{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:AOUY7Y33LORYVKYJEORBORY6X3","short_pith_number":"pith:AOUY7Y33","canonical_record":{"source":{"id":"0810.0412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-10-02T13:44:46Z","cross_cats_sorted":[],"title_canon_sha256":"f5f8d7a085bd13644e099020895a21919865efd8a4d3e57d02019bee0dd7a12d","abstract_canon_sha256":"67b12f0f4457322066368f4bda88acd63ae99a4ac229a87dd524f487465f8ffc"},"schema_version":"1.0"},"canonical_sha256":"03a98fe37b5ba38aab0923a217471ebed655556c5719d35265c6db7b26c54743","source":{"kind":"arxiv","id":"0810.0412","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.0412","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"arxiv_version","alias_value":"0810.0412v1","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.0412","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"pith_short_12","alias_value":"AOUY7Y33LORY","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"pith_short_16","alias_value":"AOUY7Y33LORYVKYJ","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"pith_short_8","alias_value":"AOUY7Y33","created_at":"2026-07-04T17:13:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:AOUY7Y33LORYVKYJEORBORY6X3","target":"record","payload":{"canonical_record":{"source":{"id":"0810.0412","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-10-02T13:44:46Z","cross_cats_sorted":[],"title_canon_sha256":"f5f8d7a085bd13644e099020895a21919865efd8a4d3e57d02019bee0dd7a12d","abstract_canon_sha256":"67b12f0f4457322066368f4bda88acd63ae99a4ac229a87dd524f487465f8ffc"},"schema_version":"1.0"},"canonical_sha256":"03a98fe37b5ba38aab0923a217471ebed655556c5719d35265c6db7b26c54743","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:13:03.176396Z","signature_b64":"TkZNhy7kGblXCbdDz9c9B8cuNorxrH2urSMtMiXJ216BLWoY3yknTBB8R3MuPXHkAKsMgt/BouBBX1z4B1/ABA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"03a98fe37b5ba38aab0923a217471ebed655556c5719d35265c6db7b26c54743","last_reissued_at":"2026-07-04T17:13:03.176004Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:13:03.176004Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0810.0412","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":"2026-07-04T17:13:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9sSLwx8nDvjEm7Dkb7ieHIdnJrCBQmDnUN7vjAXwnAdOST637bVHtdyJFQCJwpQlphJrZbuAZlJNI5dHp/XGDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:42:24.991941Z"},"content_sha256":"e1c2a0d5c13d8527f3f6362632e45216562e57f8452586b9536597eca3d71cd4","schema_version":"1.0","event_id":"sha256:e1c2a0d5c13d8527f3f6362632e45216562e57f8452586b9536597eca3d71cd4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:AOUY7Y33LORYVKYJEORBORY6X3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sequential multi-photon strategy for semiconductor-based terahertz detectors","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"F. Castellano, F. Rossi, R. C. Iotti","submitted_at":"2008-10-02T13:44:46Z","abstract_excerpt":"A semiconductor-based terahertz-detector strategy, exploiting a bound-to-bound-to-continuum architecture, is presented and investigated. In particular, a ladder of equidistant energy levels is employed, whose step is tuned to the desired detection frequency and allows for sequential multi-photon absorption. Our theoretical analysis demonstrates that the proposed multi-subband scheme could represent a promising alternative to conventional quantum-well infrared photodetectors in the terahertz spectral region."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.0412","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0810.0412/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":"2026-07-04T17:13:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CjaBvipRA4VpP3il9K15psGSumSbT6pVkV9IzKWvJdWMBuVUuJ2UokcIS1VpCILuZRpoccl3nIl5ZSQSxxTkCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-22T01:42:24.992289Z"},"content_sha256":"877fb7b70b5c73955f25758b52a979368725ebe30e7ef4483643f60108ae51da","schema_version":"1.0","event_id":"sha256:877fb7b70b5c73955f25758b52a979368725ebe30e7ef4483643f60108ae51da"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AOUY7Y33LORYVKYJEORBORY6X3/bundle.json","state_url":"https://pith.science