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arXiv 1908.05238quant-ph
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一种确定量子计算激发态的方法

A Method of Determining Excited-States for Quantum Computation

P. Jouzdani, S. Bringuier, M. Kostuk

AI总结:

本文提出通过投影掉基态子空间构造有效哈密顿量,使其基态对应原问题激发态,从而用现有基态变分算法计算低激发态能量,并在H2分子上验证有效。

摘要:

本文提出一种方法,将基态子空间从哈密顿量表示中投影出去。通过该投影,构造出一个有效哈密顿量,其基态与原问题的激发态重合。因此,可以利用现有的混合量子-经典技术以及用于确定基态的变分算法来计算低激发态能量。该方法在H2分子上被证明完全有效。此外,还从哈密顿量的类别角度讨论了该方法成功的条件。

英文摘要:

A method is presented in which the ground-state subspace is projected out of a Hamiltonian representation. As a result of this projection, an effective Hamiltonian is constructed where its ground-state coincides with an excited-state of the original problem. Thus, low-lying excited-state energies can be calculated using existing hybrid-quantum classical techniques and variational algorithm(s) for determining ground-state. The method is shown to be fully valid for the H2 molecule. In addition, conditions for the method's success are discussed in terms of classes of Hamiltonians.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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