{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:WIIPOZX5B2EK56NBZ3TCTKIA3F","short_pith_number":"pith:WIIPOZX5","canonical_record":{"source":{"id":"1211.0456","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-02T14:29:27Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"cf232beb02e1706b87a0ca3dbbc035250fff5ec0c5c36f8cf6397eac51ddff06","abstract_canon_sha256":"e56b17bbbeeaadbf7526c0def34d435a4ec70135029809a1b6819affeb67718b"},"schema_version":"1.0"},"canonical_sha256":"b210f766fd0e88aef9a1cee629a900d94a282c09aa876a9061dc1c9ddb1bd97b","source":{"kind":"arxiv","id":"1211.0456","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0456","created_at":"2026-05-18T03:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0456v1","created_at":"2026-05-18T03:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0456","created_at":"2026-05-18T03:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"WIIPOZX5B2EK","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"WIIPOZX5B2EK56NB","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"WIIPOZX5","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:WIIPOZX5B2EK56NBZ3TCTKIA3F","target":"record","payload":{"canonical_record":{"source":{"id":"1211.0456","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-02T14:29:27Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"cf232beb02e1706b87a0ca3dbbc035250fff5ec0c5c36f8cf6397eac51ddff06","abstract_canon_sha256":"e56b17bbbeeaadbf7526c0def34d435a4ec70135029809a1b6819affeb67718b"},"schema_version":"1.0"},"canonical_sha256":"b210f766fd0e88aef9a1cee629a900d94a282c09aa876a9061dc1c9ddb1bd97b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:41:40.926208Z","signature_b64":"ZHeRlZ3I8G/K0HqGVvwZ3BjQ79zKafU562WpzljYRPUPsVtj7FMGN6sf9Dj5SxuxjCcdnSPlvDnirzRRHblaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b210f766fd0e88aef9a1cee629a900d94a282c09aa876a9061dc1c9ddb1bd97b","last_reissued_at":"2026-05-18T03:41:40.925564Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:41:40.925564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1211.0456","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":"2026-05-18T03:41:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r5mD07BzoRY8iyHPWoFWsO0CNWcsP3ztWSp8Do7yz8CcKa4mTtJ627EFJ74nm5KgmQv8gvZR2cJES9F2fuE9CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:27:37.928646Z"},"content_sha256":"f33d84fa855c61e08186bd8c9cec185d4423d91d03ce06532c06242682e9c09d","schema_version":"1.0","event_id":"sha256:f33d84fa855c61e08186bd8c9cec185d4423d91d03ce06532c06242682e9c09d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:WIIPOZX5B2EK56NBZ3TCTKIA3F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast and efficient photodetection in nanoscale quantum-dot junctions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"cond-mat.mes-hall","authors_text":"Arjan J. Houtepen, Ferry Prins, Gilles Buchs, Herre S. J. van der Zant, Johannes S. Seldenthuis, Laurens D. A. Siebbeles, Maria Barkelid, Michele Buscema, Samir Etaki, Val Zwiller, Yunan Gao","submitted_at":"2012-11-02T14:29:27Z","abstract_excerpt":"We report on a photodetector in which colloidal quantum-dots directly bridge nanometer-spaced electrodes. Unlike in conventional quantum-dot thin film photodetectors, charge mobility no longer plays a role in our quantum-dot junctions as charge extraction requires only two individual tunnel events. We find an efficient photoconductive gain mechanism with external quantum-efficiencies of 38 electrons-per-photon in combination with response times faster than 300 ns. This compact device-architecture may open up new routes for improved photodetector performance in which efficiency and bandwidth