论文标题
数字化绝热量子计算中绝热性的快捷方式
Shortcuts to Adiabaticity in Digitized Adiabatic Quantum Computing
论文作者
论文摘要
绝热性的快捷方式是控制绝热标准以外的量子动力学的知名方法，其中反脱糖（CD）驾驶提供了一种有希望的方法来加快量子多体系统的速度。在这项工作中，我们显示了CD驾驶以在忠诚度和总仿真时间方面增强数字化绝热量子计算范式的适用性。我们使用标准CD驱动器的数字化版本及其变体从变化方法中研究了Ising自旋链的状态演变。我们使用非常浅的量子电路将这种技术应用于贝尔和格林伯格 - 霍恩林格州的制备状态。我们在IBM量子计算机中实施了此建议，证明了其对嘈杂的中间量子量子设备中绝热量子计算的速度的有用性。
Shortcuts to adiabaticity are well-known methods for controlling the quantum dynamics beyond the adiabatic criteria, where counter-diabatic (CD) driving provides a promising means to speed up quantum many-body systems. In this work, we show the applicability of CD driving to enhance the digitized adiabatic quantum computing paradigm in terms of fidelity and total simulation time. We study the state evolution of an Ising spin chain using the digitized version of the standard CD driving and its variants derived from the variational approach. We apply this technique in the preparation of Bell and Greenberger-Horne-Zeilinger states with high fidelity using a very shallow quantum circuit. We implement this proposal in the IBM quantum computer, proving its usefulness for the speed up of adiabatic quantum computing in noisy intermediate-scale quantum devices.
