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arXiv 2009.02600quant-ph
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一类量子2-sat问题的量子算法

Quantum algorithm of a set of quantum 2-sat problem

Yanglin Hu, Zhelun Zhang, Biao Wu

摘要:

对一类量子2-可满足性(Q2 SAT)问题提出了一个量子绝热算法,该问题是2-可满足性(2SAT)问题的推广。对于一个Q2 SAT问题,我们构造了一个类似于海森堡链的哈密顿量。所给Q2 SAT问题的所有解都跨越简并基态的子空间。对哈密顿量进行了几何演化,使系统保持在简并子空间中。我们的数值结果表明,我们的算法的时间复杂度是$O(n^{3.9})$产生非平凡的解决方案的条款数$m=dn(n-1)/2\ (d\lesssim 0.1)$的问题。我们讨论了我们的算法的优点,已知的量子和经典算法。

英文摘要:

We present a quantum adiabatic algorithm for a set of quantum 2-satisfiability (Q2SAT) problem, which is a generalization of 2-satisfiability (2SAT) problem. For a Q2SAT problem, we construct the Hamiltonian which is similar to that of a Heisenberg chain. All the solutions of the given Q2SAT problem span the subspace of the degenerate ground states. The Hamiltonian is adiabatically evolved so that the system stays in the degenerate subspace. Our numerical results suggest that the time complexity of our algorithm is $O(n^{3.9})$ for yielding non-trivial solutions for problems with the number of clauses $m=dn(n-1)/2\ (d\lesssim 0.1)$. We discuss the advantages of our algorithm over the known quantum and classical algorithms.

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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