{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XQSU7TRGC3GWLH4B3O3CQQQBRS","short_pith_number":"pith:XQSU7TRG","canonical_record":{"source":{"id":"1806.06008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-06-15T15:04:32Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"1f232124cb80cc0b0c59e3eef3d6593632b8ff506559271edffa8e83b24459e5","abstract_canon_sha256":"83cf04d1a89ee5a54cda177f689fec656922f6523b3d1d6b79fc63fece142789"},"schema_version":"1.0"},"canonical_sha256":"bc254fce2616cd659f81dbb62842018ca29ecad9474807ddea7f2e837cc444d6","source":{"kind":"arxiv","id":"1806.06008","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.06008","created_at":"2026-05-18T00:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"1806.06008v1","created_at":"2026-05-18T00:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.06008","created_at":"2026-05-18T00:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"XQSU7TRGC3GW","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XQSU7TRGC3GWLH4B","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XQSU7TRG","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XQSU7TRGC3GWLH4B3O3CQQQBRS","target":"record","payload":{"canonical_record":{"source":{"id":"1806.06008","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-06-15T15:04:32Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"1f232124cb80cc0b0c59e3eef3d6593632b8ff506559271edffa8e83b24459e5","abstract_canon_sha256":"83cf04d1a89ee5a54cda177f689fec656922f6523b3d1d6b79fc63fece142789"},"schema_version":"1.0"},"canonical_sha256":"bc254fce2616cd659f81dbb62842018ca29ecad9474807ddea7f2e837cc444d6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:46.617937Z","signature_b64":"YvI5ssRSu+4Wf2C3b0O6gDFOre7rZhx2EhQRHeOcB1ludt6/e+pY87KzV4+xP4CpeQA2cbcVtaxl94nog6JZAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc254fce2616cd659f81dbb62842018ca29ecad9474807ddea7f2e837cc444d6","last_reissued_at":"2026-05-18T00:03:46.617378Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:46.617378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1806.06008","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":"2026-05-18T00:03:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uXDaO6EqcijwXeX9obPx+i5aje4RbP0eW5YfMQZnu3E0EGGmCdQWf00a8SQSVMfuELCfrF5RG9CHdL0cnQvdCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:38:03.249813Z"},"content_sha256":"c7f88f2d5c21eff229f6aa03fe5e5b3ee4b5bda83cb10a5d439e53e26f295b97","schema_version":"1.0","event_id":"sha256:c7f88f2d5c21eff229f6aa03fe5e5b3ee4b5bda83cb10a5d439e53e26f295b97"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XQSU7TRGC3GWLH4B3O3CQQQBRS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Optomechanical Quantum Cavendish Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"quant-ph","authors_text":"Abdulrahim Al Balushi, Robert B. Mann, Wan Cong","submitted_at":"2018-06-15T15:04:32Z","abstract_excerpt":"An open question in experimental physics is the characterization of gravitational effects in quantum regimes. We propose an experimental set-up that uses well-tested techniques in cavity optomechanics to observe the effects of the gravitational interaction between two micro-mechanical oscillators on the interference of the cavity photons through the shifts in the visibility of interfering photons. The gravitational coupling leads to a shift in the period and magnitude of the visibility whose observability is within reach of current technology. We discuss the feasibility of the set-up as well a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.06008","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":"2026-05-18T00:03:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8wytg/lAuw5vI9C6Bysa1TEzpZRDILPNd9e4TgzbXODqtBry53cu9Xa5EPC6cLReFxHi7id+9QbZYw6fFEcXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-09T10:38:03.250602Z"},"content_sha256":"cb51b9995052ae13d07cdad0eb846ed9a9d4f7d9ec08d6fc998ba6a75fa1cfce","schema_version":"1.0","event_id":"sha256:cb51b9995052ae13d07cdad0eb846ed9a9d4f7d9ec08d6fc998ba6a75fa1cfce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS/bundle.json","state_url":"https://