Dressed-state scheme for a fast CNOT gate

A dressed-state scheme, which aims to speed up the adiabatic population transfer, is applied for constructing a fast controlled-not (CNOT) gate in a cavity quantum electrodynamics system. Numerical simulations indicate that the average fidelity for constructing the CNOT gate is quite high and the gate operation time is relatively short. Moreover, the effects of the atomic spontaneous emissions and the photon leakages from the system on the average fidelity are discussed and the results show the scheme is robust against decoherence.