{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:XRTRCKRKPIB3JIHRTFZMNF7SVK","short_pith_number":"pith:XRTRCKRK","canonical_record":{"source":{"id":"0803.1037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2008-03-07T10:07:34Z","cross_cats_sorted":[],"title_canon_sha256":"4aaf5e4a62cd58dd88e86c6ca2cf2926a8f0205e19dcc95c405ba8f03f38c8e0","abstract_canon_sha256":"6d8d2e25a6cf36a242e30e3738c23ecde55661f291d9184ebbbd9262ff3f8b85"},"schema_version":"1.0"},"canonical_sha256":"bc67112a2a7a03b4a0f19972c697f2aa9bd8ae65d251d06e61d7ce6e5f950723","source":{"kind":"arxiv","id":"0803.1037","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0803.1037","created_at":"2026-05-18T03:24:43Z"},{"alias_kind":"arxiv_version","alias_value":"0803.1037v1","created_at":"2026-05-18T03:24:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0803.1037","created_at":"2026-05-18T03:24:43Z"},{"alias_kind":"pith_short_12","alias_value":"XRTRCKRKPIB3","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"XRTRCKRKPIB3JIHR","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"XRTRCKRK","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:XRTRCKRKPIB3JIHRTFZMNF7SVK","target":"record","payload":{"canonical_record":{"source":{"id":"0803.1037","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2008-03-07T10:07:34Z","cross_cats_sorted":[],"title_canon_sha256":"4aaf5e4a62cd58dd88e86c6ca2cf2926a8f0205e19dcc95c405ba8f03f38c8e0","abstract_canon_sha256":"6d8d2e25a6cf36a242e30e3738c23ecde55661f291d9184ebbbd9262ff3f8b85"},"schema_version":"1.0"},"canonical_sha256":"bc67112a2a7a03b4a0f19972c697f2aa9bd8ae65d251d06e61d7ce6e5f950723","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:24:43.076944Z","signature_b64":"SA9UBwSEZvpZhojBJBw2Qmi7/WCy1rf63lBhhtsZSRU2RxgLmVs/qOgIfQVJh1ruzTXU3HFDTZuTylKjczTkDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bc67112a2a7a03b4a0f19972c697f2aa9bd8ae65d251d06e61d7ce6e5f950723","last_reissued_at":"2026-05-18T03:24:43.076289Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:24:43.076289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0803.1037","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":"2026-05-18T03:24:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TyFy+ksrKHYBSKwThJbOFlZEWoNSI1DlWNfG0plYKmPE5bQN3R87cRl9OrC6bEyGibikGmFV+H2pH78TvTzGBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:52:34.210862Z"},"content_sha256":"09a855d93564db9c4b9596f15b5c1446dcc41f49b74dcb648f9df0d3193da1e6","schema_version":"1.0","event_id":"sha256:09a855d93564db9c4b9596f15b5c1446dcc41f49b74dcb648f9df0d3193da1e6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:XRTRCKRKPIB3JIHRTFZMNF7SVK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical-phonon mediated exciton energy relaxation with highly preserved spin states Optical-phonon mediated exciton energy relaxation with highly preserved spin states in a single quantum dot","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"H. Kobayashi, H. Kumano, H. Sasakura, I. Suemune, M. Jo, S. Adachi, S. Ekuni, S. Muto, Y. Hayashi","submitted_at":"2008-03-07T10:07:34Z","abstract_excerpt":"High degree of preservation of spin states during energy relaxation processes mediated by optical phonons is demonstrated in a single quantum dot. Optical-phonon resonance and relevant suppression of spin relaxation are clearly identified as dip structures in photoluminescence excitation spectra probed by the positive trion emission. The absence of continuum states makes this observation possible under the cross-circularly polarized detection with respect to a circularly polarized pumping. Consequently, distinguishably high degree of circular polarization up to ~0.85 is achieved without