{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:IDLUL7YIPDXTNXWABJFLTDKQ3K","short_pith_number":"pith:IDLUL7YI","canonical_record":{"source":{"id":"1202.4556","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-02-21T08:42:10Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"ce67f108880512d7fc8ddfc5debfdd1f087193760542f1d7e19ba0b4a818fc5f","abstract_canon_sha256":"cc6fe08ad1cec7296aeacfd332657e1132b1e4375980681ec9748ebb7f3e4925"},"schema_version":"1.0"},"canonical_sha256":"40d745ff0878ef36dec00a4ab98d50da9d6ef86e05a3b7a26185228010d056c7","source":{"kind":"arxiv","id":"1202.4556","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4556","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4556v2","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4556","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"IDLUL7YIPDXT","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IDLUL7YIPDXTNXWA","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IDLUL7YI","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:IDLUL7YIPDXTNXWABJFLTDKQ3K","target":"record","payload":{"canonical_record":{"source":{"id":"1202.4556","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-02-21T08:42:10Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"ce67f108880512d7fc8ddfc5debfdd1f087193760542f1d7e19ba0b4a818fc5f","abstract_canon_sha256":"cc6fe08ad1cec7296aeacfd332657e1132b1e4375980681ec9748ebb7f3e4925"},"schema_version":"1.0"},"canonical_sha256":"40d745ff0878ef36dec00a4ab98d50da9d6ef86e05a3b7a26185228010d056c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:23.047148Z","signature_b64":"I4QO7nu8DVxNNVUw8qW3v+ZZI4wyG/W9Jw1XGypjxQItXSu83qJuu+gzsHYRLBICMKdho2KPrClMLnhtKZQQCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40d745ff0878ef36dec00a4ab98d50da9d6ef86e05a3b7a26185228010d056c7","last_reissued_at":"2026-05-18T01:58:23.046681Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:23.046681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.4556","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:58:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b/q6D4Sb4GFoHPcmsxLNwOOY/TplFAL4QFvpegWS9RGlEguFv9E+8yUS99Ys4tMi6shGnCK7V+SL2YffvvfNAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:46:35.589536Z"},"content_sha256":"43bbe555c485651659e9b9149b4c09fa0161a264b4e927cdad967afc2005184f","schema_version":"1.0","event_id":"sha256:43bbe555c485651659e9b9149b4c09fa0161a264b4e927cdad967afc2005184f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:IDLUL7YIPDXTNXWABJFLTDKQ3K","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extremely Low-Loss Acoustic Phonons in a Quartz Bulk Acoustic Wave Resonator at Millikelvin Temperature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.ins-det","authors_text":"Daniel L. Creedon, Eugene N. Ivanov, Maxim Goryachev, Michael E. Tobar, Roger Bourquin, Serge Galliou","submitted_at":"2012-02-21T08:42:10Z","abstract_excerpt":"Low-loss, high frequency acoustic resonators cooled to millikelvin temperatures are a topic of great interest for application to hybrid quantum systems. When cooled to 20 mK, we show that resonant acoustic phonon modes in a Bulk Acoustic Wave (BAW) quartz resonator demonstrate exceptionally low loss (with $Q$-factors of order billions) at frequencies of 15.6 and 65.4 MHz, with a maximum $f.Q$ product of 7.8$\\times10^{16}$ Hz. Given this result, we show that the $Q$-factor in such devices near the quantum ground state can be four orders of magnitude better than previously attained. Such resonat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4556","kind":"arxiv","version":2},"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":"2026-05-18T01:58:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0YGw1RZ3F5tPikPYh2S8FaZ3SiyPyPNcql2CsDn+1aD9o9t/r96Z5MoDUlMrfpf+L6Shee1JMn3nWmQTacm3Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T13:46:35.590200Z"},"content_sha256":"f1372fdadcbc640f668b6ebc1ead9940c938ae4f78d4405e71445ca11a40402c","schema_version":"1.0","event_id":"sha256:f1372fdadcbc640f668b6ebc1ead9940c938ae4f78d4405e71445ca11a40402c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K/bundle.json","state_url":"https://pith.science/