인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Exploring new topological phases and phenomena is essential in the modern physics. Although non-Abelian topology with braided nodes in multiple bandgaps systems has been extensively explored, new non-Abelian phase transitions with nodal line degeneracy still merit further theoretical classifications and experimental validations. Here, photonic chains with coupled p-orbital modes are investigated where two types of non-Abelian phase transitions are revealed. The first type is the braided-node type, signified by the Dirac degeneracy node moving into or out of the unit circle. The second type corresponds to the sudden emerging of nodal line degeneracy which intersects with the unit circles. Hidden duality symmetry is unveiled in the rotation parameter space, in which two dual-systems with identical Abelian topological invariants (specifically, Zak phase and Winding number) can be in distinct non-Abelian topological phases, separated by the nodal-line type phase transition. Rich non-Abelian topological phases can be described by generalized quaternion group Q<sub>16</sub>. Robust topological edge states are theoretically predicted by non-Abelian bulk-boundary correspondence and further experimentally demonstrated. This work expands new mechanism of non-Abelian phase transition, paving the way to explore more topological phenomena and topological devices in various wave platforms.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.