A two-dimensional quantum system with anyonic excitations can be considered as a quantum computer. Unitary transformations can be performed by moving the excitations around each other. Measurements can be performed by joining excitations in pairs and observing the result of fusion. Such computation is fault-tolerant by its physical nature.
Annals of Physics
- Pub Date:
- January 2003
- Quantum Physics;
- Condensed Matter - Mesoscale and Nanoscale Physics;
- High Energy Physics - Theory
- 27 pages, Latex2e, uses amssymb.sty, 13 Postscript figures