Windpassinger P J, Oblak D, Petrov P G, Kubasik M, Saffman M, Alzar C L Garrido, Appel J, Müller J H, Kjaergaard N, Polzik E S
QUANTOP, Niels Bohr Institute, University of Copenhagen, Denmark.
Phys Rev Lett. 2008 Mar 14;100(10):103601. doi: 10.1103/PhysRevLett.100.103601. Epub 2008 Mar 13.
We report on the nondestructive observation of Rabi oscillations on the Cs clock transition. The internal atomic state evolution of a dipole-trapped ensemble of cold atoms is inferred from the phase shift of a probe laser beam as measured using a Mach-Zehnder interferometer. We describe a single color as well as a two-color probing scheme. Using the latter, measurements of the collective pseudospin projection of atoms in a superposition of the clock states are performed and the observed spin fluctuations are shown to be close to the standard quantum limit.
我们报告了在铯原子钟跃迁上对拉比振荡的无损观测。通过马赫 - 曾德尔干涉仪测量的探测激光束的相移，推断出偶极阱捕获的冷原子系综的内部原子态演化。我们描述了单色以及双色探测方案。使用后者，对处于钟态叠加态的原子的集体赝自旋投影进行了测量，并且所观测到的自旋涨落被证明接近标准量子极限。
