activity
20242026
collaborators

5 papers

quant-ph2026

A Unified Frequency Principle for Quantum and Classical Machine Learning

Rundi Lu, Ruiqi Zhang, Weikang Li +3

Quantum neural networks constitute a key class of near-term quantum learning models, yet their training dynamics remain not fully understood. Here, we present a unified theoretical…

quant-ph2025

Taming Barren Plateaus in Arbitrary Parameterized Quantum Circuits without Sacrificing Expressibility

Zhenyu Chen, Yuguo Shao, Zhengwei Liu +1

Quantum algorithms based on parameterized quantum circuits (PQCs) have enabled a wide range of applications on near-term quantum devices. However, existing PQC architectures face s…

quant-ph2025

BELT: Block Encoding of Linear Transformation on Density Matrices

Fuchuan Wei, Rundi Lu, Yuguo Shao +3

Linear maps that are not completely positive play a crucial role in the study of quantum information, yet their non-completely positive nature renders them challenging to realize p…

quant-ph2025

Infinite-dimensional Extension of the Linear Combination of Hamiltonian Simulation: Theorems and Applications

Rundi Lu, Hao-En Li, Zhengwei Liu +1

We generalize the Linear Combination of Hamiltonian Simulation (LCHS) formula [An, Liu, Lin, Phys. Rev. Lett. 2023] to simulate time-evolution operators in infinite-dimensional spa…

quant-ph2024

Clifford Perturbation Approximation for Quantum Error Mitigation

Ruiqi Zhang, Yuguo Shao, Fuchuan Wei +3

Quantum error mitigation (QEM) is critical for harnessing the potential of near-term quantum devices. Particularly, QEM protocols can be designed based on machine learning, where t…