Trapped ion quantum computation with transverse phonon modes.
Trapped ion quantum computation with transverse phonon modes.
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DOI：
10.1103/physrevlett.97.050505
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发表时间：
2006-01
影响因子：
8.6
通讯作者：
中科院分区：
文献类型：
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作者：
我们提出了一种方案，利用横向声子模式介导的相互作用，在浸入大型线性晶体中的任何一对捕获离子上实现量子门。与基于纵向声子模式的传统方法相比，由于横向上更强的限制，该方案对兰姆-迪克极限之外的离子加热和热运动不太敏感。这种增益的成本只是适度增加激光功率以达到相同的门速度。我们还展示了如何基于激光脉冲的简单整形来实现具有横向声子模式的任意速度量子门。
We propose a scheme to implement quantum gates on any pair of trapped ions immersed in a large linear crystal, using interaction mediated by the transverse phonon modes. Compared with the conventional approaches based on the longitudinal phonon modes, this scheme is much less sensitive to ion heating and thermal motion outside of the Lamb-Dicke limit thanks to the stronger confinement in the transverse direction. The cost for such a gain is only a moderate increase of the laser power to achieve the same gate speed. We also show how to realize arbitrary-speed quantum gates with transverse phonon modes based on simple shaping of the laser pulses.