Elementary quantum dot gates for single-electron computing
Krasheninnikov A.V., Openov L.A.
A new approach to realisation of particular logical functions in quantum dot gates for single-electron computing is proposed. It is shown that placing a gate into a uniform external magnetic field allows one to construct gates with 1) symmetric physical truth tables and 2) large (in some cases close to saturated) absolute magnitude of the average spin at output dots. Thus, two serious obstacles are removed which otherwise could present a problem in fabrication of a set of coupled quantum dot gates. PACS: 73.20.Dx, 84.30.Bv, 85.30.Vw