Fast transport of mixed-species ion chains within a Paul trap
Fast transport of mixed-species ion chains within a Paul trap
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DOI：
10.1103/physreva.90.053408
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发表时间：
2014-06
影响因子：
2.9
通讯作者：
M. Palmero;R. Bowler;J. Gaebler;D. Leibfried;J. G. Muga;J. G. Muga
中科院分区：
文献类型：
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作者：
M. Palmero;R. Bowler;J. Gaebler;D. Leibfried;J. G. Muga;J. G. Muga
我们研究了非绝热状态下线性Paul阱中混合种离子晶体在空间不同位置之间传输的动力学。在一般的混合物种晶体中，沿着传输方向的所有自由度沿着都被加速阱激发，因此与仅激发质心模式的同种离子的情况不同，必须通过传输协议同时控制多个自由度。我们设计的协议，导致低的最终激发在非绝热制度使用不变量为基础的逆向工程两个不同种类的离子，也展示了如何将这种方法扩展到更长的混合物种离子串。混合种类离子串的快速传输可以显著减少某些架构中的操作时间，用于具有捕获离子的可扩展量子信息处理。
We investigate the dynamics of mixed-species ion crystals during transport between spatially distinct locations in a linear Paul trap in the diabatic regime. In a general mixed-species crystal, all degrees of freedom along the direction of transport are excited by an accelerating well, so unlike the case of same-species ions, where only the center-of-mass mode is excited, several degrees of freedom have to be simultaneously controlled by the transport protocol. We design protocols that lead to low final excitations in the diabatic regime using invariant-based inverse engineering for two different-species ions and also show how to extend this approach to longer mixed-species ion strings. Fast transport of mixed-species ion strings can significantly reduce the operation time in certain architectures for scalable quantum-information processing with trapped ions.