{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T12:56:23Z","timestamp":1781268983417,"version":"3.54.1"},"reference-count":43,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T00:00:00Z","timestamp":1779840000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T00:00:00Z","timestamp":1779840000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12204061"],"award-info":[{"award-number":["12204061"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12174037"],"award-info":[{"award-number":["12174037"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Nanophotonics"],"published-print":{"date-parts":[[2026,6,13]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Bound states in the continuum (BICs) with infinite\n                    <jats:italic>Q<\/jats:italic>\n                    factors and topological polarization charges have emerged as a pivotal platform in quantum information. The Janus BICs carrying asymmetric topological charges exhibit great potential for nonreciprocal photonics devices. Here, the topological properties of the Janus BICs are preserved while decoupled chirality is induced, which enhances the system's advantages by providing an extra degree of freedom. In contrast to previous Janus BICs, where chirality is coupled to topological charges, we achieve decoupled control through time\u2010reversal symmetry breaking. The theory of modified nonreciprocal temporal coupled mode theory (TCMT) with perturbation is developed to describe our system, which consists of the bi\u2010layer photonic crystals (PhCs) with  symmetry and magneto\u2010optical (MO)  symmetry slabs. When time\u2010reversal symmetry is broken, the degenerate BICs in the MO slab split into opposite chiral modes, whose chiralities are controllable through the direction and strength of the external magnetic field. By combining the simulation method, we observe the independent modulation of topological charges and chiralities in the polarization of the far field and evolution of C points with the change of separation. Our findings open pathways for applications in chirality\u2010dependent devices and asymmetric light\u2013matter interaction.\n                  <\/jats:p>","DOI":"10.1002\/nap2.70134","type":"journal-article","created":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T09:53:04Z","timestamp":1779875584000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Magnetically Decoupled Janus Bound States in the Continuum for Chirality\u2013Topology Control"],"prefix":"10.1002","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-7816-5204","authenticated-orcid":false,"given":"Yadong","family":"Yue","sequence":"first","affiliation":[{"name":"State Key Laboratory of Information Photonics and Optical Communications School of Physical Science and Technology Beijing University of Posts and Telecommunications  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Du","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Information Photonics and Optical Communications School of Physical Science and Technology Beijing University of Posts and Telecommunications  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kun","family":"Liang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Information Photonics and Optical Communications School of Physical Science and Technology Beijing University of Posts and Telecommunications  Beijing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Li","family":"Yu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Information Photonics and Optical Communications School of Physical Science and Technology Beijing University of Posts and Telecommunications  Beijing 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