6 papers
Enhanced Neural Quantum State via Annealed Gradient Descent
Shiwei Zhou, Yiming Huang, Xiao Yuan +1
Neural quantum states offer expressive representations of quantum many-body wave functions, yet their practical accuracy can be limited by stochastic optimization rather than repre…
Universal Analog Quantum Simulation
Yiming Huang, Jiaxing Song, Xiaoxia Cai +1
Analog quantum simulators emulate complex many-body dynamics through native continuous-time evolution under hardware-defined interactions. Yet once a platform is specified, its int…
Perturbative Variational Quantum Eigensolver via Reduced Density Matrices
Yuhan Zheng, Yibin Guo, Huili Zhang +5
Current noisy intermediate-scale quantum (NISQ) devices remain limited in their ability to perform accurate quantum chemistry simulations due to restricted numbers of high-fidelity…
A unified framework for efficient quantum simulation of nonlinear spectroscopy
Long Xiong, Xiaoyang Wang, Xiaoxia Cai +1
Nonlinear spectroscopy is a cornerstone of quantum science, providing unique access to multi-point correlations, quantum coherence, and couplings that are invisible to linear metho…
False Positives Raised by Quantum Readout Error Mitigation
Yibin Guo, Yi Fan, Pei Liu +7
Quantum readout error mitigation is essential for noisy intermediate-scale quantum devices to achieve reliable data. The conventional approaches, conflating initialization errors w…
Cosmic-ray-induced correlated errors in superconducting qubit array
Xuegang Li, Junhua Wang, Yao-Yao Jiang +15
Correlated errors may devastate quantum error corrections that are necessary for the realization of fault-tolerant quantum computation. Recent experiments with superconducting qubi…