pith.science/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS/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":"2026-06-09T10:38:03Z","links":{"resolver":"https://pith.science/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS","bundle":"https://pith.science/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS/bundle.json","state":"https://pith.science/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XQSU7TRGC3GWLH4B3O3CQQQBRS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XQSU7TRGC3GWLH4B3O3CQQQBRS","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":"83cf04d1a89ee5a54cda177f689fec656922f6523b3d1d6b79fc63fece142789","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-06-15T15:04:32Z","title_canon_sha256":"1f232124cb80cc0b0c59e3eef3d6593632b8ff506559271edffa8e83b24459e5"},"schema_version":"1.0","source":{"id":"1806.06008","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1806.06008","created_at":"2026-05-18T00:03:46Z"},{"alias_kind":"arxiv_version","alias_value":"1806.06008v1","created_at":"2026-05-18T00:03:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.06008","created_at":"2026-05-18T00:03:46Z"},{"alias_kind":"pith_short_12","alias_value":"XQSU7TRGC3GW","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XQSU7TRGC3GWLH4B","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XQSU7TRG","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:cb51b9995052ae13d07cdad0eb846ed9a9d4f7d9ec08d6fc998ba6a75fa1cfce","target":"graph","created_at":"2026-05-18T00:03:46Z","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":"An open question in experimental physics is the characterization of gravitational effects in quantum regimes. We propose an experimental set-up that uses well-tested techniques in cavity optomechanics to observe the effects of the gravitational interaction between two micro-mechanical oscillators on the interference of the cavity photons through the shifts in the visibility of interfering photons. The gravitational coupling leads to a shift in the period and magnitude of the visibility whose observability is within reach of current technology. We discuss the feasibility of the set-up as well a","authors_text":"Abdulrahim Al Balushi, Robert B. Mann, Wan Cong","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-06-15T15:04:32Z","title":"An Optomechanical Quantum Cavendish Experiment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.06008","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:c7f88f2d5c21eff229f6aa03fe5e5b3ee4b5bda83cb10a5d439e53e26f295b97","target":"record","created_at":"2026-05-18T00:03:46Z","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":"83cf04d1a89ee5a54cda177f689fec656922f6523b3d1d6b79fc63fece142789","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-06-15T15:04:32Z","title_canon_sha256":"1f232124cb80cc0b0c59e3eef3d6593632b8ff506559271edffa8e83b24459e5"},"schema_version":"1.0","source":{"id":"1806.06008","kind":"arxiv","version":1}},"canonical_sha256":"bc254fce2616cd659f81dbb62842018ca29ecad9474807ddea7f2e837cc444d6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc254fce2616cd659f81dbb62842018ca29ecad9474807ddea7f2e837cc444d6","first_computed_at":"2026-05-18T00:03:46.617378Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:46.617378Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YvI5ssRSu+4Wf2C3b0O6gDFOre7rZhx2EhQRHeOcB1ludt6/e+pY87KzV4+xP4CpeQA2cbcVtaxl94nog6JZAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:46.617937Z","signed_message":"canonical_sha256_bytes"},"source_id":"1806.06008","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7f88f2d5c21eff229f6aa03fe5e5b3ee4b5bda83cb10a5d439e53e26f295b97","sha256:cb51b9995052ae13d07cdad0eb846ed9a9d4f7d9ec08d6fc998ba6a75fa1cfce"],"state_sha256":"9f44431849f6890a9e7cc3589d12120756f9e044522d1643e195c8f66bf06278"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7uy7t/bm2tGCo5U2BublyPm11weOK1bu4ECMZ7yju3FhjOb3DKT5G2yHU+21uAN6Qoa3rvucNlm/Pr33FouGBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-09T10:38:03.254613Z","bundle_sha256":"cabdb9eb8de4a9a95c478a2011505646e9cb815f6619a87b98efeabae6b6cd48"}}