Quantum-information-processing architecture with endohedral fullerenes in a carbon nanotube

A potential quantum-information processor is proposed using an array of the endohedral fullerenes $^{15}\mathrm{N}@{\mathrm{C}}_{60}$ or $^{31}\mathrm{P}@{\mathrm{C}}_{60}$ contained in a single walled carbon nanotube (SWCNT). The qubits are encoded in the nuclear spins of the doped atoms, while the electronic spins are used for initialization and readout, as well as for two-qubit operations.