94 citations · 153 across the 7 of their papers we have counts for
7 papers
Can phaseless auxiliary-field quantum Monte Carlo with broken symmetry trials describe iron-sulfur clusters?
Eirik F. Kjønstad, Huanchen Zhai, James Shee +2
Phaseless auxiliary-field quantum Monte Carlo (AFQMC) has in several cases been found to perform well on strongly correlated systems. Here, we benchmark the method for three iron-s…
Coupled-Cluster Imaginary-Time Evolution and the Coupled-Cluster Energy Variance
Yuhang Ai, Huanchen Zhai, Garnet Kin-Lic Chan
We discuss a coupled-cluster formalism for carrying out imaginary-time evolution from an arbitrary reference, and study the properties of the resulting evolution trajectories. The…
Quantum Many-Body Linear Algebra, Hamiltonian Moments, and a Coupled Cluster Inspired Framework
Yuhang Ai, Huanchen Zhai, Johannes Tölle +1
We propose a general strategy to develop quantum many-body approximations of primitives in linear algebra algorithms. As a practical example, we introduce a coupled-cluster inspire…
Rapid initial state preparation for the quantum simulation of strongly correlated molecules
Dominic W. Berry, Yu Tong, Tanuj Khattar +8
Studies on quantum algorithms for ground state energy estimation often assume perfect ground state preparation; however, in reality the initial state will have imperfect overlap wi…
Fast emulation of fermionic circuits with matrix product states
Justin Provazza, Klaas Gunst, Huanchen Zhai +4
We describe a matrix product state (MPS) extension for the Fermionic Quantum Emulator (FQE) software library. We discuss the theory behind symmetry adapted matrix product states fo…
The chromium dimer: closing a chapter of quantum chemistry
Henrik R. Larsson, Huanchen Zhai, C. J. Umrigar +1
The complex electronic structure and unusual potential energy curve of the chromium dimer have fascinated scientists for decades, with agreement between theory and experiment so fa…
Holographic simulation of correlated electrons on a trapped ion quantum processor
Daoheng Niu, Reza Haghshenas, Yuxuan Zhang +3
We develop holographic quantum simulation techniques to prepare correlated electronic ground states in quantum matrix product state (qMPS) form, using far fewer qubits than the num…