基于低品质腔的多光子纠缠纯化方案

Abstract

We propose a multipartite entanglement purification protocol(MEPP) for photonic entangled states using low-Q cavities.In our MEPP,the multipartite photonic entangled states can be purified with the two steps,i.e.,bit-flip error correction and phase-flip error correction.We can repeat these two steps to get a hight-fidelity entangled photonic states.By the single photon input-output process regarding the low-Q cavity containing an atom,the parity of photonic polarization state can be nondestructive detect.Different from other photonic MEPPs,Our MEPP are nondestructive and feasible in current experiment conditions.