{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T11:36:06Z","timestamp":1785411366081,"version":"3.56.0"},"reference-count":35,"publisher":"Optica Publishing Group","issue":"7","license":[{"start":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T00:00:00Z","timestamp":1773792000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/doi.org\/10.1364\/OA_License_v2#VOR"},{"start":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T00:00:00Z","timestamp":1773792000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/opg.optica.org\/policies\/opg-tdm-policy.json"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["12474324"],"award-info":[{"award-number":["12474324"]}],"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":["62075050"],"award-info":[{"award-number":["62075050"]}],"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":["11934013"],"award-info":[{"award-number":["11934013"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["opg.optica.org"],"crossmark-restriction":false},"short-container-title":["Opt. Lett."],"published-print":{"date-parts":[[2026,4,1]]},"abstract":"<jats:p>Spin\u2013orbit conversion facilitated by the geometric phase provides a promising flat optics platform for the structuring of light. However, the efficient generation of arbitrary spin\u2013orbit states through passive and non-reconfigurable geometric phase elements remains a significant challenge. In this paper, by exploiting liquid-crystal geometric phase devices, we experimentally demonstrate arbitrary spin\u2013orbit conversions based on spin-switchable SU(2) rotations of tunable Hermite\u2013Gauss modes. Unlike conventional geometric phase devices, which are primarily designed for direct wavefront shaping, this SU(2) approach offers the advantages of unitary conversion and modal independence and, consequently, provides a promising spin\u2013orbit interface with reconfigurable orbital angular momentum bases and lossless conversion.<\/jats:p>","DOI":"10.1364\/ol.581110","type":"journal-article","created":{"date-parts":[[2026,3,6]],"date-time":"2026-03-06T11:00:09Z","timestamp":1772794809000},"page":"1736","update-policy":"https:\/\/doi.org\/10.1364\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Arbitrary spin\u2013orbit conversions enabled by spin-switchable SU(2) rotation using the liquid-crystal geometric phase"],"prefix":"10.1364","volume":"51","author":[{"given":"Tingting","family":"Liu","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04e6y1282","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Yanbian University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaqi","family":"Jiang","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04e6y1282","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Yanbian University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunyu","family":"Li","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04e6y1282","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Yanbian University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0321-0877","authenticated-orcid":true,"given":"Carmelo","family":"Rosales-Guzm\u00e1n","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04e6y1282","id-type":"ROR","asserted-by":"publisher"}]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6203-2628","authenticated-orcid":true,"given":"Zhihan","family":"Zhu","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/04e6y1282","id-type":"ROR","asserted-by":"publisher"}]},{"name":"Yanbian University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"285","published-online":{"date-parts":[[2026,3,18]]},"reference":[{"key":"ol-51-7-1736-R1","doi-asserted-by":"publisher","first-page":"42","DOI":"10.1364\/OPN.35.3.000042","type":"journal-article","volume":"35","author":"Berry","year":"2024","journal-title":"Opt. 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All rights, including for text and data mining (TDM), Artificial Intelligence (AI) training, and similar technologies, are reserved.","name":"copyright","label":"Copyright"}]}}