TY - JOUR AU - J. Cirac AU - R. Blatt AU - A. Parkins AU - Peter Zoller BT - Physical Review Letters DA - Jan-02-1993 DO - 10.1103/PhysRevLett.70.762 PY - 1993 SP - 762 EP - 765 T2 - Physical Review Letters TI - Preparation of Fock states by observation of quantum jumps in an ion trap VL - 70 SN - 0031-9007 ER -