Feasibility of studying vortex noise in two-dimensional superconductors with cold atoms
Feasibility of studying vortex noise in two-dimensional superconductors with cold atoms
复制标题
研究冷原子二维超导体涡旋噪声的可行性
DOI：
10.1103/physreva.75.064901
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发表时间：
2007
影响因子：
2.9
通讯作者：
E. Hinds
中科院分区：
文献类型：
--
作者：
S. Scheel;R. Fermani;E. Hinds
我们研究了利用被囚禁在薄超导体附近的超冷中性原子来研究接近Kosterlitz-Bézinskii转变温度的涡旋噪声的可行性。铷等碱金属原子探测涡旋产生的磁场。我们表明，弛豫时间T{子1}的塞曼子级人口可以方便地调整，以提供长的观察时间。我们还表明，横向弛豫时间T{sub 2}塞曼相干是理想的研究涡旋噪声。我们简要地考虑原子云的运动举行接近表面作为一种方法来监测的旋涡运动。
We investigate the feasibility of using ultracold neutral atoms trapped near a thin superconductor to study vortex noise close to the Kosterlitz-Thouless-Berezinskii transition temperature. Alkali atoms such as rubidium probe the magnetic field produced by the vortices. We show that the relaxation time T{sub 1} of the Zeeman sublevel populations can be conveniently adjusted to provide long observation times. We also show that the transverse relaxation times T{sub 2} for Zeeman coherences are ideal for studying the vortex noise. We briefly consider the motion of atom clouds held close to the surface as a method for monitoring the vortex motion.