Trapping of Neutral Atoms with a Radio-Frequency Field

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2005,（1）
• 页码范围: 83-86
• 页数: 4页
• 语种: 英文

摘要

Based on the dressed-atom approach, we discuss a two-dimensional (2D) radio-frequency trap for neutral atoms, in which the trap potential derives from the magnetic-dipole transitions among the hyperfine Zeeman sublevels. By adjusting the detuning of the radiation from resonance, the trapping states will be changed predominantly from the bare states of mFgF ＞ 0 to other states of mFgF ＜ 0, where mF and 9F are the quantum numbers ofZeeman sublevels and the Landé factor, respectively. This character contrasts finely with that of a static magnetic trap that can only trap or guide the states of mFgF ＞ 0. In comparison to the optical field, the radio-frequency trap eliminates the spontaneous emission heating of the atoms. Unlike other oscillating traps reported in theliterature, the configuration of the radio-frequency trap is suitable for realization of a miniature magnetic guide.