{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:24F2J6EBU4H3PL7GJHK2BNCMLB","short_pith_number":"pith:24F2J6EB","canonical_record":{"source":{"id":"2403.15155","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-22T12:10:23Z","cross_cats_sorted":["physics.app-ph","physics.ins-det","quant-ph"],"title_canon_sha256":"d6478cf92dda8871fe9daa70219116c7b0de08adcc30f75b4b70b34aaea06784","abstract_canon_sha256":"68776814f315cde352677b217dea7fa35127c94ea27670e9baad64c2082158f7"},"schema_version":"1.0"},"canonical_sha256":"d70ba4f881a70fb7afe649d5a0b44c58761c603f341823248f7f1f19a71966a6","source":{"kind":"arxiv","id":"2403.15155","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.15155","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"arxiv_version","alias_value":"2403.15155v2","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.15155","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"pith_short_12","alias_value":"24F2J6EBU4H3","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"pith_short_16","alias_value":"24F2J6EBU4H3PL7G","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"pith_short_8","alias_value":"24F2J6EB","created_at":"2026-07-05T08:54:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:24F2J6EBU4H3PL7GJHK2BNCMLB","target":"record","payload":{"canonical_record":{"source":{"id":"2403.15155","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-22T12:10:23Z","cross_cats_sorted":["physics.app-ph","physics.ins-det","quant-ph"],"title_canon_sha256":"d6478cf92dda8871fe9daa70219116c7b0de08adcc30f75b4b70b34aaea06784","abstract_canon_sha256":"68776814f315cde352677b217dea7fa35127c94ea27670e9baad64c2082158f7"},"schema_version":"1.0"},"canonical_sha256":"d70ba4f881a70fb7afe649d5a0b44c58761c603f341823248f7f1f19a71966a6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:54:08.939131Z","signature_b64":"WCNGE9eTzDkbZbUCOjP/SqgQ90htlVWW1ufbQC7kxdp+8xT4nQpl3VPLaQ0Hn/ym4CubNhwafooOcci632/iCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d70ba4f881a70fb7afe649d5a0b44c58761c603f341823248f7f1f19a71966a6","last_reissued_at":"2026-07-05T08:54:08.938621Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:54:08.938621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2403.15155","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":"2026-07-05T08:54:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"By9aWsMVQSYqv5lv9EykXVHl/Scn2aKTrYgb8jqNAQ0FchlLJctms53LwFa847ezPxHIl3vSj52qXE26iSyoBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T07:18:26.076806Z"},"content_sha256":"9d46bef892161f56512aee9063c9541b3cf8796cde67532b18dc9f3d90b89d83","schema_version":"1.0","event_id":"sha256:9d46bef892161f56512aee9063c9541b3cf8796cde67532b18dc9f3d90b89d83"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:24F2J6EBU4H3PL7GJHK2BNCMLB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Broad Instantaneous Bandwidth Microwave Spectrum Analyzer with a Microfabricated Atomic Vapor Cell","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph","physics.ins-det","quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"Jacques Haesler, Melvyn Ho, Philipp Treutlein, Sylvain Karlen, Thomas Ruster, Yongqi Shi","submitted_at":"2024-03-22T12:10:23Z","abstract_excerpt":"We report on broad instantaneous bandwidth microwave spectrum analysis with hot $^{87}\\mathrm{Rb}$ atoms in a microfabricated vapor cell in a large magnetic field gradient. The sensor is a MEMS atomic vapor cell filled with isotopically pure $^{87}\\mathrm{Rb}$ and $\\mathrm{N}_2$ buffer gas to localize the motion of the atoms. The microwave signals of interest are coupled through a coplanar waveguide to the cell, inducing spin flip transitions between optically pumped ground states of the atoms. A static magnetic field with large gradient maps the $\\textit{frequency spectrum}$ of the input micr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.15155","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2403.15155/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":"2026-07-05T08:54:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NXRgX7cHLR9t3A1vdaprygJojyz63/cs7Hda/6c1mELkasIJ4xNjOS7JdmAHnS7jzvpnWyLghxUG04yZMf+uAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T07:18:26.078112Z"},"content_sha256":"645cb15ed58f3d7f5fc24d23f4bc393816b447d371a52a65d9f46f1661fb30a5","schema_version":"1.0","event_id":"sha256:645cb15ed58f3d7f5fc24d23f4bc393816b447d371a52a65d9f46f1661fb30a5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/24F2J6EBU4H3PL7GJHK2BNCMLB/bundle.json","state_url":"https://pith.science