Institut für Angewandte Physik, Universität Bonn, Wegelerstrasse 8, D-53115 Bonn, Germany.
Phys Rev Lett. 2010 Oct 8;105(15):153603. doi: 10.1103/PhysRevLett.105.153603. Epub 2010 Oct 5.
We experimentally demonstrate the elementary case of electromagnetically induced transparency 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.
我们通过探测弱场的单个原子在光学腔内的实验演示了电磁感应透明的基本情况。我们通过改变控制光场的频率来观察原子的色散和吸收特性的变化。此外，在双光子共振处观察到了很强的冷却效果，使我们原子的存储时间增加了约二十倍，达到约 16 秒。我们的结果表明，单光子可以实现全光开关。
