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Valley contrasting physics in graphene: magnetic moment and topological transport
Di Xiao, Wang Yao, Qian Niu
We investigate physical properties that can be used to distinguish the valley degree of freedom in systems where inversion symmetry is broken, using graphene systems as examples. W…
Stimulated Raman spin coherence and spin-flip induced hole burning in charged GaAs quantum dots
Jun Cheng, Wang Yao, Xiaodong Xu +4
High-resolution spectral hole burning (SHB) in coherent nondegenerate differential transmission spectroscopy discloses spin-trion dynamics in an ensemble of negatively charged quan…
Valley Dependent Optoelectronics from Inversion Symmetry Breaking
Wang Yao, Di Xiao, Qian Niu
Inversion symmetry breaking allows contrasted circular dichroism in different k-space regions, which takes the extreme form of optical selection rules for interband transitions at…
Control of electron spin decoherence caused by electron-nuclear spin dynamics in a quantum dot
Ren-Bao Liu, Wang Yao, L. J. Sham
Control of electron spin decoherence in contact with a mesoscopic bath of many interacting nuclear spins in an InAs quantum dot is studied by solving the coupled quantum dynamics.…
Optical Control of Topological Quantum Transport in Semiconductors
Wang Yao, A. H. MacDonald, Qian Niu
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 co…