论文标题
对附近过渡的快速分析通用控制的实验证明
Experimental Demonstration of Swift Analytical Universal Control over Nearby Transitions
论文作者
论文摘要
随着量子系统中尺寸的缩放，系统能量水平之间的过渡将在频率上近距离，这些频率通常通过弱且较长的脉冲解决。在这里，我们在四级捕获的离子系统上扩展和实验证明了基于分析的迅速量子控制技术，在该系统上，我们对两对频谱过渡的两对进行了个人或同时控制，并具有量身定制的时间变化驱动器，实现了99.2（3）\％至99.6（3）（3）（3）（3）\％\％。值得注意的是，我们达到了大约达到的数量级速度，与一般控制的弱方脉冲相比。因此，我们的演示可能对具有拥挤的光谱，光谱，量子信息处理和量子模拟的广泛量子系统有益。
Along with the scaling of dimensions in quantum systems, transitions between the system's energy levels would become close in frequency, which are conventionally resolved by weak and lengthy pulses. Here, we extend and experimentally demonstrate analytically based swift quantum control techniques on a four-level trapped ion system, where we perform individual or simultaneous control over two pairs of spectrally nearby transitions with tailored time-varied drive, achieving operational fidelities ranging from 99.2(3)\% to 99.6(3)\%. Remarkably, we achieve approximately an order of magnitude speed up comparing with the case of weak square pulse for a general control. Therefore, our demonstration may be beneficial to a broad range of quantum systems with crowded spectrum, for spectroscopy, quantum information processing and quantum simulation.
