Engineering W-type steady states for three atoms via dissipation in an optical cavity
Xinyu Chen, Li-Tuo Shen, Zhen‐Biao Yang, Huai‐Zhi Wu, Meifeng Chen · Journal of the Optical Society of America B · 2012
We propose a scheme for dissipative preparation of W-type entangled steady states of three atoms trapped in an optical cavity. The scheme is based on the competition between the decay processes into and out of the target state. By suitable choice of system parameters, we resolve the whole evolution process and employ the effective operator formalism to engineer four independent decay processes so that the target state becomes the stationary state of the quantum system. The scheme requires neither the preparation of definite initial states nor precise control of system parameters and preparation time.