Non-adiabatic electron charge pumping in coupled semiconductor quantum dots

Details Non-adiabatic electron charge pumping in coupled semiconductor quantum dots Non-adiabatic electron charge pumping in coupled semiconductor quantum dots

2011-12-26

arxiv.org/abs/1112.5861v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures

Scientific paper

The possibility of non-adiabatic electron pumping in the system of three coupled quantum dots attached to the leads is discussed. We have found out that periodical changing of energy level position in the middle quantum dot results in non zero mean tunneling current appeared due to non-adiabatic non-equilibrium processes. The same principle can be used for fabrication of a new class of semiconductor electronic devices based on non-stationary non-equilibrium currents. As an example we propose a nanometer quantum emitter with non-stationary inverse level occupation achieved by electron pumping.

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