{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:XSQF67XT7NJWKR3POLNZBU6TD5","short_pith_number":"pith:XSQF67XT","canonical_record":{"source":{"id":"1307.4151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-16T02:37:05Z","cross_cats_sorted":[],"title_canon_sha256":"9b608ab0b8bb334d1936eca59809aac12a12cc3a78e78b18e7b004fb5a099307","abstract_canon_sha256":"78cc6c2420ff76ae847406051a80df45618718330413896fee20241430dae080"},"schema_version":"1.0"},"canonical_sha256":"bca05f7ef3fb5365476f72db90d3d31f61678c56d48e6b7358d2d62d6fbbb1d3","source":{"kind":"arxiv","id":"1307.4151","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4151","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4151v1","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4151","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"pith_short_12","alias_value":"XSQF67XT7NJW","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XSQF67XT7NJWKR3P","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XSQF67XT","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:XSQF67XT7NJWKR3POLNZBU6TD5","target":"record","payload":{"canonical_record":{"source":{"id":"1307.4151","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-16T02:37:05Z","cross_cats_sorted":[],"title_canon_sha256":"9b608ab0b8bb334d1936eca59809aac12a12cc3a78e78b18e7b004fb5a099307","abstract_canon_sha256":"78cc6c2420ff76ae847406051a80df45618718330413896fee20241430dae080"},"schema_version":"1.0"},"canonical_sha256":"bca05f7ef3fb5365476f72db90d3d31f61678c56d48e6b7358d2d62d6fbbb1d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:19.521742Z","signature_b64":"Iwsd/uUF72D+wpf0NKwD2xewfXA0EswAPGUbUB9dcj1bNRzjlWwA4RI5TEpVY8o949MlEqWzZO5MVWzMG+ikBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bca05f7ef3fb5365476f72db90d3d31f61678c56d48e6b7358d2d62d6fbbb1d3","last_reissued_at":"2026-05-18T03:18:19.521024Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:19.521024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.4151","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:18:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1YEty87E8sRhD7eiTDk1HRdquAP2l45F1ZJ3t5tq3A5/nDYja5aQYLnNNhOeeYX0bGfRLIYpKon8IZDsNmzjAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:45:50.647436Z"},"content_sha256":"65f417c412ff7dace452709021e1f297df6e557f2b91b5841d56d1a858d561f8","schema_version":"1.0","event_id":"sha256:65f417c412ff7dace452709021e1f297df6e557f2b91b5841d56d1a858d561f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:XSQF67XT7NJWKR3POLNZBU6TD5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large Enhancement of the Photoluminescence Emission of Photoexcited Undoped GaAs Quantum Wells Induced by an Intense Single-Cycle Terahertz Pulse","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"C. Kim, H. Akiyama, H. Hirori, K. Shinokita, K. Tanaka, K. W. West, L. N. Pfeiffer, T. Mochizuki","submitted_at":"2013-07-16T02:37:05Z","abstract_excerpt":"Intense terahetz (THz) pulses induce a photoluminescence (PL) flash from undoped high-quality GaAs/AlGaAs quantum wells under continuous wave laser excitation. The number of excitons increases 10000-fold from that of the steady state under only laser excitation. The THz electric field dependence and the relaxation dynamics of the PL flash intensity suggest that the strong electric field of the THz pulse ionizes impurity states during the one-picosecond period of the THz pulse and release carriers from a giant reservoir containing impurity states in the AlGaAs layers."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4151","kind":"arxiv","version":1},"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":"2026-05-18T03:18:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/gFQ3VzG6g6ing/yOoReCVeiuIJYv6b//tvb4tMrqe99CFEu7bQLe6Kzuf6YppTyCPY6fJ7YNYNYTzd600j4BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:45:50.648122Z"},"content_sha256":"4b14046dbc3271667fd0806a934ff3924cf77f40ba6e2d2a40df070af55cc43c","schema_version":"1.0","event_id":"sha256:4b14046dbc3271667fd0806a934ff3924cf77f40ba6e2d2a40df070af55cc43c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XSQF67XT7NJWKR3POLNZBU6TD5/bundle.json","state_url":"https://pith.science/pith/XSQF67