Amplification and passing through the barrier of the exciton condensed phase pulse in double quantum wells

O. I. Dmytruk; V. I. Sugakov

doi:10.1016/j.physb.2013.11.055

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arXiv · 1309.1297

Amplification and passing through the barrier of the exciton condensed phase pulse in double quantum wells

O. I. Dmytruk·V. I. Sugakov

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Abstract

The peculiarities and the possibility of a control of exciton condensed pulse movement in semiconductor double quantum well under the slot in the metal electrode are studied. The condensed phase is considered phenomenologically with the free energy in Landau-Ginzburg form taking into account the finite value of the exciton lifetime. It was shown that the exciton condensed phase pulse in the presence of an external linear potential moves along the slot direction with a constant value of a maximum density during exciton lifetime, while the exciton gas phase pulse is blurred. The penetration of the exciton condensed phase pulse through the barrier and its stopping by the barrier are studied. Also, it was shown that the exciton pulse in the condensedphase can be amplified and recovered after damping by imposing an additional laser pulse. Solutions for the system of excitons in double quantum well under the slot in the electrode under steady-state irradiation in the form of bright and dark autosolitons were found.

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O. I. Dmytruk, V. I. Sugakov. 2013-09-05. Amplification and passing through the barrier of the exciton condensed phase pulse in double quantum wells. https://doi.org/10.1016/j.physb.2013.11.055

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