{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:NRYOCGRFCLB24ICLYQ4L2TXQAG","short_pith_number":"pith:NRYOCGRF","schema_version":"1.0","canonical_sha256":"6c70e11a2512c3ae204bc438bd4ef001a2c417118d62498eb5c0df9425fd72ed","source":{"kind":"arxiv","id":"1602.07791","version":3},"attestation_state":"computed","paper":{"title":"Stimulated Raman Adiabatic Passage for Improved Performance of a Cold Atom Electron and Ion Source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"A. J. McCulloch, B. M. Sparkes, D. Murphy, R. E. Scholten, R. J. Taylor, R. W. Speirs","submitted_at":"2016-02-25T04:38:00Z","abstract_excerpt":"We implement high-efficiency coherent excitation to a Rydberg state using stimulated Raman adiabatic passage in a cold atom electron and ion source. We achieve an efficiency of 60% averaged over the laser excitation volume with a peak efficiency of 82%, a 1.6 times improvement relative to incoherent pulsed-laser excitation. Using pulsed electric field ionization of the Rydberg atoms we create electron bunches with durations of 250 ps. High-efficiency excitation will increase source brightness, crucial for ultrafast electron diffraction experiments, and coherent excitation to high-lying Rydberg"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1602.07791","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2016-02-25T04:38:00Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"66b4c93c63b29be9fc90f4b31501e74d5d06bd5a5473a410ca68a08505fe4109","abstract_canon_sha256":"1618b9db9e63fa025112064818631fdae9ba755088cd5b9950d3bc084dff18e9"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:08:42.589886Z","signature_b64":"bcuhsPLaVmFVCUfFLcuVvwjNcf2+hpwpcF9KohKF0OeABKRKjVPb5U22726mP47N+34mIjrUbJK3e4WoBgyjCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c70e11a2512c3ae204bc438bd4ef001a2c417118d62498eb5c0df9425fd72ed","last_reissued_at":"2026-05-18T01:08:42.589304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:08:42.589304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Stimulated Raman Adiabatic Passage for Improved Performance of a Cold Atom Electron and Ion Source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.atom-ph","authors_text":"A. J. McCulloch, B. M. Sparkes, D. Murphy, R. E. Scholten, R. J. Taylor, R. W. Speirs","submitted_at":"2016-02-25T04:38:00Z","abstract_excerpt":"We implement high-efficiency coherent excitation to a Rydberg state using stimulated Raman adiabatic passage in a cold atom electron and ion source. We achieve an efficiency of 60% averaged over the laser excitation volume with a peak efficiency of 82%, a 1.6 times improvement relative to incoherent pulsed-laser excitation. Using pulsed electric field ionization of the Rydberg atoms we create electron bunches with durations of 250 ps. High-efficiency excitation will increase source brightness, crucial for ultrafast electron diffraction experiments, and coherent excitation to high-lying Rydberg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.07791","kind":"arxiv","version":3},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1602.07791","created_at":"2026-05-18T01:08:42.589410+00:00"},{"alias_kind":"arxiv_version","alias_value":"1602.07791v3","created_at":"2026-05-18T01:08:42.589410+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.07791","created_at":"2026-05-18T01:08:42.589410+00:00"},{"alias_kind":"pith_short_12","alias_value":"NRYOCGRFCLB2","created_at":"2026-05-18T12:30:36.002864+00:00"},{"alias_kind":"pith_short_16","alias_value":"NRYOCGRFCLB24ICL","created_at":"2026-05-18T12:30:36.002864+00:00"},{"alias_kind":"pith_short_8","alias_value":"NRYOCGRF","created_at":"2026-05-18T12:30:36.002864+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG","json":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG.json","graph_json":"https://pith.science/api/pith-number/NRYOCGRFCLB24ICLYQ4L2TXQAG/graph.json","events_json":"https://pith.science/api/pith-number/NRYOCGRFCLB24ICLYQ4L2TXQAG/events.json","paper":"https://pith.science/paper/NRYOCGRF"},"agent_actions":{"view_html":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG","download_json":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG.json","view_paper":"https://pith.science/paper/NRYOCGRF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1602.07791&json=true","fetch_graph":"https://pith.science/api/pith-number/NRYOCGRFCLB24ICLYQ4L2TXQAG/graph.json","fetch_events":"https://pith.science/api/pith-number/NRYOCGRFCLB24ICLYQ4L2TXQAG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG/action/storage_attestation","attest_author":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG/action/author_attestation","sign_citation":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG/action/citation_signature","submit_replication":"https://pith.science/pith/NRYOCGRFCLB24ICLYQ4L2TXQAG/action/replication_record"}},"created_at":"2026-05-18T01:08:42.589410+00:00","updated_at":"2026-05-18T01:08:42.589410+00:00"}