基于混态贝尔态的量子纠缠交换

摘要

We propose an entanglement swapping scheme in cavity QED via mixed states.In this paper,the mixed state is a mixed Bell-state,which is more practieal than pure one as quantum channel in quantum information processing.We solve analytically a master equation in the Lindblad form with(L2.z,L3,z)-type of noise in cavity QED.The fidelity and probability of these protocols are discussed.%本文提出一个用腔QED技术实现的混态纠缠交换方案.混态是一个混合的贝尔态,这在量子信息过程中比纯态作为量子通道更具有实际意义.我们(L2.z,L3.z)从噪声Lindblad主方程出发,给出了在腔QED系统密度矩阵解析表达式,讨论了纠缠交换的保真度和概率.