论文标题
非绝热全能单量子量子门\\具有最佳对照的实验性实现
Experimental Realization of Nonadiabatic Holonomic Single-Qubit Quantum Gates\\ with Optimal Control in a Trapped Ion
论文作者
论文摘要
通过几何阶段诱导的量子门计算,由于其稳健性针对操作噪声,因此被认为是容错量子计算中的一种有希望的策略。但是,由于对先前方案的参数限制,涂抹了全能量子门的主要鲁棒优势。在这里,我们在实验上证明了解决方案方案,该方案证明了基于具有共振驱动器的三个级别的YB离子中具有最佳控制的非绝热单量子量子门,这也具有快速进化和方便实现的优势。与相应的先前几何门和常规动态门相比,我们方案的优越性是,它在对照振幅误差方面具有更强的稳健性,这通过量子过程层析成像和随机基准测试方法得到了测得的门不忠实。此外,我们还概述了在当前的实验技术中也可以实现非平凡的两个量子自全能门。因此,我们的实验验证了这种强大而快速的全体量子计算策略的可行性。
Quantum computation with quantum gates induced by geometric phases is regarded as a promising strategy in fault tolerant quantum computation, due to its robustness against operational noises. However, because of the parametric restriction of previous schemes, the main robust advantage of holonomic quantum gates is smeared. Here, we experimentally demonstrate a solution scheme, demonstrating nonadiabatic holonomic single qubit quantum gates with optimal control in a trapped Yb ion based on three level systems with resonant drives, which also hold the advantages of fast evolution and convenient implementation. Compared with corresponding previous geometric gates and conventional dynamic gates, the superiority of our scheme is that it is more robust against control amplitude errors, which is confirmed by the measured gate infidelity through both quantum process tomography and random benchmarking methods. In addition, we also outline that nontrivial two qubit holonomic gates can also be realized within current experimental technologies. Therefore, our experiment validates the feasibility for this robust and fast holonomic quantum computation strategy.