关键词: 量子通信, 概率隐形传态, 非最大化纠缠GHZ态, 多参数测量, 半量子通信

Abstract: Traditional quantum teleportation uses maximum entanglements as quantum channels. However, the maximum entanglements only exist in the ideal case. Studying quantum teleportation via non-maximized entangled channel, based on the non-maximized entangled GHZ state, a new scheme of controlled and probabilistic teleportation is proposed. By introducing the universal multi-parameter measurement, the parameters of the measurement bases can be adjusted according to the parameters of the quantum channel, so as to achieve the best success probability. The existence of quantum controller makes the scheme more flexible. This scheme can be extended to the semi-quantum situation where the receiver does not have enough quantum ability, which further expands the application scope of the probabilistic teleportation scheme.

Key words: quantum communication, probabilistic teleportation, non-maximized entangled GHZ state, multi-parameter measurement, semi-quantum communication