SCHEME FOR IMPLEMENTING CONTROLLED QUANTUM TELEPORTATION IN QDS-CAVITY SYSTEM

摘要

In this article, we propose an experimental scheme for implementing quantum teleportation of tripartite GHZ-Like state under the control of the controller. Due to the entanglement produced by the interaction between quantum dots embedded in micro-cavities and a single photon, the controlled quantum teleportation scheme of tripartite GHZ-Like state encoded in the electron spins in quantum dots can be realized in terms of theory via the conditional Faraday rotation of the polarization of single photons, single photons detection, and electron spin orientation measurement. By choosing the appropriate Faraday rotation angle for the switchable microcavities, the success probability of controlled quantum teleportation can reach 1. The similar controlled quantum teleportation procedure discussed here can be generalized to the quantum teleportation of multipartite GHZ-Like state.