We propose a novel technique for the creation of entangled pairs of two-state systems based upon adiabatic passage induced by a suitably crafted time-dependent external field.
We describe a novel technique for preparing the multiparticle W class states,which are based on adiabatic passage induced a suitably crafted time-dependent external field.We have derived the interaction Hamiltonian,and the adiabatic and diabatic evolution conditions of driving the system of n-spin-12 particles from initial unentangled state to the W class state.In addition,we show the diagram of the energies evolution and the populations of target state of transferring the system of three spin-12 particles from initial unentangled state to target entangled state of Wtype.