Avoiding disentanglement of multipartite entangled optical beams with a correlated noisy channel.

ABSTRACT: A quantum communication network can be constructed by distributing a multipartite entangled state to space-separated nodes. Entangled optical beams with highest flying speed and measurable brightness can be used as carriers to convey information in quantum communication networks. Losses and noises existing in real communication channels will reduce or even totally destroy entanglement. The phenomenon of disentanglement will result in the complete failure of quantum communication. Here, we present the experimental demonstrations on the disentanglement and the entanglement revival of tripartite entangled optical beams used in a quantum network. We experimentally demonstrate that symmetric tripartite entangled optical beams are robust in pure lossy but noiseless channels. In a noisy channel,

SUBMITTER: Deng X 

PROVIDER: S-EPMC5353719 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature