arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.05117quant-ph
收藏

一个乔丹-维格纳小工具,将量子化学应用中的T计数减少了6倍以上

A Jordan-Wigner gadget that reduces T count by more than 6x for quantum chemistry applications

Sam Pallister

摘要:

量子计算机有可能成为一种深刻的变革性技术,特别是在量子化学的背景下。然而,运行一个化学应用程序,这是证明有用的,目前需要一个禁止数量的逻辑运算。例如,模拟生物固氮中的关键成分FeMoco分子所需的操作数量的规范估计需要大约$10^{15}$逻辑门。一台能够以1 MHz速率进行逻辑运算的量子计算机需要30多年的时间才能完成这样的计算。如果这项技术要具有商业实用性,那么通过更好地理解和优化量子算法来减少这种令人望而却步的运行时间是势在必行的。本文的目的是介绍这样的优化。我们在下面介绍的小工具为采用乔丹-维格纳变换的Trotterized量子化学提供了6倍的运行时间改进,而无需改变所需的量子位数。

英文摘要:

Quantum computers have the potential to be a profoundly transformative technology, particularly in the context of quantum chemistry. However, running a chemistry application that is demonstrably useful currently requires a prohibitive number of logical operations. For example, the canonical estimate of the number of operations required to simulate the molecule FeMoco, the key component in biological nitrogen fixation, requires around $10^{15}$ logical gates. A quantum computer that is capable of applying logical operations at 1 Mhz rates would require more than 30 years to complete such a calculation. It is imperative to reduce this prohibitive runtime, by better understanding and optimising quantum algorithms, if the technology is to have commercial utility. The purpose of this paper is to introduce such an optimisation. The gadget that we introduce below affords a 6x improvement in runtime for Trotterized quantum chemistry employing the Jordan-Wigner transformation, without altering the required number of qubits.

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。

↑