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Experimental unsupervised learning of non-Hermitian knotted phases with solid-state spins

Non-Hermiticity has widespread applications in quantum physics. It brings about distinct topological phases without Hermitian counterparts, and gives rise to the fundamental challenge of phase classification. ...

Yefei Yu, Li-Wei Yu, Wengang Zhang, Huili Zhang, **aolong Ouyang… in npj Quantum Information (2022)