Resonant photon-assisted tunneling through a double quantum dot: An electron pump from spatial Rabi oscillations.
نویسندگان
چکیده
The time average of the fully nonlinear current through a double quantum dot, subject to an arbitrary combination of ac and dc voltages, is calculated exactly using the Keldysh nonequilibrium Green function technique. When driven on resonance, the system functions as an efficient electron pump due to Rabi oscillation between the dots. The pumping current is maximum when the coupling to the leads equals the Rabi frequency.
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عنوان ژورنال:
- Physical review letters
دوره 76 11 شماره
صفحات -
تاریخ انتشار 1996