{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:YQK5LKG655PQTJGYQWMDMGC2HF","short_pith_number":"pith:YQK5LKG6","canonical_record":{"source":{"id":"1801.06655","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-20T10:49:31Z","cross_cats_sorted":[],"title_canon_sha256":"e4e1fbac7dd3119e6b53b44df400d8ab0c7c879a265ac07e5ce59f0e1b578c82","abstract_canon_sha256":"1cf7d4d719817d118d6b27489f846ca7435170978352faef14914f6135c332cc"},"schema_version":"1.0"},"canonical_sha256":"c415d5a8deef5f09a4d8859836185a397b685c8ed85fbc261d85ceac138695bc","source":{"kind":"arxiv","id":"1801.06655","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.06655","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"arxiv_version","alias_value":"1801.06655v3","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06655","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"pith_short_12","alias_value":"YQK5LKG655PQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YQK5LKG655PQTJGY","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YQK5LKG6","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:YQK5LKG655PQTJGYQWMDMGC2HF","target":"record","payload":{"canonical_record":{"source":{"id":"1801.06655","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-20T10:49:31Z","cross_cats_sorted":[],"title_canon_sha256":"e4e1fbac7dd3119e6b53b44df400d8ab0c7c879a265ac07e5ce59f0e1b578c82","abstract_canon_sha256":"1cf7d4d719817d118d6b27489f846ca7435170978352faef14914f6135c332cc"},"schema_version":"1.0"},"canonical_sha256":"c415d5a8deef5f09a4d8859836185a397b685c8ed85fbc261d85ceac138695bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:41.556176Z","signature_b64":"kgNR6qeC/v4zQvOaQmvlrTe19kf+787ZUL4aefccPyHht0Zq41Oq+xMWyzid6jSba35COZi9bj00WiNtzQDSCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c415d5a8deef5f09a4d8859836185a397b685c8ed85fbc261d85ceac138695bc","last_reissued_at":"2026-05-18T00:03:41.555742Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:41.555742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1801.06655","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:03:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sgVc+Zv/7G+CouIJAjutbVMOO8LZ8BCFrS25sPljhKlHJ/0oNQQkaO/e4ldAP97TqS9TYkBcCrBpUZ+pkQteBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:33:52.202328Z"},"content_sha256":"d9a127b13453616d3da0d86f3730647aaa6accd7f9594d713a2ad826d3570765","schema_version":"1.0","event_id":"sha256:d9a127b13453616d3da0d86f3730647aaa6accd7f9594d713a2ad826d3570765"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:YQK5LKG655PQTJGYQWMDMGC2HF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strain-Tunable GaAs Quantum dot: A Nearly Dephasing-Free Source of Entangled Photon Pairs on Demand","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Armando Rastelli, Christian Schimpf, Daniel Huber, Giovanni Piredda, Huiying Huang, Javier Martin-Sanchez, Johannes Edlinger, Marcus Reindl, Rinaldo Trotta, Saimon Filipe Covre da Silva","submitted_at":"2018-01-20T10:49:31Z","abstract_excerpt":"Entangled photon generation from semiconductor quantum dots via the biexciton-exciton cascade underlies various decoherence mechanisms related to the solid-state nature of the quantum emitters. So far, this has prevented the demonstration of nearly-maximally entangled photons without the aid of inefficient and complex post-selection techniques that are hardly suitable for quantum communication technologies. Here, we tackle this challenge using strain-tunable GaAs quantum dots driven under two-photon resonant excitation and with strictly-degenerate exciton states. We demonstrate experimentally "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06655","kind":"arxiv","version":3},"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":"2026-05-18T00:03:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OuGA3XDZ4T5SKclcXj+ZP0xxtXILDESnJhePahQu4EScbTflfwEsTzLOrbXUOBEr4S11H/vEtgjRdfDLgZD3CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T03:33:52.202692Z"},"content_sha256":"36c41f5ca8bd22fc755e95009ee8124801c49b5ec33fab7453b18791174ac7fc","schema_version":"1.0","event_id":"sha256:36c41f5ca8bd22fc755e95009ee8124801c49b5ec33fab7453b18791174ac7fc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YQK5LKG655PQTJGYQWMDMGC2HF/bundle.json","state_url":"https://pith.science/pith/YQK5