Room temperature CNOT operation in a diluted magnetic semiconductor quantum dot

Abstract

Population evolution in a magnetic impurity doped semiconductor quantum dot has been studied by applying a sequence of pulses of chosen pulse area. By optical excitation mechanism, the population in (J_z=+3/2), heavy hole state of valence band is carried over to (J_z=-3/2), valance band state, via the (J=+1/2) conduction band states. The injected microwaves entangle conduction band states. This arrangement is successfully employed to ascertain quantum CNOT operation, and the calculation predicts maximum fidelity of 80\% for the CNOT operation.