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Chinese Physics Letters

Sub-Half-Wavelength Atom Localization via Coherent Control of Autler-Townes Spontaneous Spectrum

Jun Liang Xu, 胡响明

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

我们证明在放松原子作为在 therecently 建议的计划处于一个特定的激动的状态被准备的严格的条件的一半波长 regionby 本地化一个原子是可能的[Phys。加快。一 65 (2002 ) 043819 ] 。特别地，我们认为 four-levelatom，弱激动为成立了从扎根的状态把人口转移到三控制回答的激动的 stateand (当二旅行波浪回答时，保持的一看台波浪) 夫妇 theexcited 状态和二个辅助状态。由调节激动成立了并且由变化，控制的 collectivephase 回答，原子在检测概率的二一半波长区域 with50% 之一是局部性的。计划的主要优点是试验性的可接近性 andcontrollability。

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Subwavelength atom localization via amplitude and phase control of the absorption spectrum. II

Kishore T. Kapale, Muhammad Suhail Zubairy

Interaction of the internal states of an atom with spatially dependent standing-wave cavity field can impart position information of the atom passing through it leading to subwavelength atom localization. We recently demonstrated a different regime of atom localization [Phys. Rev. A 72, 013820 (2005)], namely sub-half-wavelength localization through phase control of electromagnetically induced transparency. This regime corresponds to extreme localization of atoms within a chosen half-wavelength region of the standing-wave cavity field. Here we present further investigation of the simplified model considered earlier and show interesting features of the proposal. We show how the model can be used to simulate a variety of energy-level schemes. Furthermore, the dressed-state analysis is employed to explain the emergence and suppression of the localization peaks, and the peak positions and widths. The range of parameters for obtaining clean sub-half-wavelength localization is identified.

arXiv:quant-ph/0509068•Physical Review A•Feb 15, 2006•175 citations
我们证明在放松原子作为在 therecently 建议的计划处于一个特定的激动的状态被准备的严格的条件的一半波长 regionby 本地化一个原子是可能的[Phys。加快。一 65 (2002 ) 043819 ] 。特别地，我们认为 four-levelatom，弱激动为成立了从扎根的状态把人口转移到三控制回答的激动的 stateand (当二旅行波浪回答时，保持的一看台波浪) 夫妇 theexcited 状态和二个辅助状态。由调节激动成立了并且由变化，控制的 collectivephase 回答，原子在检测概率的二一半波长区域 with50% 之一是局部性的。计划的主要优点是试验性的可接近性 andcontrollability。
Interaction of the internal states of an atom with spatially dependent standing-wave cavity field can impart position information of the atom passing through it leading to subwavelength atom localization. We recently demonstrated a different regime of atom localization [Phys. Rev. A 72, 013820 (2005)], namely sub-half-wavelength localization through phase control of electromagnetically induced transparency. This regime corresponds to extreme localization of atoms within a chosen half-wavelength region of the standing-wave cavity field. Here we present further investigation of the simplified model considered earlier and show interesting features of the proposal. We show how the model can be used to simulate a variety of energy-level schemes. Furthermore, the dressed-state analysis is employed to explain the emergence and suppression of the localization peaks, and the peak positions and widths. The range of parameters for obtaining clean sub-half-wavelength localization is identified.