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arXiv 1302.1744physics.optics
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基于双Λ系统的少光子全光π相位调制

Few-Photon All-Optical π Phase modulation Based on a Double-Λ System

Yen-Chun Chen, Hao-Chung Chen, Hsiang-Yu Lo, Bing-Ru Tsai, Ite A. Yu, Ying-Cheng Chen, Yong-Fan Chen

摘要:

提出了一种基于双Λ系统的全光相位调制方案,并利用该方案在冷铷原子中实现了一个少光子脉冲与另一个少光子脉冲的π相移.通过改变外加激光场的相位,可以控制双Λ介质的性质。这种相位相关机制使得双Λ系统不同于传统的仅依赖于所施加的激光强度的基于交叉克尔的系统。该方案提供了一种新的途径来产生强非线性相互作用的光子,并可能在量子信息技术的应用潜力。

英文摘要:

We propose an efficient all-optical phase modulation based on a double-Λ system and demonstrate a π phase shift of a few-photon pulse induced by another few-photon pulse in cold rubidium atoms with this scheme. By changing the phases of the applied laser fields, one can control the property of the double-Λ medium. This phase-dependent mechanism makes the double-Λ system different form the conventional cross-Kerr-based system which only depends on the applied laser intensities. The proposed scheme provides a new route to generate strong nonlinear interactions between photons, and may have potential for applications in quantum information technologies.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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