Sub-Half-Wavelength Atom Localization Based on Phase-Dependent Electromagnetically Induced Transparency  

作　　者：龚成 胡响明 彭延东 

机构地区：[1]Department of Physics, Huazhong Normal University, Wuhan 430079

出　　处：《Chinese Physics Letters》2008年第2期505-508,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10574052 and 60778005.

摘　　要：We present a realistic and efficient scheme for sub-half-wavelength atom localization. This scheme is based on the phase-dependent electromagnetically induced transparency in a four-level system in the double-A configuration. We use a strong bichromatic field （one component of which is standing-wave field） as the driving components, and a weak bichromatic field as the probe components. By choosing the collective phase of the four applied components, the atom is localized in either of the two half-wavelength regions with 50% detecting probability when the absorption to the probe fields is detected.We present a realistic and efficient scheme for sub-half-wavelength atom localization. This scheme is based on the phase-dependent electromagnetically induced transparency in a four-level system in the double-A configuration. We use a strong bichromatic field （one component of which is standing-wave field） as the driving components, and a weak bichromatic field as the probe components. By choosing the collective phase of the four applied components, the atom is localized in either of the two half-wavelength regions with 50% detecting probability when the absorption to the probe fields is detected.

关 键 词：PULSARS x-ray spectra relativity and gravitation REDSHIFT 

分 类 号：O562[理学—原子与分子物理]