{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:BXIKSGUEQUU5Q3UCYBUZLCAEFW","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":"84e1bcf1191bb4698d1dd8edd2451ad4ad35d94e618cbc5997fe9c2ea3e8bbb7","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-30T09:16:01Z","title_canon_sha256":"c6b7b608841050912aea1bc2e5302a7e5f94675f8c0124e286ef75ec4de98e49"},"schema_version":"1.0","source":{"id":"1710.10815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.10815","created_at":"2026-05-18T00:31:46Z"},{"alias_kind":"arxiv_version","alias_value":"1710.10815v1","created_at":"2026-05-18T00:31:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.10815","created_at":"2026-05-18T00:31:46Z"},{"alias_kind":"pith_short_12","alias_value":"BXIKSGUEQUU5","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_16","alias_value":"BXIKSGUEQUU5Q3UC","created_at":"2026-05-18T12:31:08Z"},{"alias_kind":"pith_short_8","alias_value":"BXIKSGUE","created_at":"2026-05-18T12:31:08Z"}],"graph_snapshots":[{"event_id":"sha256:e96dd9ac7ed1e4055d4867a92bbb393f20179b294a914203a530adfbf83aa5e0","target":"graph","created_at":"2026-05-18T00:31:46Z","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":"Realizing perfect two-photon entanglement from quantum dots has been a long-standing scientific challenge. It is generally thought that the nuclear spins limit the entanglement fidelity through spin flip dephasing processes. However, this assumption lacks experimental support. Here, we show dephasing-free two-photon entanglement from an Indium rich single quantum dot comprising of nuclear spin 9/2 when excited quasi-resonantly. This remarkable finding is based on a perfect match between our entanglement measurements with our model that assumes no dephasing and takes into account the detection ","authors_text":"A. Ahmadi, A. Fognini, D. Dalacu, J. T. Fokkens, K. D. J\\\"ons, M. E. Reimer, M. Zeeshan, N. Sherlekar, P. J. Poole, S. J. Daley, S. J. Gibson, V. Zwiller","cross_cats":["cond-mat.mes-hall","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-30T09:16:01Z","title":"Path to perfect photon entanglement with a quantum dot"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.10815","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:a1e20e0986d48dbff71b84a91691b4ed7167fefe8259d8207a339080cdeefe9e","target":"record","created_at":"2026-05-18T00:31:46Z","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":"84e1bcf1191bb4698d1dd8edd2451ad4ad35d94e618cbc5997fe9c2ea3e8bbb7","cross_cats_sorted":["cond-mat.mes-hall","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-10-30T09:16:01Z","title_canon_sha256":"c6b7b608841050912aea1bc2e5302a7e5f94675f8c0124e286ef75ec4de98e49"},"schema_version":"1.0","source":{"id":"1710.10815","kind":"arxiv","version":1}},"canonical_sha256":"0dd0a91a848529d86e82c0699588042d89e636f08c986ffaf161526a3f8b035a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0dd0a91a848529d86e82c0699588042d89e636f08c986ffaf161526a3f8b035a","first_computed_at":"2026-05-18T00:31:46.412439Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:31:46.412439Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RGCU/LAgMH4AGv7KwNnmpbYvH00AlsLjAVviZS/a6O+ccdY239aytaGAQ3t/7aBAjd101wdkXzyjj8mHjzAGAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:31:46.413080Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.10815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1e20e0986d48dbff71b84a91691b4ed7167fefe8259d8207a339080cdeefe9e","sha256:e96dd9ac7ed1e4055d4867a92bbb393f20179b294a914203a530adfbf83aa5e0"],"state_sha256":"982934d3b3c5ee7230caf9f88d46d05820be683645eeb338875d81fbe5417594"}