Universal, high-fidelity quantum gates based on superadiabatic, geometric phases on a solid-state spin-qubit at room temperature
Universal, high-fidelity quantum gates based on superadiabatic, geometric phases on a solid-state spin-qubit at room temperature
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DOI：
10.1038/s41534-018-0098-7
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发表时间：
2018-04
影响因子：
7.6
通讯作者：
Felix Kleißler;A. Lazariev;Silvia Arroyo-Camejo
中科院分区：
文献类型：
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作者：
Felix Kleißler;A. Lazariev;Silvia Arroyo-Camejo
几何相位和完整体由于其固有的对参数噪声的容错性，是在噪声器件中实现高保真量子运算的一个很有前途的资源。然而，长期以来，它们在量子计算中的实际应用仅限于原理证明演示。这部分是由于需要绝热时间演化或需要复杂的高维状态空间和大量驱动场参数来实现使用完整的通用量子门。2016年，Liang等人提出了利用无瞬态量子驱动的通用、超绝热、几何量子门，从而在简单的两级系统上提供了快速、通用的量子门性能。本文报道了一组非交换单量子位超绝热几何量子门在环境条件下对金刚石中氮空位中心的电子自旋的实验实现。这为在现实的、嘈杂的实验条件下进行大规模量子计算提供了一个有前途的、强大的工具。
Geometric phases and holonomies are a promising resource for the realization of high-fidelity quantum operations in noisy devices, due to their intrinsic fault-tolerance against parametric noise. However, for a long time their practical use in quantum computing was limited to proof of principle demonstrations. This was partly due to the need for adiabatic time evolution or the requirement of complex, high-dimensional state spaces and a large number of driving field parameters to achieve universal quantum gates employing holonomies. In 2016 Liang et al. proposed universal, superadiabatic, geometric quantum gates exploiting transitionless quantum driving, thereby offering fast and universal quantum gate performance on a simple two-level system. Here, we report on the experimental implementation of a set of non-commuting single-qubit superadiabatic, geometric quantum gates on the electron spin of the nitrogen-vacancy center in diamond under ambient conditions. This provides a promising and powerful tool for large-scale quantum computing under realistic, noisy experimental conditions.