{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:U7XFMXAYDJCEFFSLC2NT4OAU5K","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":"b10debe49fa4008e5269c008bb3b2c6917ea0c431f7a53021bff0033e61a1500","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-03-15T16:50:06Z","title_canon_sha256":"8edc540098616086602421b6a0f7d1e15708fb51050846e0562488c7fca90b57"},"schema_version":"1.0","source":{"id":"1103.2956","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.2956","created_at":"2026-05-18T04:05:38Z"},{"alias_kind":"arxiv_version","alias_value":"1103.2956v2","created_at":"2026-05-18T04:05:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.2956","created_at":"2026-05-18T04:05:38Z"},{"alias_kind":"pith_short_12","alias_value":"U7XFMXAYDJCE","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"U7XFMXAYDJCEFFSL","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"U7XFMXAY","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:efb466f29ef152187a9583967b933a609621c8c9c8c00f3fd28ca3d68b8cac49","target":"graph","created_at":"2026-05-18T04:05:38Z","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 discuss an opportunity to achieve amplification without inversion in three-level cascade scheme using an effective unidirectional pumping via bidirectional incoherent pump. Analytical solution to the population and the coherence are obtained in the steady-state regime. With a proper choice of the parameters, obtained here, the possibility for amplification without inversion is presented.","authors_text":"Pankaj K. Jha","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-03-15T16:50:06Z","title":"Effective unidirectional pumping for steady-state amplification without inversion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.2956","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:e1963ac2d2138b053c3b4227f97c6640d0a49b0587e14c0a76abc168da0a6689","target":"record","created_at":"2026-05-18T04:05:38Z","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":"b10debe49fa4008e5269c008bb3b2c6917ea0c431f7a53021bff0033e61a1500","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2011-03-15T16:50:06Z","title_canon_sha256":"8edc540098616086602421b6a0f7d1e15708fb51050846e0562488c7fca90b57"},"schema_version":"1.0","source":{"id":"1103.2956","kind":"arxiv","version":2}},"canonical_sha256":"a7ee565c181a4442964b169b3e3814ea9523d7d7382f75870eac9efe1551794c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7ee565c181a4442964b169b3e3814ea9523d7d7382f75870eac9efe1551794c","first_computed_at":"2026-05-18T04:05:38.813003Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:38.813003Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GQJunieEmXfW6aX0nJQVQbbZebEb0//OlJCQdmOLk5ImqeKuhFDECBSPUc2+rwwDZQRD3wLd+03isjnQotSkBA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:38.813455Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.2956","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1963ac2d2138b053c3b4227f97c6640d0a49b0587e14c0a76abc168da0a6689","sha256:efb466f29ef152187a9583967b933a609621c8c9c8c00f3fd28ca3d68b8cac49"],"state_sha256":"abda206f055818992a264f981963e2ab22d770819d861f60eb3e8e2f7aa7c0e7"}