Optically and electrically controlled polariton spin transistor

Details Optically and electrically controlled polariton spin transistor Optically and electrically controlled polariton spin transistor

2010-07-21

arxiv.org/abs/1007.3665v1

Phys. Rev. B 82, 153303 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, submitted to Phys. Rev. B as brief report

Scientific paper

We propose two schemes of a novel spin-optronic device, optical analog of Datta and Das spin transistor for the electrons. The role of ferromagnetic contacts is played by one-dimensional polariton channels with strong TE-TM splitting. A symmetric 2D trap plays a role of the non-magnetic active region. The rotation of the polarization of the pulse in this region can be achieved either due to its interaction with a spatially confined polariton condensate created resonantly by a circular polarized laser, either due to the splitting between the two linear polarizations of the excitons, controlled electrically by use of metallic gate.

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