Effects of disorder on optical and electron spin linewidths in Er 3+ ,Sc 3+ :Y 2 SiO 5

Effects of disorder on optical and electron spin linewidths in Er 3+ ,Sc 3+ :Y 2 SiO 5
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无序对Er 3 ,Sc 3 :Y 2 SiO 5 光学和电子自旋线宽的影响

DOI:
10.1016/j.optmat.2016.09.039
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发表时间:
2017
期刊:
影响因子:
3.9
通讯作者:
Goldner, P.
Goldner, P.
中科院分区:
材料科学3区
文献类型:
--
作者:
Welinski, S.;Thiel, C.W.;Dajczgewand, J.;Ferrier, A.;Cone, R.L.;Macfarlane, R.M.;Chanelière, T.;Louchet-Chauvet, A.;Goldner, P.

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研究了与Sc3+共掺杂的Er3+: y2sio5材料在光量子存储和信号处理中的应用。用Sc3+取代晶体中1%的Y3+,在晶格中引入静态应变,增加了Er3+光学跃迁的非均匀线宽(1.536 μm至25 GHz),与未掺杂Sc3+的Er3+: y2sio5样品相比增加了50倍。电子顺磁共振谱显示,电子自旋线宽也大幅增加,证实了先前提出的利用无序抑制共振自旋-自旋相互作用抑制退相干的机制。对自旋线展宽作为磁场方向的函数的分析表明,存在不能通过电子张量的简单变化来建模的贡献。在弱磁场为0.1 T时,观察到光学均匀线宽小于2 kHz,在温度为1.7 K时,也观察到场大于2 T且场取向靠近d2晶轴的光均匀线宽小于2 kHz。这些结果表明,该材料可用于电信c波段的高带宽经典和量子信息处理。
The material Er3+:Y2SiO5co-doped with Sc3+is investigated for applications in optical quantum storage and signal processing. Replacing 1% of the Y3+in the crystal with Sc3+introduces static strain into the lattice that increases the inhomogeneous linewidth of the Er3+optical transition at 1.536 μm to 25 GHz, a 50-fold increase compared to Er3+:Y2SiO5samples without Sc3+co-doping. Electron paramagnetic resonance spectroscopy shows that electron spin linewidths are also strongly increased, confirming the previously proposed mechanism for decoherence suppression by using disorder to inhibit resonant spin-spin interactions. Analysis of the spin line broadening as a function of magnetic field orientation indicates the presence of contributions that cannot be modeled by a simple change in the electronicgtensor. Optical homogeneous linewidths of less than 2 kHz are observed for a weak magnetic field of 0.1 T and also for fields greater than 2 T with the field oriented near theD2crystal axis and at a temperature of 1.7 K. These results suggest that this material can be useful for high-bandwidth classical and quantum information processing in the telecom C-band.
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