Implementation of controlled multi-qudit operations for a solid-state quantum computer based on charge qudits
S. G. Schirmer, Andrew D. Greentree, Daniel K. L. Oi · arXiv (Cornell University) · 2003
We consider a mechanism to generate controllable qudit-qudit interactions in a charge-position paradigm for a quantum computer, through the use of auxiliary states. By controlling the tunneling rates onto these auxiliaries from the qudits proper, we can controllably switch the entangling operations. We consider a practical architecture in which to realize such a computer and examine the associated Hilbert space dimension.