单原子refractive index的光学控制
Optical control of the refractive index of a single atom
摘要：
实验研究了光腔中单个原子在弱场作用下产生电磁感应透明的基本情况。通过改变控制光场的频率，我们观察到原子的色散和吸收性质的改变。此外，在双光子共振下观察到了强烈的冷却效应，使我们原子的存储时间增加了20倍，达到约16秒。我们的结果指向单光子全光开关。
英文摘要：
We experimentally demonstrate the elementary case of electromagnetically induced transparency (EIT) with a single atom inside an optical cavity probed by a weak field. We observe the modification of the dispersive and absorptive properties of the atom by changing the frequency of a control light field. Moreover, a strong cooling effect has been observed at two-photon resonance, increasing the storage time of our atoms twenty-fold to about 16 seconds. Our result points towards all-optical switching with single photons.
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