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cond-mat1995★ 321 cited
Exciton condensate in semiconductor quantum well structures.
Xuejun Zhu, P. B. Littlewood, M. S. Hybertsen +1
We propose that the exciton condensate may form in a well-controlled way in appropriately arranged semiconductor quantum well structures. The mean-field theory of Keldysh and Kopae…
cond-mat1994★ 7 cited
Four-wave mixing and terahertz emission from three-level systems in quantum wells: effects of inhomogeneous broadening
Xuejun Zhu, Mark S. Hybertsen, P. B. Littlewood +1
Using a perturbation theory based on the density-matrix formulation, we study the nonlinear optical responses of a noninteracting three-level model system to consecutive coherent p…