Spin Noise in Birefringent Media,Physical Review Letters

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Spin Noise in Birefringent Media
Physical Review Letters ( IF 8.1 ) Pub Date : 2022-08-10 , DOI: 10.1103/physrevlett.129.077401
V O Kozlov _{1,

2} , N S Kuznetsov _{1,

2} , D S Smirnov _{1,

3} , I I Ryzhov _{1,

2} , G G Kozlov _{1,

4} , V S Zapasskii ₁

Affiliation

It is known that linear birefringence of the medium essentially hinders measuring the Faraday effect. For this reason, optically anisotropic materials have never been considered as objects of the Faraday-rotation-based spin noise spectroscopy. We show, both theoretically and experimentally, that strong optical anisotropy that may badly suppress the regular Faraday rotation of the medium, practically does not affect the measurement of the spatially uncorrelated spin fluctuations. We also show that the birefringent media provide additional opportunity to measure spatial spin correlations. Results of the experimental measurements of the spin-noise spectra performed on

{Nd}^{3 +}

ions in the uniaxial crystal matrices well agree with the theory.

中文翻译：

双折射介质中的自旋噪声

众所周知，介质的线性双折射本质上阻碍了法拉第效应的测量。出于这个原因，光学各向异性材料从未被视为基于法拉第旋转的自旋噪声光谱的对象。我们在理论上和实验上都表明，可能严重抑制介质的常规法拉第旋转的强光学各向异性实际上不会影响空间不相关自旋涨落的测量。我们还表明，双折射介质为测量空间自旋相关性提供了额外的机会。自旋噪声谱的实验测量结果

钕^{3 +}

单轴晶体基质中的离子与该理论非常吻合。

更新日期：2022-08-10

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