312 citations · 763 across the 9 of their papers we have counts for
5 papers · 1 filter
Ultrafast demagnetization in the sp-d model: a theoretical study
L. Cywinski, L. J. Sham
We propose and analyze a theoretical model of ultrafast light-induced magnetization dynamics in systems of localized spins that are coupled to carriers' spins by sp-d exchange inte…
Theory of electron spin decoherence by interacting nuclear spins in a quantum dot
Wang Yao, Ren-Bao Liu, L. J. Sham
We present a quantum solution to the electron spin decoherence by a nuclear pair-correlation method for the electron-nuclear spin dynamics under a strong magnetic field and a tempe…
Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
M. V. Gurudev Dutt, Jun Cheng, Bo Li +9
We report on the coherent optical excitation of electron spin polarization in the ground state of charged GaAs quantum dots via an intermediate charged exciton (trion) state. Coher…
Ultrafast initialization and QND-readout of a spin qubit via control of nanodot-vacuum coupling
Ren-Bao Liu, Wang Yao, L. J. Sham
Ultrafast initialization enables fault-tolerant processing of quantum information while QND readout enables scalable quantum computation. By spatially assembling photon resonators…
Theory of Spin Orientation of Semiconductor Carriers at a Ferromagnetic Interface
J. P. McGuire, C. Ciuti, L. J. Sham
A quantum theory of the spin-dependent scattering of semiconductor electrons by a Schottky barrier at an interface with a ferromagnet is presented. The reflection of unpolarized no…