Under the support of the National Natural Science Foundation of China (Grant Nos.
Quantum information and topological physics are two important branches of disciplines derived from quantum mechanics.
The team fabricated topologically robust Einstein-Podolsky-Rosen entangled states and multiphoton entangled states on the topological boundaries of anomalous Froquet topological insulator devices based on a silicon-based two-dimensional coupled resonant ring configuration, using quantum interference And quantum state tomography technology, to observe and compare topological quantum entanglement light sources without structural defects, topological quantum entanglement light sources with structural defects and ordinary quantum light sources, and experimentally prove that quantum entanglement sources with structural defects still have and Nearly consistent high quantum state fidelity and purity for defect-free devices (Fig.
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