  Proposed configurations for the implementation of graphene-based CNOT and
Toffoli gates working at room temperature are presented. These two logic gates,
essential for any quantum computing algorithm, involve ballistic Y junctions
for qubit implementation, quantum interference for qubit interaction and
oblique gates for optimizing the output, and can be fabricated using existing
nanolitographical techniques. The proposed configurations of CNOT and Toffoli
quantum logic gates are based on the very large mean-free-paths of carriers in
graphene at room temperature.
