Geometrical representation of coherent tunneling process in two-waveguide and three-waveguide coupler<xref rid="cpb_26_12_124214fn1" ref-type="fn">*</xref> <fn id="cpb_26_12_124214fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant Nos. 11304247 and 61505161) and the Shaanxi Provincial Research Plan for Young Scientific and Technological New Stars, China (Grant No. 2015KJXX-40).</p> </fn>

Geometrical representation of coherent tunneling process in two-waveguide and three-waveguide coupler* *

Project supported by the National Natural Science Foundation of China (Grant Nos. 11304247 and 61505161) and the Shaanxi Provincial Research Plan for Young Scientific and Technological New Stars, China (Grant No. 2015KJXX-40).

Shi Jian^†, Ma Rui-Qiong, Duan Zuo-Liang, Liang Meng, Chai Bao-Yu, Dong Jun

(color online) Schematic diagrams of (a) three-waveguide coupler and (b) the distribution functions of the tunneling rate versus propagation distance.