Volume 99, Number 2, July 2012
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||30 July 2012|
Querying a quasi-classical Oracle: One-bit function identification problem implemented in a single atom transistor
1 Department of Chemistry, B6c, University of Liege - B4000 Liege, Belgium, EU
2 Kavli Institute of Nanoscience, Delft University of Technology - Lorentzweg 1, 2628 CJ Delft, The Netherlands, EU
3 Centre for Quantum Computation and Communication Technology, School of Physics, University of New South Wales - Sydney, New South Wales 2052, Australia
Received: 22 April 2012
Accepted: 28 June 2012
We show that a single atom transistor (SAT) addressed by a pulsed gate voltage is a physical realization of an Oracle that can calculate the four one-bit Boolean functions, the logical output being encoded in a measurable current. The algorithm relies on the quasi-classical parallelism that arises from the linearity of the kinetic scheme used to describe incoherent electron transport through two levels of the SAT. We demonstrate that one of the four one-bit Boolean functions can be identified by a single current measurement. The generalization of the algorithm to n bit functions is also discussed.
PACS: 85.35.-p – Nanoelectronic devices / 73.22.Dj – Single particle states / 73.23.Hk – Coulomb blockade; single-electron tunneling
© EPLA, 2012
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