Author

Zhen-Yu Du

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Preprint Sep 2026

Low-Depth Random Unitaries without Ancillae

Random unitaries are fundamental to quantum information and many-body physics, with widespread applications ranging from quantum learning and metrology to device benchmarking. A central pursuit is to minimize the space and circuit depth required to generate them. However, existing methods for generating low-depth rando...

Zhen-Yu Du, Si-Yuan Cheng, Xiong-Feng Ma · 2 citations

Open access Sep 2026

Quantum neural network equipped with backpropagation on a qudit processor

An experimental demonstration of qudit-based QNN using a trapped $\rm ^{40}Ca^+$ ion is reported, which highlights the potential of qudits to QNN architectures and provides a framework for implementing qudit-based QNNs across various quantum devices.

Yi-Bo Yuan, Zhuo-Yue Xu, Zhen-Yu Du et al. · National Science Review · 0 citations

Preprint Jul 2026

Quantum-classical crossover in fault-tolerant quantum dynamics simulation

A scalable fault-tolerant framework that combines coherent observable estimation with a space-time-efficient implementation of non-Clifford rotations is introduced, suppressing the residual logical errors that limit existing partially fault-tolerant approaches.

Jinzhao Sun, Bozhen Zhou, Jue Xu et al. · 4 citations