{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:OGIC2ZJPBKSDLOB32LQYK2PWII","short_pith_number":"pith:OGIC2ZJP","canonical_record":{"source":{"id":"1609.07265","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-23T08:25:19Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"b335a4100c12f7e2f7d39cb75f3ecb5816afb8cf86a9ad4b9c6f23d5875b467e","abstract_canon_sha256":"ceba0f9bbe3a93e27196c551b3f6820cce5bac0da24f9d78fcd6f347b5d7c6c0"},"schema_version":"1.0"},"canonical_sha256":"71902d652f0aa435b83bd2e18569f6421ee54ea51851bed68ee4ab45b83f2e2c","source":{"kind":"arxiv","id":"1609.07265","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.07265","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"arxiv_version","alias_value":"1609.07265v1","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.07265","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"pith_short_12","alias_value":"OGIC2ZJPBKSD","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OGIC2ZJPBKSDLOB3","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OGIC2ZJP","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:OGIC2ZJPBKSDLOB32LQYK2PWII","target":"record","payload":{"canonical_record":{"source":{"id":"1609.07265","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-23T08:25:19Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"b335a4100c12f7e2f7d39cb75f3ecb5816afb8cf86a9ad4b9c6f23d5875b467e","abstract_canon_sha256":"ceba0f9bbe3a93e27196c551b3f6820cce5bac0da24f9d78fcd6f347b5d7c6c0"},"schema_version":"1.0"},"canonical_sha256":"71902d652f0aa435b83bd2e18569f6421ee54ea51851bed68ee4ab45b83f2e2c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:07.073297Z","signature_b64":"+idJr6EGVa5XJBYH32wpSVg1Cw/Jr5sVci2akVWqhgjBgUk7h72qTAPumJDAFLdcWkry1rteDPk74ekfchYoDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"71902d652f0aa435b83bd2e18569f6421ee54ea51851bed68ee4ab45b83f2e2c","last_reissued_at":"2026-05-18T00:51:07.072767Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:07.072767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.07265","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":"2026-05-18T00:51:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jtm2c7rcm1NDeSbbF7thLWcL4Gihk1DtlWPo+LcL2AMUrvQKEBoq7c8QEaA1rmmtMy9YJPqydqT7bFLRfJ06AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:13:39.369762Z"},"content_sha256":"d9676c2890049d293c73235b3b909c0b6130ed5d23c8af90c49d64aa3bdf59a7","schema_version":"1.0","event_id":"sha256:d9676c2890049d293c73235b3b909c0b6130ed5d23c8af90c49d64aa3bdf59a7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:OGIC2ZJPBKSDLOB32LQYK2PWII","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thin film superfluid optomechanics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.optics","authors_text":"Christopher G. Baker, David L. McAuslan, Glen I. Harris, Warwick P. Bowen, Xin He, Yauhen Sachkou","submitted_at":"2016-09-23T08:25:19Z","abstract_excerpt":"Excitations in superfluid helium represent attractive mechanical degrees of freedom for cavity optomechanics schemes. Here we numerically and analytically investigate the properties of optomechanical resonators formed by thin films of superfluid $^4$He covering micrometer-scale whispering gallery mode cavities. We predict that through proper optimization of the interaction between film and optical field, large optomechanical coupling rates $g_0>2\\pi \\times 100$ kHz and single photon cooperativities $C_0>10$ are achievable. Our analytical model reveals the unconventional behaviour of these thin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.07265","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":"2026-05-18T00:51:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/GsIniuWM/+t2F6Y9guLll17yTpx+BRcjsvEuowHikeWxnRa+LPTSb25ZZg27GskcFYzIOtafe0y8Mo1kKWPAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:13:39.370113Z"},"content_sha256":"41602d90856475659234458e4a55d0c5dd8c6506b4916f99a4411c16d0f315c6","schema_version":"1.0","event_id":"sha256:41602d90856475659234458e4a55d0c5dd8c6506b4916f99a4411c16d0f315c6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OGIC2ZJPBKSDLOB32LQYK2PWII/bundle.json","state_url":"https