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arXiv 1801.02005quant-phcond-mat.stat-mech
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横向场非均匀驱动下量子退火的指数加速

Exponential Speedup of Quantum Annealing by Inhomogeneous Driving of the Transverse Field

Yuki Susa, Yu Yamashiro, Masayuki Yamamoto, Hidetoshi Nishimori

摘要:

我们表明,对于量子退火,在有和没有纵向随机场的p体相互作用平均场型模型中,某种类型的横向场的非均匀驱动擦除一阶量子相变。由于一阶相变由于指数小的能隙而对量子退火(绝热量子计算)造成严重困难,因此去除一阶相变意味着退火过程的指数加速。本方法可以作为一个简单的协议,量子退火的性能增强,补充非随机哈密顿。

英文摘要:

We show, for quantum annealing, that a certain type of inhomogeneous driving of the transverse field erases first-order quantum phase transitions in the p-body interacting mean-field-type model with and without longitudinal random field. Since a first-order phase transition poses a serious difficulty for quantum annealing (adiabatic quantum computing) due to the exponentially small energy gap, the removal of first-order transitions means an exponential speedup of the annealing process. The present method may serve as a simple protocol for the performance enhancement of quantum annealing, complementary to 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。

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