First direct measurement of non-Abelian quantum geometric tensor, Euler curvature, and quaternion charges in a multi-gap photonic lattice via orbital-resolved polarimetry.
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Non-Hermitian Berry phases in time-varying media have a quantized real part due to symmetry, giving a topological index for systems including a non-Hermitian Su-Schrieffer-Heeger model.
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Measuring non-Abelian quantum geometry and topology in a multi-gap photonic lattice
First direct measurement of non-Abelian quantum geometric tensor, Euler curvature, and quaternion charges in a multi-gap photonic lattice via orbital-resolved polarimetry.
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Partial Quantisation of Non-Hermitian Berry Phases in Time-Varying Media
Non-Hermitian Berry phases in time-varying media have a quantized real part due to symmetry, giving a topological index for systems including a non-Hermitian Su-Schrieffer-Heeger model.