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quant-ph2026

Universal entanglement detection with geometrically optimal witnesses

Xuanran Zhu, Keyi Huang, Chao Zhang +3

Constructing optimal entanglement witnesses for arbitrary quantum systems remains a formidable challenge, hindered by the structural complexity of high-dimensional quantum state sp…

quant-ph2026

No Cloning of Quantum Ensembles

Zhenyu Du, Siyuan Cheng, Qi Zhao +2

Modern quantum physics now enables control of quantum systems at the level of individual trajectories, opening a new frontier that links quantum information theory, quantum many-bo…

quant-ph2026

Taming Trotter Errors with Quantum Resources

Xiangran Zhang, Jue Xu, Qi Zhao +1

Quantum simulation is a cornerstone application of quantum computing, yet how fundamental quantum resources--entanglement and non-stabilizerness (``magic")--shape simulation fideli…

quant-ph2026★ 11 cited

A building block of quantum repeaters for scalable quantum networks

Wen-Zhao Liu, Ya-Bin Zhou, Jiu-Peng Chen +26

Quantum networks, integrating quantum communication, quantum metrology, and distributed quantum computing, could provide secure and efficient information transfer, high-resolution…

quant-ph2026

Extensible universal photonic quantum computing with nonlinearity

Shang Yu, Jinzhao Sun, Kuan-Cheng Chen +17

Universal quantum computing requires an architecture that supports both linear circuits and, crucially, strong nonlinear resources. For quantum photonic systems, integrating such n…

quant-ph2025★ 2 cited

Discrete time crystals enabled by Floquet strong Hilbert space fragmentation

Ling-Zhi Tang, Xiao Li, Z. D. Wang +1

Discrete time crystals (DTCs) are non-equilibrium phases of matter that break the discrete time-translation symmetry and is characterized by a robust subharmonic response in period…