Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland.
Phys Rev Lett. 2012 Feb 10;108(6):063004. doi: 10.1103/PhysRevLett.108.063004. Epub 2012 Feb 9.
The coherent interaction between ensembles of helium Rydberg atoms and microwave fields in the vicinity of a solid-state coplanar waveguide is reported. Rydberg-Rydberg transitions, at frequencies between 25 and 38 GHz, have been studied for states with principal quantum numbers in the range 30-35 by selective electric-field ionization. An experimental apparatus cooled to 100 K was used to reduce effects of blackbody radiation. Inhomogeneous, stray electric fields emanating from the surface of the waveguide have been characterized in frequency- and time-resolved measurements and coherence times of the Rydberg atoms on the order of 250 ns have been determined. These results represent a key element in the development of an experimental architecture to interface Rydberg atoms with solid-state devices.
报道了氦原子里德堡集合体与固态共面波导附近微波场之间的相干相互作用。通过选择性电场电离，研究了在主量子数范围为 30-35 的状态下，频率在 25 到 38 GHz 之间的里德堡-里德堡跃迁。使用冷却至 100 K 的实验设备来减少黑体辐射的影响。通过频率和时间分辨测量，对源自波导表面的非均匀、杂散电场进行了表征，并确定了里德堡原子的相干时间约为 250 ns。这些结果是开发将里德堡原子与固态器件接口的实验架构的关键要素。
