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

doi:10.1088/1674-1056/26/12/124214

中国物理B ›› 2017, Vol. 26 ›› Issue (12): 124214-124214.doi: 10.1088/1674-1056/26/12/124214

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

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

Jian Shi(时坚), Rui-Qiong Ma(马瑞琼), Zuo-Liang Duan(段作梁), Meng Liang(梁猛), Bao-Yu Chai(柴宝玉), Jun Dong(董军)

School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

收稿日期:2017-05-09 修回日期:2017-07-01 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: Jian Shi E-mail:shijian@xupt.edu.cn
基金资助:
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).

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

Jian Shi(时坚), Rui-Qiong Ma(马瑞琼), Zuo-Liang Duan(段作梁), Meng Liang(梁猛), Bao-Yu Chai(柴宝玉), Jun Dong(董军)

School of Electronic Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710121, China

Received:2017-05-09 Revised:2017-07-01 Online:2017-12-05 Published:2017-12-05
Contact: Jian Shi E-mail:shijian@xupt.edu.cn
Supported by:
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).

摘要/Abstract

摘要： We propose an identical geometrical representation scheme for both Landau-Zener (LZ) tunneling process in two-waveguide coupler with a cubically bent structure and stimulated Raman adiabatic passage (STIRAP) in three-waveguide coupler, similar to the geometrical representation of sum frequency process. The results show that although the two-waveguide coupler with a cubically bent axis has not aperiodic structure, it acts as a chirped quasi-phase-matching (QPM) grating and corrects the relative phase between the two supermodes in the curved coupler system. We present a scheme about how to choose the parameters to design the curved beam splitter.

关键词: optical coupler, adiabatic passage, non-adiabatic passage, Bloch vector

Abstract: We propose an identical geometrical representation scheme for both Landau-Zener (LZ) tunneling process in two-waveguide coupler with a cubically bent structure and stimulated Raman adiabatic passage (STIRAP) in three-waveguide coupler, similar to the geometrical representation of sum frequency process. The results show that although the two-waveguide coupler with a cubically bent axis has not aperiodic structure, it acts as a chirped quasi-phase-matching (QPM) grating and corrects the relative phase between the two supermodes in the curved coupler system. We present a scheme about how to choose the parameters to design the curved beam splitter.

Key words: optical coupler, adiabatic passage, non-adiabatic passage, Bloch vector

中图分类号: (Waveguides, couplers, and arrays)

42.82.Et

42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation) 32.80.Qk (Coherent control of atomic interactions with photons)

时坚, 马瑞琼, 段作梁, 梁猛, 柴宝玉, 董军. Geometrical representation of coherent tunneling process in two-waveguide and three-waveguide coupler[J]. 中国物理B, 2017, 26(12): 124214-124214.

Jian Shi(时坚), Rui-Qiong Ma(马瑞琼), Zuo-Liang Duan(段作梁), Meng Liang(梁猛), Bao-Yu Chai(柴宝玉), Jun Dong(董军). Geometrical representation of coherent tunneling process in two-waveguide and three-waveguide coupler[J]. Chin. Phys. B, 2017, 26(12): 124214-124214.

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

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

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