Towards optical manipulation and resistive readout of the GaAs nuclear spins

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• 作者：J.M. Buset ; A.H. Mack ; D. Laroche ; C.R. Dean ; M.P. Lilly ; J.L. Reno ; G. Gervais
• 关键词：Quantum Hall ; Quantum well ; Overhauser effect ; Polarization controller
• 刊名：Physica E
• 出版年：2008
• 期刊代码：139_13869477
• 类别：et
• 出版时间：March 2008
• 卷：40
• 期：5
• 页码：1252-1254
• 文件大小：362 K

摘要

We present an investigation into the manipulation of nuclear spins near the ν=1 quantum Hall state of GaAs/AlGaAs using optical pumping methods. For this, we have built a custom-designed polarization controller which allows for arbitrary polarizations of near-infrared laser light to be transmitted through fiber optics onto the sample. Using resistive readout, it is demonstrated that different polarizations of light induce specific changes in the transport properties in the first Landau level of the GaAs/AlGaAs quantum well.