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Optical Control of Topological Quantum Transport in Semiconductors

Wang Yao·A. H. MacDonald·Qian Niu
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Abstract

Intense coherent laser radiation red-detuned from absorption edge can reactively activate sizable Hall type charge and spin transport in n-doped paramagnetic semiconductors as a consequence of k-space Berry curvature transferred from valence band to photon-dressed conduction band. In the presence of disorder, the optically induced Hall conductance can change sign with laser intensity.

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Wang Yao, A. H. MacDonald, Qian Niu. 2007-07-10. Optical Control of Topological Quantum Transport in Semiconductors. https://doi.org/10.1103/physrevlett.99.047401

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