Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
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DOI：
10.1103/physreva.102.053316
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发表时间：
2020-07
影响因子：
2.9
通讯作者：
J. A. Blackmore;Rahul Sawant;P. D. Gregory;S. Bromley;J. Aldegunde;J. Hutson;S. Cornish
中科院分区：
文献类型：
--
作者：
J. A. Blackmore;Rahul Sawant;P. D. Gregory;S. Bromley;J. Aldegunde;J. Hutson;S. Cornish
研究了静电场和静磁场对超冷玻色子$^{87}$Rb$^{133}$Cs分子微波跃迁的微分交流斯塔克位移的影响。在这个波长附近，我们观察到意想不到的双光子跃迁，可能会导致陷阱损失。我们测量的交流斯塔克效应在外部磁场和电场中，使用微波光谱的第一个旋转跃迁。我们量化的各向同性和各向异性的分子极化率在这个波长的部分。我们证明了一个适度的电场可以使核自旋与转动角动量解耦，大大简化了交流斯塔克效应。我们利用这种简化来控制交流斯塔克位移使用的偏振角的捕获激光。
We investigate the effects of static electric and magnetic fields on the differential ac Stark shifts for microwave transitions in ultracold bosonic $^{87}$Rb$^{133}$Cs molecules, for light of wavelength $\lambda = 1064~\mathrm{nm}$. Near this wavelength we observe unexpected two-photon transitions that may cause trap loss. We measure the ac Stark effect in external magnetic and electric fields, using microwave spectroscopy of the first rotational transition. We quantify the isotropic and anisotropic parts of the molecular polarizability at this wavelength. We demonstrate that a modest electric field can decouple the nuclear spins from the rotational angular momentum, greatly simplifying the ac Stark effect. We use this simplification to control the ac Stark shift using the polarization angle of the trapping laser.