Author(s): Timothy M. Sweeney, Carey Phelps, and Hailin Wang

Abstract:

“We demonstrated optical spin control of a two-dimensional electron gas in a modulation-doped CdTe quantum well by driving a spin-flip Raman transition with a pair of phase-locked laser pulses. In contrast to single-pulse optical spin control, which features a fixed spin-rotation axis, manipulation of the initial relative phase of the pulse pair enables us to control the axis of the optical spin rotation. We show that the Raman pulse pair acts like an effective microwave field, mapping the relative optical phase onto the phase of the electron spin polarization and making possible ultrafast, all-optical, and full quantum control of the electron spins.”

Link to Publications Page

Publication: Physical Review B, (subscription required)

Issue/Year/DOI: Phys. Rev. B, Volume 84, Issue 7, (2011)
doi:10.1103/PhysRevB.84.075321