One-step implementation of the Rydberg-Rydberg-interaction gate
One-step implementation of the Rydberg-Rydberg-interaction gate
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里德伯-里德伯相互作用门的一步实现
DOI：
10.1103/physreva.93.012306
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发表时间：
2016-01
影响因子：
2.9
通讯作者：
Zhu Ai-Dong
中科院分区：
文献类型：
--
作者：
Su Shi-Lei;Liang Erjun;Zhang Shou;Wen Jing-Ji;Sun Li-Li;Jin Zhao;Zhu Ai-Dong
我们提出了几种方案来实现两个里德伯原子之间的两个量子比特的量子相位门。该方案可以一步实现，而无需绝热通道，绝热通道依赖于激光场的特定形状和定制的脉冲序列。当Rydberg-Rydberg-interaction（RRI）强度和驱动场参数满足一定条件时，双激发Rydberg态和基态之间将产生有效的Rabi振荡，这是Rydberg封锁区之外的振荡，也是我们方案的必要条件.此外，不需要原子的单独寻址。该方案在强RRI强度和弱RRI强度下都能工作。通过数值求解主方程，讨论了RRI强度和自发辐射变化引起的缺陷。
We propose several schemes for implementing a two-qubit quantum phase gate between two Rydberg atoms. The schemes could be realized in one step without adiabatic passage which depends on the specifical shapes and tailored pulse sequences of the laser fields. When the Rydberg-Rydberg-interaction (RRI) strength and the parameters of the driving fields satisfy some certain conditions, the effective Rabi oscillation between the two-excitation Rydberg state and the ground state would be generated, which is out of the Rydberg blockade regime and essential for our scheme. In addition, the individual addressing of the atoms is not required. And the schemes can work under strong or weak RRI strength. The imperfections induced by the variation of RRI strength and spontaneous emission are discussed through solving the master equation numerically.