We measure acoustoelectric current in two submicron-separated quasi-one-dimensional wires formed in an AlGaAs∕GaAs heterostructure. We show that independent control of acoustoelectric current in both wires can be achieved with a suitably chosen geometry of Schottky gates. The implications of the results on two proposed uses of single-electron acoustoelectric current flow are discussed: a single-photon source and an acoustoelectrically driven quantum computer.
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Cunningham et al. (2005) studied this question.
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