XT7NJWKR3POLNZBU6TD5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XSQF67XT7NJWKR3POLNZBU6TD5/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":"2026-05-28T20:45:50Z","links":{"resolver":"https://pith.science/pith/XSQF67XT7NJWKR3POLNZBU6TD5","bundle":"https://pith.science/pith/XSQF67XT7NJWKR3POLNZBU6TD5/bundle.json","state":"https://pith.science/pith/XSQF67XT7NJWKR3POLNZBU6TD5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XSQF67XT7NJWKR3POLNZBU6TD5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:XSQF67XT7NJWKR3POLNZBU6TD5","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":"78cc6c2420ff76ae847406051a80df45618718330413896fee20241430dae080","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-16T02:37:05Z","title_canon_sha256":"9b608ab0b8bb334d1936eca59809aac12a12cc3a78e78b18e7b004fb5a099307"},"schema_version":"1.0","source":{"id":"1307.4151","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4151","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4151v1","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4151","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"pith_short_12","alias_value":"XSQF67XT7NJW","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XSQF67XT7NJWKR3P","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XSQF67XT","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:4b14046dbc3271667fd0806a934ff3924cf77f40ba6e2d2a40df070af55cc43c","target":"graph","created_at":"2026-05-18T03:18:19Z","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":"Intense terahetz (THz) pulses induce a photoluminescence (PL) flash from undoped high-quality GaAs/AlGaAs quantum wells under continuous wave laser excitation. The number of excitons increases 10000-fold from that of the steady state under only laser excitation. The THz electric field dependence and the relaxation dynamics of the PL flash intensity suggest that the strong electric field of the THz pulse ionizes impurity states during the one-picosecond period of the THz pulse and release carriers from a giant reservoir containing impurity states in the AlGaAs layers.","authors_text":"C. Kim, H. Akiyama, H. Hirori, K. Shinokita, K. Tanaka, K. W. West, L. N. Pfeiffer, T. Mochizuki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-16T02:37:05Z","title":"Large Enhancement of the Photoluminescence Emission of Photoexcited Undoped GaAs Quantum Wells Induced by an Intense Single-Cycle Terahertz Pulse"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4151","kind":"arxiv","version":1},"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":"sha256:65f417c412ff7dace452709021e1f297df6e557f2b91b5841d56d1a858d561f8","target":"record","created_at":"2026-05-18T03:18:19Z","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":"78cc6c2420ff76ae847406051a80df45618718330413896fee20241430dae080","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-07-16T02:37:05Z","title_canon_sha256":"9b608ab0b8bb334d1936eca59809aac12a12cc3a78e78b18e7b004fb5a099307"},"schema_version":"1.0","source":{"id":"1307.4151","kind":"arxiv","version":1}},"canonical_sha256":"bca05f7ef3fb5365476f72db90d3d31f61678c56d48e6b7358d2d62d6fbbb1d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bca05f7ef3fb5365476f72db90d3d31f61678c56d48e6b7358d2d62d6fbbb1d3","first_computed_at":"2026-05-18T03:18:19.521024Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:19.521024Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Iwsd/uUF72D+wpf0NKwD2xewfXA0EswAPGUbUB9dcj1bNRzjlWwA4RI5TEpVY8o949MlEqWzZO5MVWzMG+ikBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:19.521742Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.4151","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65f417c412ff7dace452709021e1f297df6e557f2b91b5841d56d1a858d561f8","sha256:4b14046dbc3271667fd0806a934ff3924cf77f40ba6e2d2a40df070af55cc43c"],"state_sha256":"22971ab1cbd136d21ca730013a750513f7901285075f929bf0abd665111ff29d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sfSNpZqSbwN8fJ5CXaD3Vj4d7xYTQgbz1L2qo08q3rwKRLZcxs0KP83XvhI8etyggxJoXXO2qc2RUKjM25ZgBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:45:50.651906Z","bundle_sha256":"fc7ad4492692c1534beb39bd0bbb929c09ab9132dccc581a3a9720b38148484d"}}