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Tuesday, March 17, 2015
Abstract-Coherent Terahertz Control of Vertical Transport in Semiconductor Heterostructures
O. Vänskä, I. Tittonen, S. W. Koch, and M. Kira
Phys. Rev. Lett. 114, 116802 – Published 16 March 2015
Coherent-control protocols are introduced to selectively transport electrons, excitons, or pure two-particle correlations through semiconductor interfaces. The scheme is tested in a double-quantum-well structure where a sequence of terahertz pulses is applied to induce the vertical excitation transfer between the wells. Using a microscopic theory, it is shown that efficient and highly selective transfer can be realized even in the presence of the unavoidable scattering and dephasing processes.