基于特殊纯态的受控隐形传态控制力分析
首发时间:2017-05-12
摘要:研究了含参数三粒子纯态为信道的受控隐形传态, 以无控保真度和最小控制力两种方法分析了协议中控制方的权威作用. 针对单参数三粒子纯态, 结论表明此类量子态不适宜用作任意单粒子受控隐形传态的量子信道. 但是, 对于满足一定条件的单粒子量子态, 存在合适的单参数量子态信道, 甚至是任意的单参数量子态信道, 能够保证控制方的权威. 对于含多参数三粒子纯态, 得到了控制力有意义时的参数条件, 并给出了满足条件的几类特殊三粒子纯态表达式.
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Control power of the controlled teleportation with peculiar pure states
Abstract:The control power of controlled teleportation with three-qubit pure states which have parameters are mainly studied. Using two methods: non-conditioned fidelity and minimal control power, the authority of controller is analyzed. It is verified that the single-parameter three-qubit pure states used as quantum channel are not appropriate. However, when the single particle qubit is limited in a certain scope, there exist some single-parameter three-qubit pure states, even any single-parameter three-qubit pure states are candidates for quantum channel. For multi-parameter three-qubit pure states, we obtain the range of parameters which makes control power be meaningful. At last, some expressions of three-qubit pure states satisfying some conditions are derived.
Keywords: controlled teleportation control power fidelity
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No.4732795129741149****
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