论文标题
使用局部四体相互作用的Kerr-Nonlinalear参数振荡器的高准确性ISING机器
High-accuracy Ising machine using Kerr-nonlinear parametric oscillators with local four-body interactions
论文作者
论文摘要
基于Lechner-Hauke-Zoller（LHZ）方案中的绝热量子计算，具有局部四体相互作用的Kerr-Nonlinear参数参数振荡器（KPO）是实现具有全能自旋耦合的Ising机器的有前途的候选人。但是，它的性能仅用于几个KPO。通过数值模拟更多的KPO，我们在这里表明，可以通过减少四体相互作用引起的光子数量的不均匀性来显着提高性能。可以通过根据其位置调整kPo的解剖来纠正光子数的差异，而无需在绝热时间演变中监测其状态。该校正可以独立于LHz方案中的KPO数量使用，因此可以应用于大规模实施。
A two-dimensional array of Kerr-nonlinear parametric oscillators (KPOs) with local four-body interactions is a promising candidate for realizing an Ising machine with all-to-all spin couplings, based on adiabatic quantum computation in the Lechner-Hauke-Zoller (LHZ) scheme. However its performance has been evaluated for only a few KPOs. By numerically simulating more KPOs, here we show that the performance can be dramatically improved by reducing inhomogeneity in photon numbers induced by the four-body interactions. The discrepancies of the photon numbers can be corrected by tuning the detunings of KPOs depending on their positions, without monitoring their states during adiabatic time evolution. This correction can be used independent of the number of KPOs in the LHZ scheme and thus can be applied to large-scale implementation.
