%0 Journal Article
%T Three-Qubit Gate Realization Using Single Quantum Particle
%A Alexander R. Kessel
%A Vladimir L. Ermakov
%J Physics
%D 2000
%I arXiv
%R 10.1134/1.568340
%X Using virtual spin formalism it is shown that a quantum particle with eight energy levels can store three qubits. The formalism allows to realize a universal set of quantum gates. Feasible formalism implementation is suggested which uses nuclear spin-7/2 as a storage medium and radio frequency pulses as the gates. One pulse realization of all universal gates has been found, including three-qubit Toffoli gate.
%U http://arxiv.org/abs/quant-ph/0002016v1