Scattering theory of time-controlled charge transport in mesoscopic conductors
Thursday, 7 April 2011, 10:00
We present a theory  for a mesoscopic turnstile that produces spatially
separated streams of electrons and holes along edge states in the quantum
Hall regime. For a broad range of frequencies in the non-adiabatic regime
the turnstile operation is found to be ideal, producing one electron and
one hole per cycle. The accuracy of the turnstile operation is
characterized by the fluctuations of the transferred charge per cycle. The
fluctuations are found to be negligibly small in the ideal regime.
 F. Battista, P. Samuelsson, PRB 83, 125324 (2011).