Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-05-26
H. Flayac, D. D. Solnyshkov, and G. Malpuech, Phys. Rev. B 84, 125314 (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
9 Pages, 6 Figures, submitted to Phys. Rev. B
Scientific paper
10.1103/PhysRevB.84.125314
We analyze theoretically the spin dynamics of exciton-polaritons and photons during their Bloch oscillations in a one-dimensional microwire. The wire geometry induces an energy splitting between the longitudinal and transverse electric polarized eigenmodes. We show analytically that a synchronized regime between the Bloch oscillations in space and the precession of the pseudospin can be achieved. This synchronization results in the formation of a THz alternating spin current which can be extracted out of the confinement region by the Landau-Zener tunneling towards the second allowed miniband. Finally we show how the spin signal can be maintained despite of the lifetime of the particles for the case of exciton-polaritons both in a resonant and non resonant pumping schemes. The structure therefore acts as a Spin-optronic device able to convert the polarization and emit spin polarized pulses.
Flayac Hugo
Malpuech Guillaume
Solnyshkov Dmitry
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