{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:S7B3BBXZHXH7VIJEFC453B2IDD","short_pith_number":"pith:S7B3BBXZ","canonical_record":{"source":{"id":"1406.4010","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-06-16T13:42:50Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"d9136d3de9960dec02820acd9c02c4c09a06b79f74a87d005ed18ddad6dd4de5","abstract_canon_sha256":"398184160c7a42a2dcdc3228c0b57f3f295c895e3a19e133b9f4e219340c36cf"},"schema_version":"1.0"},"canonical_sha256":"97c3b086f93dcffaa12428b9dd874818e87ce36266f4599e3e7da9dcfafb7344","source":{"kind":"arxiv","id":"1406.4010","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.4010","created_at":"2026-05-18T02:20:36Z"},{"alias_kind":"arxiv_version","alias_value":"1406.4010v2","created_at":"2026-05-18T02:20:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.4010","created_at":"2026-05-18T02:20:36Z"},{"alias_kind":"pith_short_12","alias_value":"S7B3BBXZHXH7","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"S7B3BBXZHXH7VIJE","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"S7B3BBXZ","created_at":"2026-05-18T12:28:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:S7B3BBXZHXH7VIJEFC453B2IDD","target":"record","payload":{"canonical_record":{"source":{"id":"1406.4010","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-06-16T13:42:50Z","cross_cats_sorted":["cond-mat.supr-con"],"title_canon_sha256":"d9136d3de9960dec02820acd9c02c4c09a06b79f74a87d005ed18ddad6dd4de5","abstract_canon_sha256":"398184160c7a42a2dcdc3228c0b57f3f295c895e3a19e133b9f4e219340c36cf"},"schema_version":"1.0"},"canonical_sha256":"97c3b086f93dcffaa12428b9dd874818e87ce36266f4599e3e7da9dcfafb7344","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:20:36.772706Z","signature_b64":"H/v7JA3dUR2HZSKVPJhCU3Gy6ZjreJGht+h1iwXBimznsY57mbAXcSZtToIPCq9MNlxJhIZ0xn53gu4dJZs/BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"97c3b086f93dcffaa12428b9dd874818e87ce36266f4599e3e7da9dcfafb7344","last_reissued_at":"2026-05-18T02:20:36.771975Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:20:36.771975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.4010","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":"2026-05-18T02:20:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K5juXHn6Ry0V1JYyu5vB8MEcVuKtqDRh+Mp+Lj9ATS7rVcjPD2T87mbZT4fTHINUgTELiumKMiBAVMqku6naCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T19:50:08.561159Z"},"content_sha256":"c6343271139c9cf06dcaf004674a8514b9936fda3175d73d839acb5951b17f78","schema_version":"1.0","event_id":"sha256:c6343271139c9cf06dcaf004674a8514b9936fda3175d73d839acb5951b17f78"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:S7B3BBXZHXH7VIJEFC453B2IDD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.supr-con"],"primary_cat":"astro-ph.IM","authors_text":"Bradley Dober, Chris Groppi, Dale Li, Dan Becker, Dave P. Pappas, Gene C. Hilton, Hsaio-Mei Cho, Jeff Van Lanen, Jiansong Gao, Jim Beall, Johannes Hubmayr, Kent D. Irwin, Lian-Fu Wei, Mark Devlin, Michael R. Vissers, Phillip Mauskopf, Yiwen Wang","submitted_at":"2014-06-16T13:42:50Z","abstract_excerpt":"We demonstrate photon-noise limited performance at sub-millimeter wavelengths in feedhorn-coupled, microwave kinetic inductance detectors (MKIDs) made of a TiN/Ti/TiN trilayer superconducting film, tuned to have a transition temperature of 1.4~K. Micro-machining of the silicon-on-insulator wafer backside creates a quarter-wavelength backshort optimized for efficient coupling at 250~\\micron. Using frequency read out and when viewing a variable temperature blackbody source, we measure device noise consistent with photon noise when the incident optical power is $>$~0.5~pW, corresponding to noise "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.4010","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":"2026-05-18T02:20:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"83hb+9o5lANYca8KRIMfjYrL39yBxm40h5t+6El9YVT+a+7Zxq0lhV19TFUsMQ8A0aiVNLsBElx7//IEH/dMBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T19:50:08.561978Z"},"content_sha256":"2dca10c629bccf044955f0c4dea2cb921804fee1b2be0a538fb985e0fccab81b","schema_version":"1.0","event_id":"sha256:2dca10c629bccf044955f0c4dea2cb921804fee1b2be0a538fb985e0fccab81b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S7B3BBXZHXH7VIJEFC453B2IDD/bundle.json","state_url":"https://pith.science/pith/S7B3BBXZHXH7VIJEFC453B2IDD