Quantum Dot Cluster State Computing with Encoded Qubits

A class of architectures is advanced for cluster state quantum computation using quantum dots. These architectures include using single and multiple dots as logical qubits. Special attention is given to the supercoherent qubits introduced by Bacon, Brown, and Whaley [Phys. Rev. Lett. {\bf 87}, 247902 (2001)] for which we discuss the effects of various errors, and present means of error protection.