33 citations · 42 across the 7 of their papers we have counts for
7 papers
Dominant Eigenstate Isolation through Symmetry-Orbit Decoupling
Canyu He, Chunhua Zeng, Ruyu Yang +1
We address the problem of extracting a target eigenstate from an approximate pure state. Our approach, symmetry-orbit decoupling, exploits symmetries that preserve the target state…
Classical post-processing approach for quantum amplitude estimation
Yongdan Yang, Ruyu Yang
We propose an approach for quantum amplitude estimation (QAE) designed to enhance computational efficiency while minimizing the reliance on quantum resources. Our method leverages…
Quantum-enhanced Green's function Monte Carlo for excited states of nuclear shell model
Yongdan Yang, Ruyu Yang, Xiaosi Xu
We present a hybrid quantum-classical Green's function Monte Carlo (GFMC) algorithm for estimating the excited states of the nuclear shell model. The conventional GFMC method, wide…
A resource-efficient quantum-classical hybrid algorithm for energy gap evaluation
Yongdan Yang, Ying Li, Xiaosi Xu +1
Estimating the eigenvalue or energy gap of a Hamiltonian H is vital for studying quantum many-body systems. Particularly, many of the problems in quantum chemistry, condensed matte…
Quantum algorithms for optimal effective theory of many-body systems
Yongdan Yang, Zongkang Zhang, Xiaosi Xu +2
A common situation in quantum many-body physics is that the underlying theories are known but too complicated to solve efficiently. In such cases one usually builds simpler effecti…
Quantum algorithms for Schrieffer-Wolff transformation
Zongkang Zhang, Yongdan Yang, Xiaosi Xu +1
The Schrieffer-Wolff transformation aims to solve degenerate perturbation problems and give an effective Hamiltonian that describes the low-energy dynamics of the exact Hamiltonian…
Accelerated quantum Monte Carlo with mitigated error on noisy quantum computer
Yongdan Yang, Bing-Nan Lu, Ying Li
Quantum Monte Carlo and quantum simulation are both important tools for understanding quantum many-body systems. As a classical algorithm, quantum Monte Carlo suffers from the sign…