Sparse-Hamiltonian approach to the time-evolution of molecules on quantum computers
Sparse-Hamiltonian approach to the time-evolution of molecules on quantum computers
复制标题
量子计算机上分子时间演化的稀疏哈密顿方法
DOI:
10.1140/epjs/s11734-021-00098-w
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Freericks, James K.
中科院分区:
文献类型:
--
作者:
Daniel, Christina;Dhawan, Diksha;Zgid, Dominika;Freericks, James K.
Quantum chemistry has been viewed as one of the potential early applications of quantum computing. Two techniques have been proposed for electronic structure calculations: (1) the variational quantum eigensolver and (2) the phase-estimation algorithm. In both cases, the complexity of the problem increases for basis sets where either the Hamiltonian is not sparse, or it is sparse, but many orbitals are required to accurately describe the molecule of interest. In this work, we explore the possibility of mapping the molecular problem onto a sparse Hubbard-like Hamiltonian, which allows a Green’s-function-based approach to electronic structure via a hybrid quantum-classical algorithm. We illustrate the time-evolution aspect of this methodology with a simple four-site hydrogen ring.
影响因子:
1.9
作者:
Xu, Luogen;Lee, J. T.;Freericks, J. K.
通讯作者:
Freericks, J. K.
DOI:
10.1063/1.4901432
发表时间:
2014
期刊:
The Journal of chemical physics
影响因子:
--
作者:
A. Rusakov;J. Phillips;D. Zgid
通讯作者:
D. Zgid