arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1612.04785quant-phcond-mat.dis-nncond-mat.stat-mechstat.ML
收藏

量子退火中一类特殊非随机哈密顿量的量子蒙特卡罗模拟

Quantum Monte Carlo simulation of a particular class of non-stoquastic Hamiltonians in quantum annealing

Masayuki Ohzeki

摘要:

量子退火是利用虚拟量子涨落的优化问题的通用求解器。在经典计算中,它的模拟通常是通过Suzuki-Trotter分解使用量子蒙特卡罗模拟来进行的。然而,有时会出现负号的问题,在模拟量子退火与一个精心设计的驱动哈密顿量,因为它属于一类非随机哈密顿。在本研究中,我们提出了另一种方法,以避免在一个特定的类的非随机哈密顿所涉及的负号问题。为了检查该方法的有效性,我们证明了我们的方法,通过将其应用到一个简单的问题,其中包括反铁磁XX相互作用,这是一个典型的非随机哈密顿。

英文摘要:

Quantum annealing is a generic solver of the optimization problem that uses fictitious quantum fluctuation. Its simulation in classical computing is often performed using the quantum Monte Carlo simulation via the Suzuki--Trotter decomposition. However, the negative sign problem sometimes emerges in the simulation of quantum annealing with an elaborate driver Hamiltonian, since it belongs to a class of non-stoquastic Hamiltonians. In the present study, we propose an alternative way to avoid the negative sign problem involved in a particular class of the non-stoquastic Hamiltonians. To check the validity of the method, we demonstrate our method by applying it to a simple problem that includes the anti-ferromagnetic XX interaction, which is a typical instance of the non-stoquastic 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。

↑