{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2003:WJTQDDUD6EGOWLXUT23MS6VBSI","short_pith_number":"pith:WJTQDDUD","canonical_record":{"source":{"id":"cond-mat/0311020","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-11-02T21:14:02Z","cross_cats_sorted":[],"title_canon_sha256":"080ac2e54f484ca603667d93f7b7b3624cbe1f216c7e22cbd31d913d0c07c37f","abstract_canon_sha256":"180216271b0add52e04eab0240dd76d2e7ae6e1c0dba4df7d30ebf28ee2324da"},"schema_version":"1.0"},"canonical_sha256":"b267018e83f10ceb2ef49eb6c97aa1920fd0f997cfd88bb0f08681b60572ba0c","source":{"kind":"arxiv","id":"cond-mat/0311020","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0311020","created_at":"2026-05-18T01:39:58Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0311020v1","created_at":"2026-05-18T01:39:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0311020","created_at":"2026-05-18T01:39:58Z"},{"alias_kind":"pith_short_12","alias_value":"WJTQDDUD6EGO","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"WJTQDDUD6EGOWLXU","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"WJTQDDUD","created_at":"2026-05-18T12:25:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2003:WJTQDDUD6EGOWLXUT23MS6VBSI","target":"record","payload":{"canonical_record":{"source":{"id":"cond-mat/0311020","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-11-02T21:14:02Z","cross_cats_sorted":[],"title_canon_sha256":"080ac2e54f484ca603667d93f7b7b3624cbe1f216c7e22cbd31d913d0c07c37f","abstract_canon_sha256":"180216271b0add52e04eab0240dd76d2e7ae6e1c0dba4df7d30ebf28ee2324da"},"schema_version":"1.0"},"canonical_sha256":"b267018e83f10ceb2ef49eb6c97aa1920fd0f997cfd88bb0f08681b60572ba0c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:58.940673Z","signature_b64":"TNVDr9G+oV2wrcVYlHFgvJcuofA8PPYtuKkF2Zy26URBJL+6dycL3vo09MxyokQ0kYcaaYEtlz0E4NRnHkI1Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b267018e83f10ceb2ef49eb6c97aa1920fd0f997cfd88bb0f08681b60572ba0c","last_reissued_at":"2026-05-18T01:39:58.940176Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:58.940176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"cond-mat/0311020","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":"2026-05-18T01:39:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xgkOx7Cg9Yp/ou+XSd1jfh0RSyCT5iEGply83U4T6Aogt/sGmVfOkinmP9trGUZdERKxuAQbWp8K4+l1gHUNAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:03:44.153405Z"},"content_sha256":"2b4c6a9b1b5afe58666fb3c7c7670fc2b0258ccdb40c041d30f627221b6a0bc9","schema_version":"1.0","event_id":"sha256:2b4c6a9b1b5afe58666fb3c7c7670fc2b0258ccdb40c041d30f627221b6a0bc9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2003:WJTQDDUD6EGOWLXUT23MS6VBSI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Efficient electron spin detection with positively charged quantum dots","license":"","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"D. G. Deppe, K. C. Hall, K. Gundogdu, O. B. Shchekin, Thomas F. Boggess","submitted_at":"2003-11-02T21:14:02Z","abstract_excerpt":"We report the application of time- and polarization-resolved photoluminescence up-conversion spectroscopy to the study of spin capture and energy relaxation in positively and negatively charged, as well as neutral, InAs self-assembled quantum dots. When compared to the neutral dots, we find that carrier capture and relaxation to the ground state is much faster in the highly charged dots, suggesting that electron-hole scattering dominates this process. The long spin lifetime, short capture time, and high radiative efficiency of the positively charged dots, indicates that these structures are su"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0311020","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":"2026-05-18T01:39:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bgyqb8a/ylmcZkC0bFPxnZEanE7YbuIcJnIYEPxBIN5cV3QAD90DkxMeqapu9JThPf9PXi6Rq6LShG2O7E/eBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T10:03:44.153760Z"},"content_sha256":"10732806b0697d461f029836633f462605bea53c2fd564d5d2a7a7c68ff18a06","schema_version":"1.0","event_id":"sha256:10732806b0697d461f029836633f462605bea53c2fd564d5d2a7a7c68ff18a06"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WJTQDDUD6EGOWLXUT23MS6VBSI/bundle.json","state_url":"https://pith.science/pith/WJTQDDUD6EGOWLXUT23MS6VBSI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