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理论物理通讯：英文版

Enhanced Deflection of Light Ray by Atomic Ensemble on Coherent Population Oscillation

Lǔ, Jing, Zhou, Lan Lan, Kuang Kuang, Le-Man

Published Jan 1, 2009• 0 citations
OpenAlex

Abstract

在最近的实验[例如，自然物理 2 (2006 ) 332 ] ，在一个原子整体的提高的轻偏转被电镀物品有磁力地由于不同类的地表明导致的透明性(EIT ) 基于机制。在这篇论文，我们为提高的轻偏转的类似的现象探索不同机制。这机制基于协调人口摆动，它导致在吸收光谱烧的洞。引起探查光的偏转的媒介是在二光子回声上由一块强壮的控制的地操作的二水平的原子的一个整体。处于大 detuning 条件，到泵地和信号地的媒介的反应与稳定的州的近似被获得。并且在越过媒介的探查域旅行以后，信号光线由于控制横梁的空间依赖者的侧面弯曲，这被发现。

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Enhanced Deflection of Light Ray by Atomic Ensemble on Coherent Population Oscillation

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In recent experiments [e.g., Nature Physics 2 (2006) 332], the enhanced light deflection in an atomic ensemble due to inhomogeneous fields is demonstrated by the electromagnetically induced transparency (EIT) based mechanism. In this paper, we explore a different mechanism for the similar phenomenon of the enhanced light deflection. This mechanism is based on the coherent population oscillation, which leads to the hole burning in the absorption spectrum. The medium causing the deflection of probe light is an ensemble of two-level atoms manipulated by a strong controlled field on the two photon resonances. In the large detuning condition, the response of the medium to the pump field and signal field is obtained with steady state approximation. And it is found that after the probe field travels across the medium, the signal ray bends due to the spatial-dependent profile of the control beam.

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In recent experiments[e.g., Nature Physics 2, 332 (2006)], the enhanced light deflection in an atomic ensemble due to inhomogeneous fields is demonstrated by the electromagnetically induced transparency (EIT) based mechanism. In this paper, we explore an different mechanism for the similar phenomenon of the enhanced light deflection. This mechanism is based on the coherent population oscillation, which leads to the hole burning in the absorption spectrum. The medium causing the deflection of probe light is an ensemble of two-level atoms manipulated by a strong controlled field on the two photon resonances. In the large detuning condition, the response of the medium to the pump field and signal field is obtained with steady state approximation. And it is found that after the probe field travels across the medium, the signal ray bends due to the spatial-dependent profile of the control beam.

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在最近的实验[例如，自然物理 2 (2006 ) 332 ] ，在一个原子整体的提高的轻偏转被电镀物品有磁力地由于不同类的地表明导致的透明性(EIT ) 基于机制。在这篇论文，我们为提高的轻偏转的类似的现象探索不同机制。这机制基于协调人口摆动，它导致在吸收光谱烧的洞。引起探查光的偏转的媒介是在二光子回声上由一块强壮的控制的地操作的二水平的原子的一个整体。处于大 detuning 条件，到泵地和信号地的媒介的反应与稳定的州的近似被获得。并且在越过媒介的探查域旅行以后，信号光线由于控制横梁的空间依赖者的侧面弯曲，这被发现。
In recent experiments [e.g., Nature Physics 2 (2006) 332], the enhanced light deflection in an atomic ensemble due to inhomogeneous fields is demonstrated by the electromagnetically induced transparency (EIT) based mechanism. In this paper, we explore a different mechanism for the similar phenomenon of the enhanced light deflection. This mechanism is based on the coherent population oscillation, which leads to the hole burning in the absorption spectrum. The medium causing the deflection of probe light is an ensemble of two-level atoms manipulated by a strong controlled field on the two photon resonances. In the large detuning condition, the response of the medium to the pump field and signal field is obtained with steady state approximation. And it is found that after the probe field travels across the medium, the signal ray bends due to the spatial-dependent profile of the control beam.
In recent experiments[e.g., Nature Physics 2, 332 (2006)], the enhanced light deflection in an atomic ensemble due to inhomogeneous fields is demonstrated by the electromagnetically induced transparency (EIT) based mechanism. In this paper, we explore an different mechanism for the similar phenomenon of the enhanced light deflection. This mechanism is based on the coherent population oscillation, which leads to the hole burning in the absorption spectrum. The medium causing the deflection of probe light is an ensemble of two-level atoms manipulated by a strong controlled field on the two photon resonances. In the large detuning condition, the response of the medium to the pump field and signal field is obtained with steady state approximation. And it is found that after the probe field travels across the medium, the signal ray bends due to the spatial-dependent profile of the control beam.
我们在与一块单个模式、协调状态的轻地交往的一根原子横梁的动力学在周期的自发的倒塌和苏醒的现象上报导。常规倒塌和苏醒由 Eberly 等。[Phys。加快。Lett。44 (1980 ) 1323 ] 与人口倒置的时间在进化的情况中被介绍。这里，我们与联合人口倒置的力量学习进化。我们定义作为典型参数联合力量描述上述倒塌的倒塌和苏醒和苏醒。而且，我们在场为联合力量的人口倒置，倒塌和苏醒的分析公式。
We study the coherent propagation of light whose dynamics is governed by the effective Schr\"odinger equation derived in a magneto-optically manipulated atomic ensemble with a four-level tripod configuration for electromagnetically induced transparency (EIT). The small transverse deflection of an optical beam, which is ultrasensitive to the EIT effect, could be drastically amplified via a weak measurement with an appropriate preselection and postselection of the polarization state. The physical mechanism is explained as the effect of wave-packet reshaping, which results in an enlarged group velocity in the transverse direction.