冷原子介质中基于相干诱导高反射带和高透射带的全光路由控制 -

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冷原子介质中基于相干诱导高反射带和高透射带的全光路由控制

1.
长春理工大学光电信息学院,吉林长春 130012;
2.
吉林大学物理学院,吉林长春 130012

基金项目:

国家自然科学基金资助项目(No.10874057)

详细信息

作者简介:
国秀珍(1948-),女,吉林长春人,教授,主要从事量子光学、物理和应用方面的研究。 E-mail:guoxz@jlu.edu.cn 吴金辉(1975-),男,黑龙江讷河人,博士,教授,博士生导师,主要从事量子光学和量子信息领域相干与多能级原子相互作用的研究。E-mail:jhwu@jlu.edu.cn
国秀珍(1948-),女,吉林长春人,教授,主要从事量子光学、物理和应用方面的研究。 E-mail:guoxz@jlu.edu.cn 吴金辉(1975-),男,黑龙江讷河人,博士,教授,博士生导师,主要从事量子光学和量子信息领域相干与多能级原子相互作用的研究。E-mail:jhwu@jlu.edu.cn

中图分类号:O431.2
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- 被引次数:0
出版历程
- 收稿日期:2011-03-16
- 修回日期:2011-07-14
- 刊出日期:2011-08-25

All-optical routing control based on coherently induced high reflection band and high transmission band in a medium of cold atoms

1.
College of Optical and Electronical Information,Changchun University of Science and Technology,Changchun 130012,China;
2.
College of Physics,Jilin University,Changchun 130012,China

摘要

摘要:以相干诱导光子带隙结构为工作基础,提出了一种可对两个弱光信号的传播路径同时进行动态调控的新型全光路由控制方案。利用描述光波在空间周期介质中相干散射的传输矩阵理论,结合描述单频与多能级原子共振相互作用的密度矩阵方程,计算了作为控制媒介的相干驱动超冷原子系综的稳态反射光谱和稳态透射光谱。结果表明,通过改变两个较强相干的空间模式、强度和频率等参数,可在探测跃迁共振频率附近建立反射率约为95%或者透射率约为95%的两个特殊频带。对这样的相干诱导高反射带和高透射带进行了实时动态调控,可根据需要引导两个不同频率的弱光信号进入指定的网络通道。该方案很好地满足了在量子信息处理领域对弱光信号进行全光路由控制时的低损耗和低形变要求。
- 全光路由控制/
- 超冷原子系综/
- 相干诱导高透射带/
- 相干诱导高反射带
Abstract:On the basis of coherently induced photonic gap structures, a new all-optical routing control scheme is proposed to simultaneously control the propagation dynamics of two weak light signals. With the transfer-matrix method to describe the coherent scattering of light waves in periodic media and the density-matrix equations to describe the resonant interaction between monochromatic laser fields and multi-level atoms, the steady reflection and transmission spectra are calculated for a coherently driven ultra-cold atomic ensemble as the control medium. The results show that, by changing the spatial patterns, intensity, and frequencies of two strong laser fields, a pair of special frequency bands(with ~95% reflectivity or 95% transmissivity) can be first established near the probe resonance and then be manipulated at any time to induce two weak light signals of different frequencies into the desired network channels. This scheme well satisfies the basic requirements of low-deformation and low-loss for all-optical routing control of weak light signals in the field of quantum information processing.
- all-optical routing control/
- ultra-cold atomic ensemble/
- coherently induced high transmission band/
- coherently induced high reflection band

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参考文献 (1)

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