磁场作用下Tm3 +：YAG“λ”系统分支比的测量
Branching ratio measurement of a "Lambda" system in Tm3+:YAG under magnetic field
摘要：
从量子信息处理的角度出发，对掺Tm ~（3+）YAG晶体中的三能级λ系统进行了实验研究。塞曼效应被用来提升该离子的核自旋简并度。在先前的论文[de Seze et al. Phys. Rev. B，73，85 112（2006）]中，我们测量了旋磁张量分量，并得出结论，适当的磁场取向可以优化两个基态子能级与每个激发态子能级的光学连接，从而产生λ系统。在这里，我们报告的直接测量的跃迁概率比沿两条腿的λ。测量技术将频率选择性光泵浦与光章动或光子回波过程相结合。
英文摘要：
A three-level Lambda system in Tm3+ doped YAG crystal is experimentally investigated in the prospect of quantum information processing. Zeeman effect is used to lift the nuclear spin degeneracy of this ion. In a previous paper [de Seze et al. Phys. Rev. B, 73, 85112 (2006) we measured the gyromagnetic tensor components and concluded that adequate magnetic field orientation could optimize the optical connection of both ground state sublevels to each one of the excited state sublevels, thus generating Lambda systems. Here we report on the direct measurement of the transition probability ratio along the two legs of the Lambda. Measurement techniques combine frequency selective optical pumping with optical nutation or photon echo processes.
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