Generation of arbitrary four-atom entangled decoherence-free states

Abstract

Generation of arbitrary four-atom entangled decoherence-free states *Ji Xin(计 新) a)b) † , Lü Tian-Quan(吕天全) a) , and Zhang Shou(张 寿) a)b) ‡ a) Center for the Condensed-

Generation of steady four-atom decoherence-free states via quantum-jump-based feedback

“…Recent studies show that the decoherence-free states were considered as the key solution to the decoherence problem. [24][25][26][27] So much attention has been focused on the generation of decoherence-free states in the context of cavity QED. [28][29][30] In 2000, Beige et al proposed a scheme for generating decoherence-free states with the help of weak laser pulses, using the high decay rate of the cavity field and strong coupling between the atoms and the resonator mode.…”