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K/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":"2026-05-26T13:46:35Z","links":{"resolver":"https://pith.science/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K","bundle":"https://pith.science/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K/bundle.json","state":"https://pith.science/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IDLUL7YIPDXTNXWABJFLTDKQ3K/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:IDLUL7YIPDXTNXWABJFLTDKQ3K","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":"cc6fe08ad1cec7296aeacfd332657e1132b1e4375980681ec9748ebb7f3e4925","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-02-21T08:42:10Z","title_canon_sha256":"ce67f108880512d7fc8ddfc5debfdd1f087193760542f1d7e19ba0b4a818fc5f"},"schema_version":"1.0","source":{"id":"1202.4556","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.4556","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"1202.4556v2","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.4556","created_at":"2026-05-18T01:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"IDLUL7YIPDXT","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"IDLUL7YIPDXTNXWA","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"IDLUL7YI","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:f1372fdadcbc640f668b6ebc1ead9940c938ae4f78d4405e71445ca11a40402c","target":"graph","created_at":"2026-05-18T01:58:23Z","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":"Low-loss, high frequency acoustic resonators cooled to millikelvin temperatures are a topic of great interest for application to hybrid quantum systems. When cooled to 20 mK, we show that resonant acoustic phonon modes in a Bulk Acoustic Wave (BAW) quartz resonator demonstrate exceptionally low loss (with $Q$-factors of order billions) at frequencies of 15.6 and 65.4 MHz, with a maximum $f.Q$ product of 7.8$\\times10^{16}$ Hz. Given this result, we show that the $Q$-factor in such devices near the quantum ground state can be four orders of magnitude better than previously attained. Such resonat","authors_text":"Daniel L. Creedon, Eugene N. Ivanov, Maxim Goryachev, Michael E. Tobar, Roger Bourquin, Serge Galliou","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-02-21T08:42:10Z","title":"Extremely Low-Loss Acoustic Phonons in a Quartz Bulk Acoustic Wave Resonator at Millikelvin Temperature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.4556","kind":"arxiv","version":2},"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":"sha256:43bbe555c485651659e9b9149b4c09fa0161a264b4e927cdad967afc2005184f","target":"record","created_at":"2026-05-18T01:58:23Z","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":"cc6fe08ad1cec7296aeacfd332657e1132b1e4375980681ec9748ebb7f3e4925","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2012-02-21T08:42:10Z","title_canon_sha256":"ce67f108880512d7fc8ddfc5debfdd1f087193760542f1d7e19ba0b4a818fc5f"},"schema_version":"1.0","source":{"id":"1202.4556","kind":"arxiv","version":2}},"canonical_sha256":"40d745ff0878ef36dec00a4ab98d50da9d6ef86e05a3b7a26185228010d056c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"40d745ff0878ef36dec00a4ab98d50da9d6ef86e05a3b7a26185228010d056c7","first_computed_at":"2026-05-18T01:58:23.046681Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:58:23.046681Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I4QO7nu8DVxNNVUw8qW3v+ZZI4wyG/W9Jw1XGypjxQItXSu83qJuu+gzsHYRLBICMKdho2KPrClMLnhtKZQQCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:58:23.047148Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.4556","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43bbe555c485651659e9b9149b4c09fa0161a264b4e927cdad967afc2005184f","sha256:f1372fdadcbc640f668b6ebc1ead9940c938ae4f78d4405e71445ca11a40402c"],"state_sha256":"ee86324cae3210c029f2d2796ac2d2957e6dd668ee4bba28162e7aa44105f5cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WieXRCyTRVGapav9M8VMMttquEUSuWSjS2xuK0qrPhH61xsRIfSv7ZByXCULyBgvBV4NwetMX20zSQxOJWH8AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T13:46:35.593626Z","bundle_sha256":"b5c1a6d77a5e8cd934d988316220cc1dec36ae6acc079426d4b77e175f6e58b6"}}