论文标题
来自两级人工原子的共振荧光强烈耦合到单模腔
Resonance Fluorescence from a two-level artificial atom strongly coupled to a single-mode cavity
论文作者
论文摘要
我们在实验上证明了两级人造原子的共振荧光强烈耦合到单模腔场。从理论上讲，这种效果是通过野蛮人[Phys。莱特牧师。 63，1376（1989）]。该系统由超导量子电路和一维传输线谐振器组成。此外，一维传输线与原子强烈耦合是一个开放空间。当将微波磁场应用于腔内时，效果发生了，而腔又将其互环耦合到原子。荧光光谱是通过发射到传输线的。我们发现，中央峰是由原子自发发射到开放空间的确定的，侧峰的宽度在很大程度上取决于原子与空腔之间的相互作用，也就是说，这里的荧光光谱与Mollow三重线的荧光光谱非常不同。我们还得出了频谱的分析形式。我们的实验结果与理论计算很好。
We experimentally demonstrate the resonance fluorescence of a two-level artificial atom strongly coupled to a single-mode cavity field. The effect was theoretically predicted thirty years ago by Savage [Phys. Rev. Lett. 63, 1376 (1989)]. The system consists of a superconducting qubit circuit and a one-dimensional transmission line resonator. In addition, a one-dimensional transmission line strongly coupled to the atom serves as an open space. The effect takes place, when a microwave field is applied to the cavity, which in turn is resonantly coupled to the atom. The fluorescence spectrum is measured via the emission into the transmission line. We find that the central peak is determined by the atom spontaneous emission to the open space and the widths of side peaks are largely determined by the coherent interaction between the atom and the cavity, that is, the fluorescence spectrum here is very different from that of the Mollow triplet. We also derive analytical form for the spectrum. Our experimental results agree well with theoretical calculations.