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S7B3BBXZHXH7VIJEFC453B2IDD/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":"2026-05-31T19:50:08Z","links":{"resolver":"https://pith.science/pith/S7B3BBXZHXH7VIJEFC453B2IDD","bundle":"https://pith.science/pith/S7B3BBXZHXH7VIJEFC453B2IDD/bundle.json","state":"https://pith.science/pith/S7B3BBXZHXH7VIJEFC453B2IDD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S7B3BBXZHXH7VIJEFC453B2IDD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:S7B3BBXZHXH7VIJEFC453B2IDD","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":"398184160c7a42a2dcdc3228c0b57f3f295c895e3a19e133b9f4e219340c36cf","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-06-16T13:42:50Z","title_canon_sha256":"d9136d3de9960dec02820acd9c02c4c09a06b79f74a87d005ed18ddad6dd4de5"},"schema_version":"1.0","source":{"id":"1406.4010","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.4010","created_at":"2026-05-18T02:20:36Z"},{"alias_kind":"arxiv_version","alias_value":"1406.4010v2","created_at":"2026-05-18T02:20:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.4010","created_at":"2026-05-18T02:20:36Z"},{"alias_kind":"pith_short_12","alias_value":"S7B3BBXZHXH7","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_16","alias_value":"S7B3BBXZHXH7VIJE","created_at":"2026-05-18T12:28:49Z"},{"alias_kind":"pith_short_8","alias_value":"S7B3BBXZ","created_at":"2026-05-18T12:28:49Z"}],"graph_snapshots":[{"event_id":"sha256:2dca10c629bccf044955f0c4dea2cb921804fee1b2be0a538fb985e0fccab81b","target":"graph","created_at":"2026-05-18T02:20:36Z","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":"We demonstrate photon-noise limited performance at sub-millimeter wavelengths in feedhorn-coupled, microwave kinetic inductance detectors (MKIDs) made of a TiN/Ti/TiN trilayer superconducting film, tuned to have a transition temperature of 1.4~K. Micro-machining of the silicon-on-insulator wafer backside creates a quarter-wavelength backshort optimized for efficient coupling at 250~\\micron. Using frequency read out and when viewing a variable temperature blackbody source, we measure device noise consistent with photon noise when the incident optical power is $>$~0.5~pW, corresponding to noise ","authors_text":"Bradley Dober, Chris Groppi, Dale Li, Dan Becker, Dave P. Pappas, Gene C. Hilton, Hsaio-Mei Cho, Jeff Van Lanen, Jiansong Gao, Jim Beall, Johannes Hubmayr, Kent D. Irwin, Lian-Fu Wei, Mark Devlin, Michael R. Vissers, Phillip Mauskopf, Yiwen Wang","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-06-16T13:42:50Z","title":"Photon-noise limited sensitivity in titanium nitride kinetic inductance detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.4010","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:c6343271139c9cf06dcaf004674a8514b9936fda3175d73d839acb5951b17f78","target":"record","created_at":"2026-05-18T02:20:36Z","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":"398184160c7a42a2dcdc3228c0b57f3f295c895e3a19e133b9f4e219340c36cf","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2014-06-16T13:42:50Z","title_canon_sha256":"d9136d3de9960dec02820acd9c02c4c09a06b79f74a87d005ed18ddad6dd4de5"},"schema_version":"1.0","source":{"id":"1406.4010","kind":"arxiv","version":2}},"canonical_sha256":"97c3b086f93dcffaa12428b9dd874818e87ce36266f4599e3e7da9dcfafb7344","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"97c3b086f93dcffaa12428b9dd874818e87ce36266f4599e3e7da9dcfafb7344","first_computed_at":"2026-05-18T02:20:36.771975Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:20:36.771975Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H/v7JA3dUR2HZSKVPJhCU3Gy6ZjreJGht+h1iwXBimznsY57mbAXcSZtToIPCq9MNlxJhIZ0xn53gu4dJZs/BA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:20:36.772706Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.4010","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c6343271139c9cf06dcaf004674a8514b9936fda3175d73d839acb5951b17f78","sha256:2dca10c629bccf044955f0c4dea2cb921804fee1b2be0a538fb985e0fccab81b"],"state_sha256":"ab4b221772d93534a7e5b95dfd3d660c01f968717d3d89bf31f155d19dff117e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FmRSsCIKCg3A9hJnQFYNrLWsx6JZ44MRKQsvR+5HxCkllrHVjQwqJS+odRIcy/CmDeBINdZpN3zrl1uZQNLtBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T19:50:08.566670Z","bundle_sha256":"e729ea0b672a7943637af11278a2ecfd852200e9beeaf8035bf51dff29bf59f0"}}