Dissipative motion of an atom with transverse coherent driving in a cavity with many degenerate modes
Dissipative motion of an atom with transverse coherent driving in a cavity with many degenerate modes
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DOI：
10.1103/physreva.66.043406
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发表时间：
2002-10
影响因子：
2.9
通讯作者：
P. Domokos;T. Salzburger;H. Ritsch
中科院分区：
文献类型：
--
作者：
P. Domokos;T. Salzburger;H. Ritsch
我们研究了沿高Q多模腔轴运动的横向相干泵浦原子的质心运动的腔致冷却。包括腔场的自发辐射和量子涨落，我们解析地计算了线性摩擦系数和扩散系数。有效的腔场诱导运动衰减使稳态温度远低于多普勒限，比直接腔场泵浦的等效装置更低。在多模场的情况下，冷却过程得到了强烈的增强，产生了显著较低的温度和每次冷却时间的少量自发辐射，甚至可以降到1以下。
We study the cavity-induced cooling of the center-of-mass motion of a transversally coherently pumped atom moving along the axis of a high-Q multimode cavity. Including spontaneous emission and quantum fluctuations of thecavity field, we analytically calculate the linear friction and the diffusion coefficients. Efficient cavity-induced motional damping leads to steady-state temperatures well below the Doppler limit and lower than for an equivalent setup with direct cavity field pumping. The cooling process is strongly enhanced in the case of a multimode field, yielding a significantly lower temperature and a small number of spontaneous emissions per cooling time, which can even drop below 1.