Resonance Fluorescence of a Single Artificial Atom
Resonance Fluorescence of a Single Artificial Atom
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DOI：
10.1126/science.1181918
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发表时间：
2010-02-12
期刊：
影响因子：
56.9
通讯作者：
Tsai, J. S.
中科院分区：
文献类型：
--
作者：
Astafiev, O.;Zagoskin, A. M.;Tsai, J. S.
开放空间中的原子可以通过电磁波的共振吸收和再发射来探测，这被称为共振荧光，这是量子光学的一个基本现象。我们报道了单个人造原子对传播波的散射观测。人造原子是一个超导宏观二能级系统，它的行为与量子光学关于一维开放空间中点状散射体与电磁场相互作用的量子光学预测是定量一致的。传播波的高度消光所揭示的强原子-场相互作用将使可控人造原子在量子光学和光子学中得到应用。
An atom in open space can be detected by means of resonant absorption and reemission of electromagnetic waves, known as resonance fluorescence, which is a fundamental phenomenon of quantum optics. We report on the observation of scattering of propagating waves by a single artificial atom. The behavior of the artificial atom, a superconducting macroscopic two-level system, is in a quantitative agreement with the predictions of quantum optics for a pointlike scatterer interacting with the electromagnetic field in one-dimensional open space. The strong atom-field interaction as revealed in a high degree of extinction of propagating waves will allow applications of controllable artificial atoms in quantum optics and photonics.