摘要
We introduce the double-Hamiltonian evolution technique approach to investigate the unconventional geometric quantum logical gate with dissipation under the model of many identical three-level atoms in a cavity~ driven by a classical fieM. Our concrete calculation is made for the case of two atoms for the large-detuning interaction of the atoms with the cavity mode. The main advantage of our scheme is of eliminating the photon flutuation in the cavity mode during the gating. The corresponding analytical results will be helpful for experimental realization of speed geometric quantum logical gate in real cavities.
基金
Supported by the National Natural Science Foundation of China under Grant Nos.10774042,10774163,and 11074070
the Natural Science Foundation of Hunan Province under Grant No.09JJ3121
the Key Project of Science and Technology of Hunan Province under Grant No.2010FJ2005
