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

摘要： 量子隐形传态大多都使用最大化纠缠态作为量子信道，但最大化纠缠资源只存在于理想情况下。研究了非最大化纠缠信道的量子隐形传态，基于非最大化纠缠GHZ态提出了一个新型的概率控制隐形传态方案。通过引入多参数通用测量，可以根据量子信道参数调整测量基参数，进而实现最佳的成功概率。加入了量子控制者，使方案具有更高的灵活性。该方案可以被扩展到接收者没有足够量子能力的半量子通信情况，进一步扩大了概率隐形传态的应用范围。

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