Optical spectral imaging of a single layer of a quantum gas with an ultranarrow optical transition
Optical spectral imaging of a single layer of a quantum gas with an ultranarrow optical transition
复制标题
具有超窄光学跃迁的单层量子气体的光谱成像
DOI：
10.1103/physreva.89.031601
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
and Yoshiro Takahashi
中科院分区：
文献类型：
--
作者：
Kosuke Shibata;Ryuta Yamamoto;Yu Seki;and Yoshiro Takahashi
我们证明了高灵敏度的光谱成像的单层的镱原子的量子气体在二维光学晶格中使用ultransarrow的过渡。我们成功地获得了一组激发频率依赖的荧光图像与激发激光的线宽为1 kHz（FWHM），并考虑到不均匀的光移起源于高斯光束形状的光学晶格势，提供了最陡的电位梯度为3.6 kHz/m的整体功能得到了很好的解释。这一结果也成功地证明了可调谐局域原子寻址沿着等位线依赖于激发激光频率与频率分辨率为8 kHz和空间分辨率约为2米。该技术在量子气体研究和量子信息处理中的相互作用位移的测量等方面具有重要的应用价值。
We demonstrated high-sensitivity optical spectral imaging of a single layer of a quantum gas of ytterbium atoms in a two-dimensional optical lattice using the ultranarrow-transition. We successfully obtained a set of excitation-frequency-dependent fluorescence images with an excitation laser of the linewidth of 1 kHz (FWHM), and the overall features were well explained by considering the inhomogeneous light shift originating from the Gaussian beam shape of the optical lattice potential which provided the steepest potential gradient of 3.6 kHz/m. This result is also the successful demonstration of the tunable local atom addressing along the equipotential contour depending on the excitation laser frequency with the frequency resolution of 8 kHz and the spatial resolution of approximately 2m. The demonstrated technique will be useful for many purposes including the measurement of interaction shift in the study of a quantum gas and quantum information processing.