{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:52UZXDQY3MYDGKKHZVSMTJYGEA","short_pith_number":"pith:52UZXDQY","canonical_record":{"source":{"id":"1110.6499","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-29T05:29:30Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"aec17195f569af1d8e732e80f18c1c259a43ca02b9b9267be4c2393db363d160","abstract_canon_sha256":"b85390a50e85b69f9a7b17d48222735d68949f2e22dab57790e5eadd7331f81f"},"schema_version":"1.0"},"canonical_sha256":"eea99b8e18db30332947cd64c9a706203dd7865fb770acf71ea85ed991493dcb","source":{"kind":"arxiv","id":"1110.6499","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.6499","created_at":"2026-05-18T03:46:31Z"},{"alias_kind":"arxiv_version","alias_value":"1110.6499v2","created_at":"2026-05-18T03:46:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.6499","created_at":"2026-05-18T03:46:31Z"},{"alias_kind":"pith_short_12","alias_value":"52UZXDQY3MYD","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"52UZXDQY3MYDGKKH","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"52UZXDQY","created_at":"2026-05-18T12:26:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:52UZXDQY3MYDGKKHZVSMTJYGEA","target":"record","payload":{"canonical_record":{"source":{"id":"1110.6499","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-29T05:29:30Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"aec17195f569af1d8e732e80f18c1c259a43ca02b9b9267be4c2393db363d160","abstract_canon_sha256":"b85390a50e85b69f9a7b17d48222735d68949f2e22dab57790e5eadd7331f81f"},"schema_version":"1.0"},"canonical_sha256":"eea99b8e18db30332947cd64c9a706203dd7865fb770acf71ea85ed991493dcb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:31.596144Z","signature_b64":"gml48Aet9gmhgCXGmCP/cmeRlwx5HerYNlCS/BnTgnf7aG1GgaAq5Q039iYY0APLiTm0Xj/EyBGu1Encvl98Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eea99b8e18db30332947cd64c9a706203dd7865fb770acf71ea85ed991493dcb","last_reissued_at":"2026-05-18T03:46:31.594930Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:31.594930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.6499","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":"2026-05-18T03:46:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Bs6GKA+wI56jjO1XHeC2noB/vNhDlLxohTGQo3ljRym3jv/eIgtID7j8553pFJN0UgMqnBevL8iWQuyFn++uCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:22:50.723397Z"},"content_sha256":"4c6e1dc5f5488cab80b5c74bce1df3a7c9870dc4514983bf62444e7cf2c1a8a1","schema_version":"1.0","event_id":"sha256:4c6e1dc5f5488cab80b5c74bce1df3a7c9870dc4514983bf62444e7cf2c1a8a1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:52UZXDQY3MYDGKKHZVSMTJYGEA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Narrowing of resonances in electromagnetically induced transparency and absorption using a Laguerre-Gaussian control beam","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"physics.optics","authors_text":"Sapam Ranjita Chanu, Vasant Natarajan","submitted_at":"2011-10-29T05:29:30Z","abstract_excerpt":"We study the phenomenon of electromagnetically induced transparency and absorption (EITA) using a control laser with a Laguerre-Gaussian (LG) profile instead of the usual Gaussian profile, and observe resonances with width up to 20 times below the natural linewidth. Aligning the probe beam to the central hole in the doughnut-shaped LG control beam allows simultaneously a strong control intensity required for high signal-to-noise ratio and a low intensity in the probe region required to get narrow resonances. Experiments with a second-order LG beam show that transit time and orbital angular mom"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.6499","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":"2026-05-18T03:46:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5dgli97picw3w//XuWScfxe7PbbW01C8wjYfJe7kc81wE77GhkurSadfY30lepWrK0TefOiBLdwluIaQ2o0HCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T08:22:50.723755Z"},"content_sha256":"1fc1f865ae452a884d092a4002aee92fbd7dfdc5c299d3fafd27e81f11af7bf0","schema_version":"1.0","event_id":"sha256:1fc1f865ae452a884d092a4002aee92fbd7dfdc5c299d3fafd27e81f11af7bf0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/52UZXDQY3MYDGKKHZVSMTJYGEA/bundle.json","state_url":"https://pith.science