QUANTUM COMPUTATION AND SPIN PHYSICS

A brief review is given of the physical implementation of quantum comp utation within spin systems or other two-state quantum systems. The im portance of the controlled-NOT or quantum XOR gate as the fundamental primitive operation of quantum logic is emphasized. Recent development s in the use of quantum entanglement to build error-robust quantum sta tes, and the simplest protocol for quantum error correction, an discus sed. (C) 1997 American Institute of Physics.