Experimental demonstration of composite adiabatic passage
Experimental demonstration of composite adiabatic passage
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DOI：
10.1103/physreva.88.063406
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发表时间：
2013-12-10
影响因子：
2.9
通讯作者：
Vitanov, Nikolay V.
中科院分区：
文献类型：
--
作者：
Schraft, Daniel;Halfmann, Thomas;Vitanov, Nikolay V.
我们报告了一个实验演示的复合绝热通道（CAP）的鲁棒性和有效的操纵二能级系统。该技术代表了一个改变版本的快速绝热通道（RAP），驱动复合序列的辐射脉冲与适当选择的相位。我们用射频脉冲来实现CAP以反转（即，以使Pr 3+：Y2SiO5晶体中的光学制备的自旋相干晶体再相化。我们进行系统的调查CAP的效率，并与传统的p脉冲和RAP的结果进行比较。这些数据清楚地表明，即使在弱绝热性条件下，CAP在稳健性和效率方面也具有上级特征。当需要维持相干激发过程的高效率或鲁棒性时，支持绝热通过的复合序列的实验证明具有重要的相关性，例如，这是量子信息技术所要求的。
We report an experimental demonstration of composite adiabatic passage (CAP) for robust and efficient manipulation of two-level systems. The technique represents a altered version of rapid adiabatic passage (RAP), driven by composite sequences of radiation pulses with appropriately chosen phases. We implement CAP with radio-frequency pulses to invert (i.e., to rephase) optically prepared spin coherences in a Pr3+:Y2SiO5 crystal. We perform systematic investigations of the efficiency of CAP and compare the results with conventional p pulses and RAP. The data clearly demonstrate the superior features of CAP with regard to robustness and efficiency, even under conditions of weakly fulfilled adiabaticity. The experimental demonstration of composite sequences to support adiabatic passage is of significant relevance whenever a high efficiency or robustness of coherent excitation processes need to be maintained, e.g., as required in quantum information technology.