/pith/52UZXDQY3MYDGKKHZVSMTJYGEA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/52UZXDQY3MYDGKKHZVSMTJYGEA/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":"2026-06-03T08:22:50Z","links":{"resolver":"https://pith.science/pith/52UZXDQY3MYDGKKHZVSMTJYGEA","bundle":"https://pith.science/pith/52UZXDQY3MYDGKKHZVSMTJYGEA/bundle.json","state":"https://pith.science/pith/52UZXDQY3MYDGKKHZVSMTJYGEA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/52UZXDQY3MYDGKKHZVSMTJYGEA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:52UZXDQY3MYDGKKHZVSMTJYGEA","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":"b85390a50e85b69f9a7b17d48222735d68949f2e22dab57790e5eadd7331f81f","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-29T05:29:30Z","title_canon_sha256":"aec17195f569af1d8e732e80f18c1c259a43ca02b9b9267be4c2393db363d160"},"schema_version":"1.0","source":{"id":"1110.6499","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.6499","created_at":"2026-05-18T03:46:31Z"},{"alias_kind":"arxiv_version","alias_value":"1110.6499v2","created_at":"2026-05-18T03:46:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.6499","created_at":"2026-05-18T03:46:31Z"},{"alias_kind":"pith_short_12","alias_value":"52UZXDQY3MYD","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_16","alias_value":"52UZXDQY3MYDGKKH","created_at":"2026-05-18T12:26:20Z"},{"alias_kind":"pith_short_8","alias_value":"52UZXDQY","created_at":"2026-05-18T12:26:20Z"}],"graph_snapshots":[{"event_id":"sha256:1fc1f865ae452a884d092a4002aee92fbd7dfdc5c299d3fafd27e81f11af7bf0","target":"graph","created_at":"2026-05-18T03:46:31Z","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 study the phenomenon of electromagnetically induced transparency and absorption (EITA) using a control laser with a Laguerre-Gaussian (LG) profile instead of the usual Gaussian profile, and observe resonances with width up to 20 times below the natural linewidth. Aligning the probe beam to the central hole in the doughnut-shaped LG control beam allows simultaneously a strong control intensity required for high signal-to-noise ratio and a low intensity in the probe region required to get narrow resonances. Experiments with a second-order LG beam show that transit time and orbital angular mom","authors_text":"Sapam Ranjita Chanu, Vasant Natarajan","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-29T05:29:30Z","title":"Narrowing of resonances in electromagnetically induced transparency and absorption using a Laguerre-Gaussian control beam"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.6499","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":"sha256:4c6e1dc5f5488cab80b5c74bce1df3a7c9870dc4514983bf62444e7cf2c1a8a1","target":"record","created_at":"2026-05-18T03:46:31Z","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":"b85390a50e85b69f9a7b17d48222735d68949f2e22dab57790e5eadd7331f81f","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2011-10-29T05:29:30Z","title_canon_sha256":"aec17195f569af1d8e732e80f18c1c259a43ca02b9b9267be4c2393db363d160"},"schema_version":"1.0","source":{"id":"1110.6499","kind":"arxiv","version":2}},"canonical_sha256":"eea99b8e18db30332947cd64c9a706203dd7865fb770acf71ea85ed991493dcb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eea99b8e18db30332947cd64c9a706203dd7865fb770acf71ea85ed991493dcb","first_computed_at":"2026-05-18T03:46:31.594930Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:31.594930Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gml48Aet9gmhgCXGmCP/cmeRlwx5HerYNlCS/BnTgnf7aG1GgaAq5Q039iYY0APLiTm0Xj/EyBGu1Encvl98Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:31.596144Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.6499","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4c6e1dc5f5488cab80b5c74bce1df3a7c9870dc4514983bf62444e7cf2c1a8a1","sha256:1fc1f865ae452a884d092a4002aee92fbd7dfdc5c299d3fafd27e81f11af7bf0"],"state_sha256":"03f37a7758a7561728fd91fbf8cee221936bab4a3a0ea87a480be7ef85435d83"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JxqgJImruy7rbo37HEkA4TjCGkYgl1ZXVyS6gk2ap14CukL6BfBshU9h2tab5LFfIyvTA5v7wOEyAYmDFBCQAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T08:22:50.725820Z","bundle_sha256":"7fef14dfeac1dab3b7669c818f300622e82bde8b3579ff0f2fb8bcde77fceea7"}}