论文标题
确定性的联合遥控状态制备，具有非最大值纠缠的通道
Deterministic joint remote state preparation with a non-maximally entangled channel
论文作者
论文摘要
理想的确定性量子通信任务需要最大的纠缠通道。现实情况是，由于各种偏压机制，最大的纠缠通道不可避免地会降解为非最大程度的纠缠，从而严重恶化了量子通信的性能。我们没有采用传统的纠缠净化或蒸馏来重建最大的纠缠渠道，而是使用直接退化的非最大程度的纠缠状态设计了一种新颖的确定性联合遥控状态准备方案。通过辅助Qudits的帮助，已经设计了一种通过非最大超大量子通道来确定性关节远程制备的协议。然后，我们将其概括为忠实地准备高维量子状态。无论共同的纠缠有多么弱，沟通的成功可能性在其存在后立即保持在100％。这项调查为构建实用量子通信网络提供了意识形态。
Ideal deterministic quantum communication tasks require maximally entangled channels. The reality is that the maximally entangled channel is inevitably degraded to a non-maximally entangled one because of various decoherence mechanisms, seriously deteriorating the performance of quantum communication. Instead of adopting traditional entanglement purification or distillation to rebuild maximally entangled channels, we have designed a novel deterministic joint remote state preparation scheme using the degenerated non-maximally entangled state directly. A protocol for deterministic joint remote preparation of a two-dimensional quantum state via a non-maximally hyperentangled quantum channel has been devised with the help of auxiliary qudits. Then we generalize it to prepare a high-dimensional quantum state faithfully. No matter how weak the shared entanglement is, the success probability of communication is maintained at 100% as soon as it exists. This investigation provides an ideology for the construction of practical quantum communication networks.
