TY - JOUR AU - Knill, Emanuel AU - Somma, Rolando AU - Barnum, Howard AU - Ortiz, Gerardo C2 - Physical Review Letters DA - 2006-01-04 00:01:00 LA - en PB - Physical Review Letters PY - 2006 TI - Efficient solvability of Hamiltonians and limits on the power of some quantum computational models ER -