论文标题
部分可观测时空混沌系统的无模型预测
Optimal input states for quantifying the performance of continuous-variable unidirectional and bidirectional teleportation
论文作者
论文摘要
连续变量（CV）传送是量子信息科学中的基础协议。已经设计了许多实验来模拟在现实条件下理想的传送。在本文中，我们详细介绍了一种分析方法，用于确定最佳输入状态，以量化简历单向和双向传送的性能。我们考虑的量化性能的指标是理想传送与其实验实现之间的能量受限的通道保真度，而与此同时，我们的重点是确定将理想过程与实验过程区分开的最佳输入状态。我们证明，在某些能量限制下，单向和双向的最佳输入状态，传送是双孔状态的有限纠缠叠加，使能量约束饱和。此外，我们还证明，在相同的约束下，最佳状态是独特的。也就是说，没有其他最佳有限有限的纠结叠加。
Continuous-variable (CV) teleportation is a foundational protocol in quantum information science. A number of experiments have been designed to simulate ideal teleportation under realistic conditions. In this paper, we detail an analytical approach for determining optimal input states for quantifying the performance of CV unidirectional and bidirectional teleportation. The metric that we consider for quantifying performance is the energy-constrained channel fidelity between ideal teleportation and its experimental implementation, and along with this, our focus is on determining optimal input states for distinguishing the ideal process from the experimental one. We prove that, under certain energy constraints, the optimal input state in unidirectional, as well as bidirectional, teleportation is a finite entangled superposition of twin-Fock states saturating the energy constraint. Moreover, we also prove that, under the same constraints, the optimal states are unique; that is, there is no other optimal finite entangled superposition of twin-Fock states.
