{"paper":{"title":"Crosstalk-free Chiral Anomaly Bulk States in Photonic Crystals","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Interfacing Dirac photonic crystals at different Brillouin zone points decouples chiral anomaly bulk states to eliminate crosstalk.","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Guochao Wei, JunJun Xiao, Kang Du, Shengxiang Wang, Wei Zhu, Yingfeng Qi, Zhen Gao, Zhenzhen Liu","submitted_at":"2026-05-18T00:36:53Z","abstract_excerpt":"Ultracompact cladding-free waveguide arrays with zero inter-channel spacing and negligible crosstalk open a new avenue for high-density integrated photonic circuits. However, existing cladding-free waveguide arrays typically rely on conventional trivial bulk modes, making them highly susceptible to scattering losses at sharp bends or in the presence of obstacles and defects. To overcome this limitation, we theoretically propose and experimentally demonstrate a robust, crosstalk-free, and cladding-free photonic waveguide array based on chiral anomaly bulk states (CABSs) in photonic crystals. By"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"By interfacing distinct Dirac photonic crystals that host Dirac cones at different high-symmetry points (Γ and K) and carefully engineering the boundary conditions, the boundary-induced CABSs in adjacent channels become effectively decoupled due to a large momentum separation, thereby eliminating inter-channel crosstalk, with experimental robustness to metallic obstacles, air defects, and sharp bends.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The large momentum separation between CABSs originating from Γ and K points is assumed to be sufficient to prevent any residual coupling or scattering at the engineered interfaces and boundaries without additional losses or mode mixing.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Demonstration of momentum-decoupled chiral anomaly bulk states enabling crosstalk-free, cladding-free waveguide arrays in photonic crystals with experimental robustness to defects and extension to 2D resonators and crossings.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Interfacing Dirac photonic crystals at different Brillouin zone points decouples chiral anomaly bulk states to eliminate crosstalk.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"fbd9e3eb3a4b56b6208aa1fde313365bed0ee0c732805ccd8fa37861eceb3b60"},"source":{"id":"2605.17717","kind":"arxiv","version":1},"verdict":{"id":"4b9832a8-f524-4158-87b9-603808f98544","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-19T22:27:28.164060Z","strongest_claim":"By interfacing distinct Dirac photonic crystals that host Dirac cones at different high-symmetry points (Γ and K) and carefully engineering the boundary conditions, the boundary-induced CABSs in adjacent channels become effectively decoupled due to a large momentum separation, thereby eliminating inter-channel crosstalk, with experimental robustness to metallic obstacles, air defects, and sharp bends.","one_line_summary":"Demonstration of momentum-decoupled chiral anomaly bulk states enabling crosstalk-free, cladding-free waveguide arrays in photonic crystals with experimental robustness to defects and extension to 2D resonators and crossings.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The large momentum separation between CABSs originating from Γ and K points is assumed to be sufficient to prevent any residual coupling or scattering at the engineered interfaces and boundaries without additional losses or mode mixing.","pith_extraction_headline":"Interfacing Dirac photonic crystals at different Brillouin zone points decouples chiral anomaly bulk states to eliminate crosstalk."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2605.17717/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"doi_title_agreement","ran_at":"2026-05-19T23:01:19.376208Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T22:40:53.796103Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"shingle_duplication","ran_at":"2026-05-19T21:49:43.469909Z","status":"skipped","version":"0.1.0","findings_count":0},{"name":"citation_quote_validity","ran_at":"2026-05-19T21:49:43.299352Z","status":"skipped","version":"0.1.0","findings_count":0},{"name":"ai_meta_artifact","ran_at":"2026-05-19T21:33:23.503198Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"cited_work_retraction","ran_at":"2026-05-19T21:21:57.828869Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T21:21:57.406826Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"29c3fb465f7986a89bf007501feaa4dcae8bccb8181416ee82c71e48b21d1f49"},"references":{"count":54,"sample":[{"doi":"","year":2015,"title":"W. Song, R. Gatdula, S. Abbaslou, M. Lu, A. Stein, W. Y . C. Lai, J. Provine, R. F. W. Pease, D. N. Christodoulides, and W. Jiang, High-density waveguide superlattices with low crosstalk, Nat. Commun.","work_id":"d63b4ad4-aa30-4209-a241-2f66dfa56b56","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2026,"title":"C. L. Craft, N. J. Barton, A. C. Klug, K. Scalzi, I. Wildemann, P. Asagodu, J. D. Broz, N. L. Porto, M. Macalik, A. Rizzo, G. Percevault, C. C. Tison, A. M. Smith, M. L. Fanto, J. Schneeloch, E. Sheri","work_id":"3a2e499c-248f-493d-9472-0390ddd58c8c","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2023,"title":"Z. Lin, W. Song, J. Sun, X. Li, C. Huang, S. Wu, H. Xin, S. Zhu, and T. Li, Ultrabroadband low- crosstalk dense lithium niobate waveguides by Floquet engineering, Phys. Rev. Appl. 20, 054005 (2023)","work_id":"40e3a11e-111f-4ffb-b696-289eedadc650","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2016,"title":"B. Shen, R. Polson, and R. Menon, Increasing the density of passive photonic-integrated circuits via nanophotonic cloaking, Nat. Commun. 7, 13126 (2016)","work_id":"991c33cd-eb40-4804-a39c-1ccb43d8b882","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2019,"title":"R. Gatdula, S. Abbaslou, M. Lu, A. Stein, and W. Jiang, Guiding light in bent waveguide superlattices with low crosstalk, Optica 6, 585 (2019)","work_id":"3fd2c15f-df7f-432f-a850-cd4090c0404d","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":54,"snapshot_sha256":"8473c0c5530491a2423c21d50bc4503706ad4884c6a4fbdba21ffc7956099e75","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"ede10154c0f4bcdd392ce6d6fa3780dedb9f86c4d26f44c0f07c9b5ef1cdcca9"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}