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

• 来源期刊: 中国物理快报(英文版)
• 年，卷（期）: 2008,（2）
• 页码范围: 505-508
• 页数: 4页
• 语种: 英文

摘要

We present a realistic and efficient scheme for sub-half-wavelength atom localization.This scheme is based on the phase-dependent elecaromagnetically induced transparency in a four-level system in the double-Λ 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 js localized in either of the two half-wavelength regions with 50% detecting probability when the absorption to the probe fields is detected.