Generation of W state by combining adiabatic passage and quantum Zeno techniques

Abstract

We propose a scheme to prepare W state for three atoms in a cavity via adiabatic passage and quantum Zeno dynamics. Appropriate Rabi frequencies of the classical fields are selected to realize the present scheme. Numerical analysis is showed, which indicates that the scheme is robust against the floating of the pulse delay and laser intensity, and the atomic spontaneous radiation and the cavity decay are efficiently suppressed by engineering adiabatic passage. Moreover, the scheme is more achievable in experiment than other existing schemes. Based on the current experimental technology, this scheme for generation of high-fidelity W state for three atoms can be achieved.