论文标题
连续重新安装telecloning
Sequential Reattempt of Telecloning
论文作者
论文摘要
遥音协议的任务是将发件人拥有的任意量子发送给多个接收器。如果使用UNSHARP测量值，则没有在发件人的节点上进行铃铛测量，而是表明可以将共享状态回收以进行进一步的电信协议。具体而言，如果是单个发件人和两个接收器，则最大尝试数定义为通道在忠诚度中获得量子优势的最大回合数，事实证明，最佳和非最佳共享状态均为三个，而最大数量则减少到三个接收器的情况下。尽管对于任意数量的接收器来说，最初具有Quantum优势的遥控，但我们报告说，涉及单个发件人和三个以上的接收器的链球化的回收是不可能的。我们还将每个回合的最大可实现忠诚度与发件人与接收器之一之间的降低状态的两部分纠缠含量以及纠缠的一夫一妻制分数联系起来。
The task of a telecloning protocol is to send an arbitrary qubit possessed by a sender to multiple receivers. Instead of performing Bell measurement at the sender's node, if one applies unsharp measurement, we show that the shared state can be recycled for further telecloning protocol. Specifically, in case of a single sender and two receivers, the maximal attempting number, which is defined as the maximum number of rounds used by the channel to obtain quantum advantage in the fidelity, turns out to be three both for optimal and nonoptimal shared states for telecloning while the maximal number reduces to two in case of three receivers. Although the original telecloning with quantum advantage being possible for arbitrary numbers of receivers, we report that the recycling of resources is not possible in telecloning involving a single sender and more than three receivers, thereby demonstrating a no-go theorem. We also connect the maximal achievable fidelities in each round with the bipartite entanglement content of the reduced state between the sender and one of the receivers as well as with the monogamy score of entanglement.
