Acoustoelectric current in submicron-separated quantum wires

Cunningham, J.; Pepper, M.; Talyanskii, V. I.; Ritchie, D. A.
April 2005
Applied Physics Letters;4/11/2005, Vol. 86 Issue 15, p152105
Academic Journal
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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