{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:2WH2LPCED4F53GTAJKNP3PAJKI","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":"fa2eea0c7eba64911431856aac4e9662474e0b2fb7a3a650c372f1295f8b3e35","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-03T13:59:07Z","title_canon_sha256":"48648d4a44d02ae3bb5296bee09335cccf6bf68df97b5ec138625b5898fd67ab"},"schema_version":"1.0","source":{"id":"1406.0714","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.0714","created_at":"2026-05-18T01:30:25Z"},{"alias_kind":"arxiv_version","alias_value":"1406.0714v2","created_at":"2026-05-18T01:30:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.0714","created_at":"2026-05-18T01:30:25Z"},{"alias_kind":"pith_short_12","alias_value":"2WH2LPCED4F5","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"2WH2LPCED4F53GTA","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"2WH2LPCE","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:4eb416548d0c7254bb1f2b59e85e5250ef8b26c31bd57d2ffc73af35808090c4","target":"graph","created_at":"2026-05-18T01:30:25Z","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":"By performing a full analysis of the projected local density of states (LDOS) in a photonic crystal waveguide, we show that phase plays a crucial role in the symmetry of the light-matter interaction. By considering a quantum dot (QD) spin coupled to a photonic crystal waveguide (PCW) mode, we demonstrate that the light-matter interaction can be asymmetric, leading to unidirectional emission and a deterministic entangled photon source. Further we show that understanding the phase associated with both the LDOS and the QD spin is essential for a range of devices that that can be realised with a Q","authors_text":"Andrew B. Young, Arthur Thijssen, Daryl M. Beggs, John G. Rarity, L. Kuipers, Petros Androvitsaneas, Ruth Oulton, Stephen Hughes","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-03T13:59:07Z","title":"Polarization engineering in photonic crystal waveguides for spin-photon entanglers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.0714","kind":"arxiv","version":2},"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:c5bed5758cc1fe3df5e8d8e4bba52108b236ce3376d729c3054518afe7db11ba","target":"record","created_at":"2026-05-18T01:30:25Z","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":"fa2eea0c7eba64911431856aac4e9662474e0b2fb7a3a650c372f1295f8b3e35","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-06-03T13:59:07Z","title_canon_sha256":"48648d4a44d02ae3bb5296bee09335cccf6bf68df97b5ec138625b5898fd67ab"},"schema_version":"1.0","source":{"id":"1406.0714","kind":"arxiv","version":2}},"canonical_sha256":"d58fa5bc441f0bdd9a604a9afdbc095213db92ac16b05fcaca6d8f2438493dfd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d58fa5bc441f0bdd9a604a9afdbc095213db92ac16b05fcaca6d8f2438493dfd","first_computed_at":"2026-05-18T01:30:25.844863Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:25.844863Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HHTwU5J6UEH1fu3gwTYYf1pkrnq+TNbq9hiNxopF+3haO4ln4D5UV2p5ePPXy1E4KGSFAuZ1M1eMhn2PFc9cBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:25.845513Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.0714","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c5bed5758cc1fe3df5e8d8e4bba52108b236ce3376d729c3054518afe7db11ba","sha256:4eb416548d0c7254bb1f2b59e85e5250ef8b26c31bd57d2ffc73af35808090c4"],"state_sha256":"e75ba4963962a6c455e80bb796964cfbbc08cf11849d4dfd2ed6e5189b8d1384"}