WJTQDDUD6EGOWLXUT23MS6VBSI/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":"2026-06-02T10:03:44Z","links":{"resolver":"https://pith.science/pith/WJTQDDUD6EGOWLXUT23MS6VBSI","bundle":"https://pith.science/pith/WJTQDDUD6EGOWLXUT23MS6VBSI/bundle.json","state":"https://pith.science/pith/WJTQDDUD6EGOWLXUT23MS6VBSI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WJTQDDUD6EGOWLXUT23MS6VBSI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:WJTQDDUD6EGOWLXUT23MS6VBSI","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":"180216271b0add52e04eab0240dd76d2e7ae6e1c0dba4df7d30ebf28ee2324da","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-11-02T21:14:02Z","title_canon_sha256":"080ac2e54f484ca603667d93f7b7b3624cbe1f216c7e22cbd31d913d0c07c37f"},"schema_version":"1.0","source":{"id":"cond-mat/0311020","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"cond-mat/0311020","created_at":"2026-05-18T01:39:58Z"},{"alias_kind":"arxiv_version","alias_value":"cond-mat/0311020v1","created_at":"2026-05-18T01:39:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.cond-mat/0311020","created_at":"2026-05-18T01:39:58Z"},{"alias_kind":"pith_short_12","alias_value":"WJTQDDUD6EGO","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_16","alias_value":"WJTQDDUD6EGOWLXU","created_at":"2026-05-18T12:25:52Z"},{"alias_kind":"pith_short_8","alias_value":"WJTQDDUD","created_at":"2026-05-18T12:25:52Z"}],"graph_snapshots":[{"event_id":"sha256:10732806b0697d461f029836633f462605bea53c2fd564d5d2a7a7c68ff18a06","target":"graph","created_at":"2026-05-18T01:39:58Z","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 report the application of time- and polarization-resolved photoluminescence up-conversion spectroscopy to the study of spin capture and energy relaxation in positively and negatively charged, as well as neutral, InAs self-assembled quantum dots. When compared to the neutral dots, we find that carrier capture and relaxation to the ground state is much faster in the highly charged dots, suggesting that electron-hole scattering dominates this process. The long spin lifetime, short capture time, and high radiative efficiency of the positively charged dots, indicates that these structures are su","authors_text":"D. G. Deppe, K. C. Hall, K. Gundogdu, O. B. Shchekin, Thomas F. Boggess","cross_cats":[],"headline":"","license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-11-02T21:14:02Z","title":"Efficient electron spin detection with positively charged quantum dots"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"cond-mat/0311020","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":"sha256:2b4c6a9b1b5afe58666fb3c7c7670fc2b0258ccdb40c041d30f627221b6a0bc9","target":"record","created_at":"2026-05-18T01:39:58Z","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":"180216271b0add52e04eab0240dd76d2e7ae6e1c0dba4df7d30ebf28ee2324da","cross_cats_sorted":[],"license":"","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2003-11-02T21:14:02Z","title_canon_sha256":"080ac2e54f484ca603667d93f7b7b3624cbe1f216c7e22cbd31d913d0c07c37f"},"schema_version":"1.0","source":{"id":"cond-mat/0311020","kind":"arxiv","version":1}},"canonical_sha256":"b267018e83f10ceb2ef49eb6c97aa1920fd0f997cfd88bb0f08681b60572ba0c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b267018e83f10ceb2ef49eb6c97aa1920fd0f997cfd88bb0f08681b60572ba0c","first_computed_at":"2026-05-18T01:39:58.940176Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:58.940176Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TNVDr9G+oV2wrcVYlHFgvJcuofA8PPYtuKkF2Zy26URBJL+6dycL3vo09MxyokQ0kYcaaYEtlz0E4NRnHkI1Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:58.940673Z","signed_message":"canonical_sha256_bytes"},"source_id":"cond-mat/0311020","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2b4c6a9b1b5afe58666fb3c7c7670fc2b0258ccdb40c041d30f627221b6a0bc9","sha256:10732806b0697d461f029836633f462605bea53c2fd564d5d2a7a7c68ff18a06"],"state_sha256":"8cbc57135158b0bf34e1e35943c1c6ab1a2f5594ca1f4bfc123fec1c6b81f1ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kWiwyZem2JSEhwaqkeAoPMLQmzfYPBVKKcSFxkjtvukSzRlY2L/oFVFVPzCBcwnhS6PTOprFDbnwNtpdNtQRBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T10:03:44.155733Z","bundle_sha256":"a22352d287356dedee0063825c471bd3106f79417ca18b80f7e90bc64f6195d5"}}