do"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0456","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":"2026-05-18T03:41:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"frvo8OqAq6b2pQm/Q+pRJeMIwNkCRFzgNn+UPJmwsjI1actYJnqiAgsB09JF34mPFIatm+vATlq+G+lJYjpuBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T11:27:37.928993Z"},"content_sha256":"5d05cb981d0b2afd13c3aba19e1391f64a2096c33ef561289508e775f8cdda3a","schema_version":"1.0","event_id":"sha256:5d05cb981d0b2afd13c3aba19e1391f64a2096c33ef561289508e775f8cdda3a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F/bundle.json","state_url":"https://pith.science/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F/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":"2026-06-01T11:27:37Z","links":{"resolver":"https://pith.science/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F","bundle":"https://pith.science/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F/bundle.json","state":"https://pith.science/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WIIPOZX5B2EK56NBZ3TCTKIA3F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:WIIPOZX5B2EK56NBZ3TCTKIA3F","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":"e56b17bbbeeaadbf7526c0def34d435a4ec70135029809a1b6819affeb67718b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-02T14:29:27Z","title_canon_sha256":"cf232beb02e1706b87a0ca3dbbc035250fff5ec0c5c36f8cf6397eac51ddff06"},"schema_version":"1.0","source":{"id":"1211.0456","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1211.0456","created_at":"2026-05-18T03:41:40Z"},{"alias_kind":"arxiv_version","alias_value":"1211.0456v1","created_at":"2026-05-18T03:41:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.0456","created_at":"2026-05-18T03:41:40Z"},{"alias_kind":"pith_short_12","alias_value":"WIIPOZX5B2EK","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"WIIPOZX5B2EK56NB","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"WIIPOZX5","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:5d05cb981d0b2afd13c3aba19e1391f64a2096c33ef561289508e775f8cdda3a","target":"graph","created_at":"2026-05-18T03:41:40Z","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 on a photodetector in which colloidal quantum-dots directly bridge nanometer-spaced electrodes. Unlike in conventional quantum-dot thin film photodetectors, charge mobility no longer plays a role in our quantum-dot junctions as charge extraction requires only two individual tunnel events. We find an efficient photoconductive gain mechanism with external quantum-efficiencies of 38 electrons-per-photon in combination with response times faster than 300 ns. This compact device-architecture may open up new routes for improved photodetector performance in which efficiency and bandwidth do","authors_text":"Arjan J. Houtepen, Ferry Prins, Gilles Buchs, Herre S. J. van der Zant, Johannes S. Seldenthuis, Laurens D. A. Siebbeles, Maria Barkelid, Michele Buscema, Samir Etaki, Val Zwiller, Yunan Gao","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-02T14:29:27Z","title":"Fast and efficient photodetection in nanoscale quantum-dot junctions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.0456","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:f33d84fa855c61e08186bd8c9cec185d4423d91d03ce06532c06242682e9c09d","target":"record","created_at":"2026-05-18T03:41:40Z","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":"e56b17bbbeeaadbf7526c0def34d435a4ec70135029809a1b6819affeb67718b","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2012-11-02T14:29:27Z","title_canon_sha256":"cf232beb02e1706b87a0ca3dbbc035250fff5ec0c5c36f8cf6397eac51ddff06"},"schema_version":"1.0","source":{"id":"1211.0456","kind":"arxiv","version":1}},"canonical_sha256":"b210f766fd0e88aef9a1cee629a900d94a282c09aa876a9061dc1c9ddb1bd97b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b210f766fd0e88aef9a1cee629a900d94a282c09aa876a9061dc1c9ddb1bd97b","first_computed_at":"2026-05-18T03:41:40.925564Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:41:40.925564Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZHeRlZ3I8G/K0HqGVvwZ3BjQ79zKafU562WpzljYRPUPsVtj7FMGN6sf9Dj5SxuxjCcdnSPlvDnirzRRHblaDw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:41:40.926208Z","signed_message":"canonical_sha256_bytes"},"source_id":"1211.0456","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f33d84fa855c61e08186bd8c9cec185d4423d91d03ce06532c06242682e9c09d","sha256:5d05cb981d0b2afd13c3aba19e1391f64a2096c33ef561289508e775f8cdda3a"],"state_sha256":"cb539902892771c5b82912aa2b9b187597ea12b5a6494aa72315888cb9d27ffc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OQoIjPJYdUsxuEE4gjor7iVznE0qZstQGLXupYcyHOwVctpqMXj0ZhOQJx2I7y0VeA3nWplVXwPQ68VXO6HbBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T11:27:37.930901Z","bundle_sha256":"521bd955298ea252b8bae9fb7220b34f41ecfdeb53d17d8e083d2e2fd63c0e45"}}