LKG655PQTJGYQWMDMGC2HF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YQK5LKG655PQTJGYQWMDMGC2HF/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":"2026-05-31T03:33:52Z","links":{"resolver":"https://pith.science/pith/YQK5LKG655PQTJGYQWMDMGC2HF","bundle":"https://pith.science/pith/YQK5LKG655PQTJGYQWMDMGC2HF/bundle.json","state":"https://pith.science/pith/YQK5LKG655PQTJGYQWMDMGC2HF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YQK5LKG655PQTJGYQWMDMGC2HF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:YQK5LKG655PQTJGYQWMDMGC2HF","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":"1cf7d4d719817d118d6b27489f846ca7435170978352faef14914f6135c332cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-20T10:49:31Z","title_canon_sha256":"e4e1fbac7dd3119e6b53b44df400d8ab0c7c879a265ac07e5ce59f0e1b578c82"},"schema_version":"1.0","source":{"id":"1801.06655","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1801.06655","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"arxiv_version","alias_value":"1801.06655v3","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1801.06655","created_at":"2026-05-18T00:03:41Z"},{"alias_kind":"pith_short_12","alias_value":"YQK5LKG655PQ","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"YQK5LKG655PQTJGY","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"YQK5LKG6","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:36c41f5ca8bd22fc755e95009ee8124801c49b5ec33fab7453b18791174ac7fc","target":"graph","created_at":"2026-05-18T00:03:41Z","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":"Entangled photon generation from semiconductor quantum dots via the biexciton-exciton cascade underlies various decoherence mechanisms related to the solid-state nature of the quantum emitters. So far, this has prevented the demonstration of nearly-maximally entangled photons without the aid of inefficient and complex post-selection techniques that are hardly suitable for quantum communication technologies. Here, we tackle this challenge using strain-tunable GaAs quantum dots driven under two-photon resonant excitation and with strictly-degenerate exciton states. We demonstrate experimentally ","authors_text":"Armando Rastelli, Christian Schimpf, Daniel Huber, Giovanni Piredda, Huiying Huang, Javier Martin-Sanchez, Johannes Edlinger, Marcus Reindl, Rinaldo Trotta, Saimon Filipe Covre da Silva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-20T10:49:31Z","title":"Strain-Tunable GaAs Quantum dot: A Nearly Dephasing-Free Source of Entangled Photon Pairs on Demand"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1801.06655","kind":"arxiv","version":3},"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:d9a127b13453616d3da0d86f3730647aaa6accd7f9594d713a2ad826d3570765","target":"record","created_at":"2026-05-18T00:03:41Z","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":"1cf7d4d719817d118d6b27489f846ca7435170978352faef14914f6135c332cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-01-20T10:49:31Z","title_canon_sha256":"e4e1fbac7dd3119e6b53b44df400d8ab0c7c879a265ac07e5ce59f0e1b578c82"},"schema_version":"1.0","source":{"id":"1801.06655","kind":"arxiv","version":3}},"canonical_sha256":"c415d5a8deef5f09a4d8859836185a397b685c8ed85fbc261d85ceac138695bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c415d5a8deef5f09a4d8859836185a397b685c8ed85fbc261d85ceac138695bc","first_computed_at":"2026-05-18T00:03:41.555742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:41.555742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kgNR6qeC/v4zQvOaQmvlrTe19kf+787ZUL4aefccPyHht0Zq41Oq+xMWyzid6jSba35COZi9bj00WiNtzQDSCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:41.556176Z","signed_message":"canonical_sha256_bytes"},"source_id":"1801.06655","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9a127b13453616d3da0d86f3730647aaa6accd7f9594d713a2ad826d3570765","sha256:36c41f5ca8bd22fc755e95009ee8124801c49b5ec33fab7453b18791174ac7fc"],"state_sha256":"d08af5f17c36056843142b64330c25f84eac157243d145f4d714ca1af6a2bb2d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bRGpCdbCkFaAVEQhFnH7paAT2z4UUODVJH/IcM95Ls/Hv7N/YEaHWqMPvWiBNM151yR/7i3b8cTXAzqYOY4UBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T03:33:52.204699Z","bundle_sha256":"e04d207da5b846f4903aa476a654ea45bf060c8fcdcf1cee8368987d27be091a"}}