applyi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0803.1037","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":"2026-05-18T03:24:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i9JBo+DoazmAHsl5bY/zZ5mAxVEL7v1SXjpXOIheBGys1R6Gz9hJVmVOMWdV9tTdjTW+rFMNNvhL0Nhbd28vBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:52:34.211213Z"},"content_sha256":"8d8a21f74454385f6d812c551eb5120b908cb730b4d7aacc3383ae5f569c63f5","schema_version":"1.0","event_id":"sha256:8d8a21f74454385f6d812c551eb5120b908cb730b4d7aacc3383ae5f569c63f5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK/bundle.json","state_url":"https://pith.science/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK/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":"2026-05-26T22:52:34Z","links":{"resolver":"https://pith.science/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK","bundle":"https://pith.science/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK/bundle.json","state":"https://pith.science/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XRTRCKRKPIB3JIHRTFZMNF7SVK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:XRTRCKRKPIB3JIHRTFZMNF7SVK","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":"6d8d2e25a6cf36a242e30e3738c23ecde55661f291d9184ebbbd9262ff3f8b85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2008-03-07T10:07:34Z","title_canon_sha256":"4aaf5e4a62cd58dd88e86c6ca2cf2926a8f0205e19dcc95c405ba8f03f38c8e0"},"schema_version":"1.0","source":{"id":"0803.1037","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0803.1037","created_at":"2026-05-18T03:24:43Z"},{"alias_kind":"arxiv_version","alias_value":"0803.1037v1","created_at":"2026-05-18T03:24:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0803.1037","created_at":"2026-05-18T03:24:43Z"},{"alias_kind":"pith_short_12","alias_value":"XRTRCKRKPIB3","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"XRTRCKRKPIB3JIHR","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"XRTRCKRK","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:8d8a21f74454385f6d812c551eb5120b908cb730b4d7aacc3383ae5f569c63f5","target":"graph","created_at":"2026-05-18T03:24:43Z","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":"High degree of preservation of spin states during energy relaxation processes mediated by optical phonons is demonstrated in a single quantum dot. Optical-phonon resonance and relevant suppression of spin relaxation are clearly identified as dip structures in photoluminescence excitation spectra probed by the positive trion emission. The absence of continuum states makes this observation possible under the cross-circularly polarized detection with respect to a circularly polarized pumping. Consequently, distinguishably high degree of circular polarization up to ~0.85 is achieved without applyi","authors_text":"H. Kobayashi, H. Kumano, H. Sasakura, I. Suemune, M. Jo, S. Adachi, S. Ekuni, S. Muto, Y. Hayashi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2008-03-07T10:07:34Z","title":"Optical-phonon mediated exciton energy relaxation with highly preserved spin states Optical-phonon mediated exciton energy relaxation with highly preserved spin states in a single quantum dot"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0803.1037","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":"sha256:09a855d93564db9c4b9596f15b5c1446dcc41f49b74dcb648f9df0d3193da1e6","target":"record","created_at":"2026-05-18T03:24:43Z","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":"6d8d2e25a6cf36a242e30e3738c23ecde55661f291d9184ebbbd9262ff3f8b85","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2008-03-07T10:07:34Z","title_canon_sha256":"4aaf5e4a62cd58dd88e86c6ca2cf2926a8f0205e19dcc95c405ba8f03f38c8e0"},"schema_version":"1.0","source":{"id":"0803.1037","kind":"arxiv","version":1}},"canonical_sha256":"bc67112a2a7a03b4a0f19972c697f2aa9bd8ae65d251d06e61d7ce6e5f950723","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bc67112a2a7a03b4a0f19972c697f2aa9bd8ae65d251d06e61d7ce6e5f950723","first_computed_at":"2026-05-18T03:24:43.076289Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:24:43.076289Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SA9UBwSEZvpZhojBJBw2Qmi7/WCy1rf63lBhhtsZSRU2RxgLmVs/qOgIfQVJh1ruzTXU3HFDTZuTylKjczTkDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:24:43.076944Z","signed_message":"canonical_sha256_bytes"},"source_id":"0803.1037","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:09a855d93564db9c4b9596f15b5c1446dcc41f49b74dcb648f9df0d3193da1e6","sha256:8d8a21f74454385f6d812c551eb5120b908cb730b4d7aacc3383ae5f569c63f5"],"state_sha256":"23246a451f2b3e230ac69a23c004f0f7b19f1a36a5b0a0e74f71712bd0adb347"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NKeORIvKHscHwM+dc+HeUuUQO96Jf/tv8Y1cGKQMV7b7OD8PiTxtZclxunB51/SZuRVxvAo2yF9dWo5BO+cFAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T22:52:34.213886Z","bundle_sha256":"781f69cee82f6c25fa3102100b0a3094f53c4cc37a8925360e1e494b36c4762d"}}