NEC Nano Electronics Research Laboratories, Tsukuba, Ibaraki 305-8501, Japan.
Science. 2010 Feb 12;327(5967):840-3. doi: 10.1126/science.1181918.
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.
在开放空间中，可以通过共振吸收和电磁波的再发射（称为共振荧光）来检测原子，这是量子光学的基本现象。我们报告了单个人工原子对传播波散射的观察结果。人工原子（超导宏观二能级系统）的行为与量子光学中对与一维开放空间中的电磁场相互作用的点状散射体的预测定量一致。在传播波的高度消光中揭示的强原子-场相互作用将允许可控人工原子在量子光学和光子学中的应用。
