9c23285eb3bc209c3"},"schema_version":"1.0","source":{"id":"2510.13973","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.13973","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"arxiv_version","alias_value":"2510.13973v3","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.13973","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"pith_short_12","alias_value":"64IZTMFIOSPF","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"pith_short_16","alias_value":"64IZTMFIOSPFWXTY","created_at":"2026-05-28T01:05:10Z"},{"alias_kind":"pith_short_8","alias_value":"64IZTMFI","created_at":"2026-05-28T01:05:10Z"}],"graph_snapshots":[{"event_id":"sha256:0080721fa3e2559449d6c52d4face55c54692f6317823cc40b0e8872b464990d","target":"graph","created_at":"2026-05-28T01:05:10Z","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/2510.13973/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the sensitivity of gravitational acceleration estimation using squeezed probe states in a quantum metrology framework. In particular, we analyze how the squeezing phase, beyond its amplitude, affects the attainable precision. We show that probes squeezed along the canonical phase-space quadratures can surpass the shot-noise limit only in specific time regimes, whereas position-momentum correlated input states can consistently overcome this limit across all interaction times. Furthermore, we demonstrate that optimal sensitivity can be achieved by combining projective momentum mea","authors_text":"Carlos H. S. Vieira, Jonas F. G. Santos, Lucas S. Marinho, Oziel R. de Araujo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-10-15T18:02:08Z","title":"Towards gravimetry enhancement with squeezed states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.13973","kind":"arxiv","version":3},"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:a9efa72bb67691297a630dbc272ba85cecf303650e1359ae38e61da22e14059d","target":"record","created_at":"2026-05-28T01:05:10Z","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":"d329ea17c2e033321dd4fb3f74c2e8ed704865b1f39d0d1b029b354d2a061960","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-10-15T18:02:08Z","title_canon_sha256":"19caf876ca8aa8d5cbab7df7a668497bf7ea21275abb01f9c23285eb3bc209c3"},"schema_version":"1.0","source":{"id":"2510.13973","kind":"arxiv","version":3}},"canonical_sha256":"f71199b0a8749e5b5e78e460e4db24b2d621d90035c3d33a269d417ef736c27a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f71199b0a8749e5b5e78e460e4db24b2d621d90035c3d33a269d417ef736c27a","first_computed_at":"2026-05-28T01:05:10.810058Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-28T01:05:10.810058Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hteLWknx8NZ49cN/KJN0lBjSlRr1nSBjBFP5fO7M+w5gNvlqv1laGMNu8Fb+Xq25ky+O+5qn1VPblAMVXE2JCg==","signature_status":"signed_v1","signed_at":"2026-05-28T01:05:10.810636Z","signed_message":"canonical_sha256_bytes"},"source_id":"2510.13973","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a9efa72bb67691297a630dbc272ba85cecf303650e1359ae38e61da22e14059d","sha256:0080721fa3e2559449d6c52d4face55c54692f6317823cc40b0e8872b464990d"],"state_sha256":"d8d55fb3f258dc0e361cfc472598dff6e7f7d4999337bce015506d8e705ab47f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KI3z1qaQCLtdkVKUX3+ytjEVV7IvlMtGgnXOcCwXmVE2VIc49BEgkGun8RNA8YNIZ6jNYSdmRolA/bMWkfOjAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T01:17:01.526797Z","bundle_sha256":"58b2260e2a308e62fb439903242d3d9c1d9917e98012e3041fa8d5094b373adf"}}