Coherent tunneling by adiabatic passage in an optical waveguide system
Coherent tunneling by adiabatic passage in an optical waveguide system
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DOI：
10.1103/physrevb.76.201101
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发表时间：
2007-09
影响因子：
3.7
通讯作者：
S. Longhi;G. Valle;M. Ornigotti;P. Laporta
中科院分区：
文献类型：
--
作者：
S. Longhi;G. Valle;M. Ornigotti;P. Laporta
我们报告了工程三阱光波导结构中光传输的实验演示，该结构提供了绝热通道相干隧道效应（CTAP）的经典模拟，最近提出用于隧道耦合光阱或量子阱之间中性原子或电子空间中的相干传输。威尔斯[A. D. Greentree等人，Phys. Rev. B 70，235317（2004）; K.埃克特等人，A 70，023606（2004）]。由我们简单的光学系统实现的CTAP波包动力学的直接可视化清楚地表明，在违反直觉的通道方案中，光波在两个外部威尔斯阱之间隧穿，而没有对中间阱的明显激发。
We report on an experimental demonstration of light transfer in an engineered triple-well optical waveguide structure which provides a classic analog of coherent tunneling by adiabatic passage (CTAP) recently proposed for coherent transport in space of neutral atoms or electrons among tunneling-coupled optical traps or quantum wells [A. D. Greentree et al., Phys. Rev. B 70, 235317 (2004); K. Eckert et al., Phys. Rev. A 70, 023606 (2004)]. The direct visualization of CTAP wave-packet dynamics enabled by our simple optical system clearly shows that in the counterintuitive passage scheme light waves tunnel between the two outer wells without appreciable excitation of the middle well.