/pith/AOUY7Y33LORYVKYJEORBORY6X3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AOUY7Y33LORYVKYJEORBORY6X3/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":"2026-07-22T01:42:24Z","links":{"resolver":"https://pith.science/pith/AOUY7Y33LORYVKYJEORBORY6X3","bundle":"https://pith.science/pith/AOUY7Y33LORYVKYJEORBORY6X3/bundle.json","state":"https://pith.science/pith/AOUY7Y33LORYVKYJEORBORY6X3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AOUY7Y33LORYVKYJEORBORY6X3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:AOUY7Y33LORYVKYJEORBORY6X3","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":"67b12f0f4457322066368f4bda88acd63ae99a4ac229a87dd524f487465f8ffc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-10-02T13:44:46Z","title_canon_sha256":"f5f8d7a085bd13644e099020895a21919865efd8a4d3e57d02019bee0dd7a12d"},"schema_version":"1.0","source":{"id":"0810.0412","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0810.0412","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"arxiv_version","alias_value":"0810.0412v1","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0810.0412","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"pith_short_12","alias_value":"AOUY7Y33LORY","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"pith_short_16","alias_value":"AOUY7Y33LORYVKYJ","created_at":"2026-07-04T17:13:03Z"},{"alias_kind":"pith_short_8","alias_value":"AOUY7Y33","created_at":"2026-07-04T17:13:03Z"}],"graph_snapshots":[{"event_id":"sha256:877fb7b70b5c73955f25758b52a979368725ebe30e7ef4483643f60108ae51da","target":"graph","created_at":"2026-07-04T17:13:03Z","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/0810.0412/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A semiconductor-based terahertz-detector strategy, exploiting a bound-to-bound-to-continuum architecture, is presented and investigated. In particular, a ladder of equidistant energy levels is employed, whose step is tuned to the desired detection frequency and allows for sequential multi-photon absorption. Our theoretical analysis demonstrates that the proposed multi-subband scheme could represent a promising alternative to conventional quantum-well infrared photodetectors in the terahertz spectral region.","authors_text":"F. Castellano, F. Rossi, R. C. Iotti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-10-02T13:44:46Z","title":"Sequential multi-photon strategy for semiconductor-based terahertz detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0810.0412","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:e1c2a0d5c13d8527f3f6362632e45216562e57f8452586b9536597eca3d71cd4","target":"record","created_at":"2026-07-04T17:13:03Z","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":"67b12f0f4457322066368f4bda88acd63ae99a4ac229a87dd524f487465f8ffc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2008-10-02T13:44:46Z","title_canon_sha256":"f5f8d7a085bd13644e099020895a21919865efd8a4d3e57d02019bee0dd7a12d"},"schema_version":"1.0","source":{"id":"0810.0412","kind":"arxiv","version":1}},"canonical_sha256":"03a98fe37b5ba38aab0923a217471ebed655556c5719d35265c6db7b26c54743","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"03a98fe37b5ba38aab0923a217471ebed655556c5719d35265c6db7b26c54743","first_computed_at":"2026-07-04T17:13:03.176004Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:13:03.176004Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TkZNhy7kGblXCbdDz9c9B8cuNorxrH2urSMtMiXJ216BLWoY3yknTBB8R3MuPXHkAKsMgt/BouBBX1z4B1/ABA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:13:03.176396Z","signed_message":"canonical_sha256_bytes"},"source_id":"0810.0412","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e1c2a0d5c13d8527f3f6362632e45216562e57f8452586b9536597eca3d71cd4","sha256:877fb7b70b5c73955f25758b52a979368725ebe30e7ef4483643f60108ae51da"],"state_sha256":"24584195e672cb9b82f768d77069fc04871881067daa7eef4ffca72221799bc1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kmW4WtSmatO5YCKiTPLQJx5qjS0r5MsS0dQY0yx9gngOt8A0Au+RskFmH8SWwm4R5rBMbo/Js4VOYagbyAeKDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-22T01:42:24.994167Z","bundle_sha256":"d20b3710d49b50057f057fa718d50085866abfe53313603bd8386f7546a738cd"}}