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arXiv 2106.04864quant-ph
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触发哈密顿量子退火:应用于2- SAT和非随机问题

Quantum Annealing with Trigger Hamiltonians: Application to 2-SAT and Nonstoquastic Problems

Vrinda Mehta, Fengping Jin, Hans De Raedt, Kristel Michielsen

摘要:

我们研究了两组问题的量子退火的性能,即2-SAT问题的伊辛型哈密顿,和非随机问题,这是通过增加额外的耦合到2-SAT问题的哈密顿。此外,我们添加到用于量子退火的横向伊辛型哈密顿量的第三项,铁磁或反铁磁耦合,在退火过程的开始和结束时消失的触发哈密顿量。我们还分析了一些问题的情况下,使用的能量谱,平均能量或重叠的状态在演化过程中的瞬时低本征态的哈密顿量,并确定了一些非绝热机制,可以提高量子退火的性能。

英文摘要:

We study the performance of quantum annealing for two sets of problems, namely, 2-satisfiability (2-SAT) problems represented by Ising-type Hamiltonians, and nonstoquastic problems which are obtained by adding extra couplings to the 2-SAT problem Hamiltonians. In addition, we add to the transverse Ising-type Hamiltonian used for quantum annealing a third term, the trigger Hamiltonian with ferromagnetic or antiferromagnetic couplings, which vanishes at the beginning and end of the annealing process. We also analyze some problem instances using the energy spectrum, average energy or overlap of the state during the evolution with the instantaneous low lying eigenstates of the Hamiltonian, and identify some non-adiabatic mechanisms which can enhance the performance of quantum annealing.

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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