Hyperfine structure, optical dephasing, and spectral-hole lifetime of single-crystalline Pr3+: La-2(WO4)(3)
Hyperfine structure, optical dephasing, and spectral-hole lifetime of single-crystalline Pr3+: La-2(WO4)(3)
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DOI：
10.1103/physrevb.75.205110
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发表时间：
2007-05
影响因子：
3.7
通讯作者：
O. Guillot-Noël;P. Goldner;Y. -. Du;P. Loiseau;B. Julsgaard;L. Rippe;S. Kröll
中科院分区：
文献类型：
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作者：
O. Guillot-Noël;P. Goldner;Y. -. Du;P. Loiseau;B. Julsgaard;L. Rippe;S. Kröll
大多数与量子信息应用有关的实验，包括稀土掺杂的无机晶体，都是在正硅酸钇单晶上进行的。本文提出的工作是为了寻找可用于量子计算和/或量子存储领域的新化合物。用光子回波和光谱烧孔技术测量了1.4%Pr3+：La-2(WO4)(3)中H-3(4)(0)->；D-1(2)(0)相变在4K下的驰豫时间和超精细结构。基态H-3(4)(0)和激发态D-1(2)(0)的超精细分裂分别为14.9+/-0.1 MHz、24.6+/-0.1 MHz和5.0+/-0.1 MHz、7.3+/-0.1 MHz。测得非均匀线宽为18.8+/-0.1 GHz。在14mT左右的外磁场作用下，获得了25.3+/-2.0 kHz的均匀线宽。在H-3(4)-GT；D-1(2)跃迁中，通过直接激发得到的D-1(2)能级的荧光动力学给出了一个非指数衰减，这表明能量转移过程。这种衰变可以用Inokuti-Hirayama模型[J.太棒了。43,1978(1965)]，辐射寿命61+/-1亩S给出的最小均匀线宽为2.6千赫。由基态超精细能级内布居再分布引起的光谱-空穴寿命为16+/-2 S。对La-2(WO4)(3)化合物的计算结果使该晶体成为一种有趣的量子应用宿主。(更少)
Most of the experiments related to quantum information applications, involving rare-earth doped inorganic crystals, are performed on yttrium orthosilicate single crystals. The work presented here is motivated by the search of new compounds which can be used in the field of quantum computing and/or quantum storage. Relaxation times and hyperfine structure of the H-3(4)(0)-> D-1(2)(0) transition in 1.4% Pr3+:La-2(WO4)(3) at 4 K have been measured by photon-echo and spectral-hole-burning techniques. The hyperfine splittings of the ground H-3(4)(0) and the excited D-1(2)(0) states are 14.9 +/- 0.1 MHz, 24.6 +/- 0.1 MHz and 5.0 +/- 0.1 MHz, 7.3 +/- 0.1 MHz, respectively. An inhomogeneous linewidth of 18.8 +/- 0.1 GHz was measured. A homogeneous linewidth of 25.3 +/- 2.0 kHz was obtained with or without an external magnetic field of about 14 mT. The fluorescence dynamics of the D-1(2) level obtained by a direct excitation in the H-3(4)-> D-1(2) transition gives a nonexponential decay which indicates energy-transfer processes. This decay can be accurately fitted by the Inokuti-Hirayama model [J. Chem. Phys. 43, 1978 (1965)] with a radiative lifetime of 61 +/- 1 mu s giving a minimal homogeneous linewidth of 2.6 kHz. The spectral-hole lifetime due to population redistribution within the ground hyperfine levels is 16 +/- 2 s. The results obtained for the La-2(WO4)(3) compound make this crystal an interesting host for quantum applications. (Less)