Witnessing nonseparability of bipartite quantum operations
arXiv:1909.09066 · doi:10.1016/j.physleta.2021.127411
Abstract
We provide a method for witnessing nonseparability of quantum processes on shared systems, which uses the channel-state duality. The method uses a maximally entangled state as a resource. We show that using the resource provides significant advantage over the corresponding protocol for nonseparability detection without the resource.
v2: 5 pages, no figures. Further gates considered as examples