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arXiv 2310.03300cond-mat.quant-gasphysics.atom-ph
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高效制备超冷基态$^{6}\ extrm{Li}^{40}\ extrm{K}$极性分子

Efficient Creation of Ultracold Ground State $^{6}\textrm{Li}^{40}\textrm{K}$ Polar Molecules

Canming He, Xiaoyu Nie, Victor Avalos, Sofia Botsi, Sunil Kumar, Anbang Yang, Kai Dieckmann

AI总结:

本研究通过单重态STIRAP路径结合窄线宽激光器,高效制备了超冷基态$^{6}\ extrm{Li}^{40}\ extrm{K}$极性分子,测得96(4)%的转移效率与5.0(3) ms的阱中寿命,证实其大偶极矩,为量子多体物理研究提供了新平台。

摘要:

我们报道了高效制备超冷基态$^{6}\ extrm{Li}^{40}\ extrm{K}$极性分子的研究。从弱束缚分子态出发,采用受激拉曼绝热通道(STIRAP)将分子相干转移至单重态振转基态$|\ extrm{X}^{1}Σ^{+},v=0,J=0>$。通过利用单重态STIRAP路径和低相位噪声窄线宽激光器,我们观测到96(4)%的单向转移效率。在光偶极阱中,测得基态分子的寿命为5.0(3) ms。通过对分子施加直流电场并开展基态斯塔克位移光谱研究,证实了LiK具有较大的固有偶极矩。结合碰撞量子控制领域的最新进展,本工作为利用强相互作用$^{6}\ extrm{Li}^{40}\ extrm{K}$分子探索量子多体物理铺平了道路。

英文摘要:

We report the creation of ultracold ground state $^{6}\textrm{Li}^{40}\textrm{K}$ polar molecules with high efficiency. Starting from weakly-bound molecules state, stimulated Raman adiabatic passage (STIRAP) is adopted to coherently transfer the molecules to their singlet ro-vibrational ground state $|\textrm{X}^{1}Σ^{+},v=0,J=0>$. By employing a singlet STIRAP pathway and low-phase-noise narrow-linewidth lasers, we observed a one-way transfer efficiency of 96(4)\,\%. Held in an optical dipole trap, the lifetime of the ground-state molecules is measured to be 5.0(3)\,ms. The large permanent dipole moment of LiK is confirmed by applying a DC electric field on the molecules and performing Stark shift spectroscopy of the ground state. With recent advances in the quantum control of collisions, our work paves the way for exploring quantum many-body physics with strongly-interacting $^{6}\textrm{Li}^{40}\textrm{K}$ molecules.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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