://pith.science/pith/OGIC2ZJPBKSDLOB32LQYK2PWII/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OGIC2ZJPBKSDLOB32LQYK2PWII/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":"2026-05-31T03:13:39Z","links":{"resolver":"https://pith.science/pith/OGIC2ZJPBKSDLOB32LQYK2PWII","bundle":"https://pith.science/pith/OGIC2ZJPBKSDLOB32LQYK2PWII/bundle.json","state":"https://pith.science/pith/OGIC2ZJPBKSDLOB32LQYK2PWII/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OGIC2ZJPBKSDLOB32LQYK2PWII/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:OGIC2ZJPBKSDLOB32LQYK2PWII","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":"ceba0f9bbe3a93e27196c551b3f6820cce5bac0da24f9d78fcd6f347b5d7c6c0","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-23T08:25:19Z","title_canon_sha256":"b335a4100c12f7e2f7d39cb75f3ecb5816afb8cf86a9ad4b9c6f23d5875b467e"},"schema_version":"1.0","source":{"id":"1609.07265","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.07265","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"arxiv_version","alias_value":"1609.07265v1","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.07265","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"pith_short_12","alias_value":"OGIC2ZJPBKSD","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"OGIC2ZJPBKSDLOB3","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"OGIC2ZJP","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:41602d90856475659234458e4a55d0c5dd8c6506b4916f99a4411c16d0f315c6","target":"graph","created_at":"2026-05-18T00:51:07Z","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":"Excitations in superfluid helium represent attractive mechanical degrees of freedom for cavity optomechanics schemes. Here we numerically and analytically investigate the properties of optomechanical resonators formed by thin films of superfluid $^4$He covering micrometer-scale whispering gallery mode cavities. We predict that through proper optimization of the interaction between film and optical field, large optomechanical coupling rates $g_0>2\\pi \\times 100$ kHz and single photon cooperativities $C_0>10$ are achievable. Our analytical model reveals the unconventional behaviour of these thin","authors_text":"Christopher G. Baker, David L. McAuslan, Glen I. Harris, Warwick P. Bowen, Xin He, Yauhen Sachkou","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-23T08:25:19Z","title":"Thin film superfluid optomechanics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.07265","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:d9676c2890049d293c73235b3b909c0b6130ed5d23c8af90c49d64aa3bdf59a7","target":"record","created_at":"2026-05-18T00:51:07Z","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":"ceba0f9bbe3a93e27196c551b3f6820cce5bac0da24f9d78fcd6f347b5d7c6c0","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-09-23T08:25:19Z","title_canon_sha256":"b335a4100c12f7e2f7d39cb75f3ecb5816afb8cf86a9ad4b9c6f23d5875b467e"},"schema_version":"1.0","source":{"id":"1609.07265","kind":"arxiv","version":1}},"canonical_sha256":"71902d652f0aa435b83bd2e18569f6421ee54ea51851bed68ee4ab45b83f2e2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"71902d652f0aa435b83bd2e18569f6421ee54ea51851bed68ee4ab45b83f2e2c","first_computed_at":"2026-05-18T00:51:07.072767Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:07.072767Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+idJr6EGVa5XJBYH32wpSVg1Cw/Jr5sVci2akVWqhgjBgUk7h72qTAPumJDAFLdcWkry1rteDPk74ekfchYoDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:07.073297Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.07265","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9676c2890049d293c73235b3b909c0b6130ed5d23c8af90c49d64aa3bdf59a7","sha256:41602d90856475659234458e4a55d0c5dd8c6506b4916f99a4411c16d0f315c6"],"state_sha256":"a2ab880baf1c836c3f8b43d7c7e8ef3a906e89e889f1d39c310028852eb38a4e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zeAE+FlRTl2XDxAZ4rb2f0NFxR575qmunqqI2gqQsS7Ok0nqkyc6ACwP4ZTHXd7tA049vjz3sxfmEL9wIDHEDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:13:39.372424Z","bundle_sha256":"509d0d9c763ea21a292fa5cd0b326cdc8d3dfa7fe2b90a4a5553441590f1137d"}}