arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1801.08652quant-phcs.DS
收藏

减少二进制二次型以实现更可扩展的量子退火

Reducing Binary Quadratic Forms for More Scalable Quantum Annealing

Georg Hahn, Hristo N. Djidjev

摘要:

商业量子退火机(如D-Wave 2X)的最新进展允许解决NP-难优化问题,这些问题可以表示为二次无约束二进制规划。然而,相对较少的可用量子位数(D-Wave 2X量子退火机约为1000个)对可以解决的问题范围构成了严重限制。本文探讨了预处理方法的适用性,以减少输入程序的大小,从而减少在量子计算机上求解所需的量子位数。这种方法允许我们确定某些变量的值,这些变量在任何最优解(称为强持久性)或至少一个最优解(弱持久性)中保持不变。我们研究了两个重要的NP-难图问题的预处理方法,图中最大团和最大割的计算。我们发现,这两个优化问题的强持久性和弱持久性的识别是非常具体的实例,但可以导致变量的数量大幅减少。

英文摘要:

Recent advances in the development of commercial quantum annealers such as the D-Wave 2X allow solving NP-hard optimization problems that can be expressed as quadratic unconstrained binary programs. However, the relatively small number of available qubits (around 1000 for the D-Wave 2X quantum annealer) poses a severe limitation to the range of problems that can be solved. This paper explores the suitability of preprocessing methods for reducing the sizes of the input programs and thereby the number of qubits required for their solution on quantum computers. Such methods allow us to determine the value of certain variables that hold in either any optimal solution (called strong persistencies) or in at least one optimal solution (weak persistencies). We investigate preprocessing methods for two important NP-hard graph problems, the computation of a maximum clique and a maximum cut in a graph. We show that the identification of strong and weak persistencies for those two optimization problems is very instance-specific, but can lead to substantial reductions in the number of variables.

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。

↑