论文标题
基于非常规的Rydberg抽水的Toffoli Gate的一步实施中性原子
One-step implementation of Toffoli gate for neutral atoms based on unconventional Rydberg pumping
论文作者
论文摘要
与通用量子计算的想法相比，多Quipit逻辑门的直接合成可以大大提高量子信息处理任务的效率。在这里，我们提出了一个有效的方案，以基于非常规Rydberg泵送的中性原子实施中性原子的三分之一控制的门（Toffoli）门。通过调节驾驶场的狂犬病频率的强度，可以在一步之内实现Toffoli门，这也对Rydberg-Rydberg相互作用的波动不敏感。考虑到不同的原子比对，我们可以在同一操作时间$ \ sim 7〜μs $的同一操作时间获得高保真的Toffoli门。此外，我们的方案可以进一步扩展到四个Qubit的情况，而无需更改操作时间。
Compared with the idea of universal quantum computation, a direct synthesis of a multiqubit logic gate can greatly improve the efficiency of quantum information processing tasks. Here we propose an efficient scheme to implement a three-qubit controlled-not (Toffoli) gate of neutral atoms based on unconventional Rydberg pumping. By adjusting the strengths of Rabi frequencies of driving fields, the Toffoli gate can be achieved within one step, which is also insensitive to the fluctuation of the Rydberg-Rydberg interaction. Considering different atom alignments, we can obtain a high-fidelity Toffoli gate at the same operation time $\sim 7~μs$. In addition, our scheme can be further extended to the four-qubit case without altering the operating time.
