论文标题
Ultracold $^{87} $ rb $^{133} $ cs分子的内部状态的连贯操纵
Coherent Manipulation of the Internal State of Ultracold $^{87}$Rb$^{133}$Cs Molecules with Multiple Microwave Fields
论文作者
论文摘要
我们使用3级lambda和梯子配置探索$^{87} $ rb $^{133} $ rb $^{133} $ rb $^{133} $^{87} $^{87} $^{87} $^{87}的过程，并使用3级lambda和阶梯配置进行旋转和超细状态的配置，并讨论它们在量子计算和量子模拟中的未来应用中的相关性。在lambda配置中，我们通过两光子拉曼的转变证明了旋转基态两个高精细水平之间的人口驱动。将来可以将这种状态对用作量子记忆，我们测量了58（9）ms的这些状态的叠加的Ramsey相干时间。在梯子配置中，我们表明我们可以通过观察自动镇双线群来生成并相干地填充微波炉的状态。我们证明我们可以通过改变微波耦合场的强度来控制这种敷料的强度。最后，我们对$^{87} $ rb $^{133} $ cs的旋转状态进行光谱，最高$ n = 6 $，强调了超声分子在合成维度中的量子模拟的潜力。通过拟合测得的过渡频率，我们确定离心失真系数的新值$ d_v = h \ times 207.3（2）〜$ Hz。
We explore coherent multi-photon processes in $^{87}$Rb$^{133}$Cs molecules using 3-level lambda and ladder configurations of rotational and hyperfine states, and discuss their relevance to future applications in quantum computation and quantum simulation. In the lambda configuration, we demonstrate the driving of population between two hyperfine levels of the rotational ground state via a two-photon Raman transition. Such pairs of states may be used in the future as a quantum memory, and we measure a Ramsey coherence time for a superposition of these states of 58(9) ms. In the ladder configuration, we show that we can generate and coherently populate microwave dressed states via the observation of an Autler-Townes doublet. We demonstrate that we can control the strength of this dressing by varying the intensity of the microwave coupling field. Finally, we perform spectroscopy of the rotational states of $^{87}$Rb$^{133}$Cs up to $N=6$, highlighting the potential of ultracold molecules for quantum simulation in synthetic dimensions. By fitting the measured transition frequencies we determine a new value of the centrifugal distortion coefficient $D_v=h\times207.3(2)~$Hz.