/pith/24F2J6EBU4H3PL7GJHK2BNCMLB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/24F2J6EBU4H3PL7GJHK2BNCMLB/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":"2026-08-01T07:18:26Z","links":{"resolver":"https://pith.science/pith/24F2J6EBU4H3PL7GJHK2BNCMLB","bundle":"https://pith.science/pith/24F2J6EBU4H3PL7GJHK2BNCMLB/bundle.json","state":"https://pith.science/pith/24F2J6EBU4H3PL7GJHK2BNCMLB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/24F2J6EBU4H3PL7GJHK2BNCMLB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:24F2J6EBU4H3PL7GJHK2BNCMLB","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":"68776814f315cde352677b217dea7fa35127c94ea27670e9baad64c2082158f7","cross_cats_sorted":["physics.app-ph","physics.ins-det","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-22T12:10:23Z","title_canon_sha256":"d6478cf92dda8871fe9daa70219116c7b0de08adcc30f75b4b70b34aaea06784"},"schema_version":"1.0","source":{"id":"2403.15155","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2403.15155","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"arxiv_version","alias_value":"2403.15155v2","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2403.15155","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"pith_short_12","alias_value":"24F2J6EBU4H3","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"pith_short_16","alias_value":"24F2J6EBU4H3PL7G","created_at":"2026-07-05T08:54:08Z"},{"alias_kind":"pith_short_8","alias_value":"24F2J6EB","created_at":"2026-07-05T08:54:08Z"}],"graph_snapshots":[{"event_id":"sha256:645cb15ed58f3d7f5fc24d23f4bc393816b447d371a52a65d9f46f1661fb30a5","target":"graph","created_at":"2026-07-05T08:54:08Z","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/2403.15155/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report on broad instantaneous bandwidth microwave spectrum analysis with hot $^{87}\\mathrm{Rb}$ atoms in a microfabricated vapor cell in a large magnetic field gradient. The sensor is a MEMS atomic vapor cell filled with isotopically pure $^{87}\\mathrm{Rb}$ and $\\mathrm{N}_2$ buffer gas to localize the motion of the atoms. The microwave signals of interest are coupled through a coplanar waveguide to the cell, inducing spin flip transitions between optically pumped ground states of the atoms. A static magnetic field with large gradient maps the $\\textit{frequency spectrum}$ of the input micr","authors_text":"Jacques Haesler, Melvyn Ho, Philipp Treutlein, Sylvain Karlen, Thomas Ruster, Yongqi Shi","cross_cats":["physics.app-ph","physics.ins-det","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-22T12:10:23Z","title":"Broad Instantaneous Bandwidth Microwave Spectrum Analyzer with a Microfabricated Atomic Vapor Cell"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2403.15155","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":"sha256:9d46bef892161f56512aee9063c9541b3cf8796cde67532b18dc9f3d90b89d83","target":"record","created_at":"2026-07-05T08:54:08Z","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":"68776814f315cde352677b217dea7fa35127c94ea27670e9baad64c2082158f7","cross_cats_sorted":["physics.app-ph","physics.ins-det","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2024-03-22T12:10:23Z","title_canon_sha256":"d6478cf92dda8871fe9daa70219116c7b0de08adcc30f75b4b70b34aaea06784"},"schema_version":"1.0","source":{"id":"2403.15155","kind":"arxiv","version":2}},"canonical_sha256":"d70ba4f881a70fb7afe649d5a0b44c58761c603f341823248f7f1f19a71966a6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d70ba4f881a70fb7afe649d5a0b44c58761c603f341823248f7f1f19a71966a6","first_computed_at":"2026-07-05T08:54:08.938621Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:54:08.938621Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WCNGE9eTzDkbZbUCOjP/SqgQ90htlVWW1ufbQC7kxdp+8xT4nQpl3VPLaQ0Hn/ym4CubNhwafooOcci632/iCw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:54:08.939131Z","signed_message":"canonical_sha256_bytes"},"source_id":"2403.15155","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d46bef892161f56512aee9063c9541b3cf8796cde67532b18dc9f3d90b89d83","sha256:645cb15ed58f3d7f5fc24d23f4bc393816b447d371a52a65d9f46f1661fb30a5"],"state_sha256":"124bef616b56d716085a266275621bc30d6cd62471608fda8ccb0061d946e9cd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JWf2iyilZEb3EUYSUJMyEOAqen9UC/m+7joKWw2dYjMbcSCXBTCqPalorCf6tdydmaKtz/wXdMMTObtjq8wBCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T07:18:26.082532Z","bundle_sha256":"22e59078aae77ab45d80a2984f49812393828e842c6d9cb6194a938c277773dc"}}