Error avoiding quantum codes and dynamical stabilization of Grover's algorithm

Dynamical stabilization properties of error avoiding quantum codes are inve stigated beyond the perturbative regime. As an example Grover's search algo rithm and its behaviour under a particular class of coherent errors are stu died. Numerical examples which demonstrate that error avoiding quantum code s may be capable of stabilizing quantum algorithms well beyond the regime f or which they were designed originally are presented.