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arXiv 1812.02151quant-phcond-mat.mes-hall
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带电量子点中自旋选择性AC的Stark位移

Spin-selective AC Stark shifts in a charged quantum dot

Tristan A. Wilkinson, Dillion J. Cottrill, Joshua M. Cramlet, Cole E. Maurer, Collin J. Flood, Allan S. Bracker, Michael Yakes, Dan Gammon, Edward B. Flagg

摘要:

强的远失谐激光可以通过AC斯塔克效应移动光学活性量子系统的能级。我们证明了激光的偏振导致带电量子点的能量结构的自旋选择性修改,移动一个自旋流形而不是其他。由于核自旋的奥弗豪泽场,会发生额外的位移,这些核自旋被泵入部分极化状态。这种机制提供了一个潜在的快速,可逆的,和一致的控制的能量结构和极化选择规则的带电量子点。

英文摘要:

A strong, far-detuned laser can shift the energy levels of an optically active quantum system via the AC Stark effect. We demonstrate that the polarization of the laser results in a spin-selective modification to the energy structure of a charged quantum dot, shifting one spin manifold but not the other. An additional shift occurs due to the Overhauser field of the nuclear spins, which are pumped into a partially polarized state. This mechanism offers a potentially rapid, reversible, and coherent control of the energy structure and polarization selection rules of a charged quantum dot.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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