11 papers
A Calibrated Test of Internal Action Maps: State Signals Without Global Affine Closure
Dekun Yang
A hidden state signal can be decodable or causally usable without supporting a reusable action map. We test whether action maps fitted without a source reach its natural post-actio…
Local Universality and Structural Certificates for Minimal Fixed-Depth Two-Qutrit Gate Decomposition
Yurui Liu, Ruoting Dou, Peng Xu +4
We study a dimension-saturating fixed-core ansatz in which four copies of a fixed, non-tunable two-qutrit core are interleaved with five adjustable local layers from $…
Efficient Implementation of a Single-Qutrit Gate Set via Coherent Control
Xiang-Min Yu, Xiang Deng, Wen Zheng +15
Qutrits offer the potential for enhanced quantum computation by exploiting an enlarged Hilbert space. However, the synthesis of high-fidelity and fast qutrit gates, particularly fo…
Probing Tensor Singularities and Their Euler-Class Descendants via Non-Abelian Quantum Geometry Measurement
Zhe Wang, Yan-Qing Zhu, Xinsheng Tan +5
We report the theoretical prediction and experimental observation of a new class of four-dimensional (4D) tensor singularities and their three-dimensional (3D) Euler-class descenda…
Breaking the scalability barrier via a vertical tunable coupler in 3D integrated transmon system
Xudong Liao, Shuyi Pan, Zhenxing Zhang +11
Scaling superconducting quantum processors beyond the constraints of monolithic planar architectures is essential for fault-tolerant quantum computation. Here we demonstrate a thre…
Information-Scrambling-Enhanced Quantum Sensing Beyond the Standard Quantum Limit
Yangyang Ge, Haoyu Zhou, Wen Zheng +16
Quantum sensing promises measurement precision beyond classical limits, but its practical realization is often hindered by decoherence and the challenges of generating and stabiliz…