Jiao Xian-Fang, Zhou Ping, Lv Shu-Xin, Wang Zhi-Yong
College of Science, Guangxi University for Nationalities, Nanning, 530006, People's Republic of China.
Key lab of quantum information and quantum optics, Guangxi University for Nationalities, Nanning, 530006, People's Republic of China.
Sci Rep. 2019 Mar 20;9(1):4663. doi: 10.1038/s41598-018-37159-5.
Linear-optical-based quantum information processing has attached much attention since photon is an ideal medium for transmitting quantum information remotely. Until now, there are some important works in quantum state remote preparation, the method for reconstructing quantum state deterministically via linear optics. However, most of the methods are protocols to prepare single-qubit states remotely via linear-optical elements. In this article, we investigate the methods to prepare two-qubit hybrid states remotely. We present a deterministic remote state preparation scheme for an arbitrary two-qubit hybrid state via a hyperentangled Bell state, resorting to linear-optical elements only. The sender rotates the spatial-mode state and polarization state of the hyperentangled photon respectively in accordance with his knowledge of the two-qubit hybrid state, and the receiver can reconstruct the original two-qubit hybrid state by applying appropriate recovery operations. Moreover, we discuss the remote state preparation scheme for the two-qubit hybrid state via partially hyperentangled Bell state.
由于光子是远程传输量子信息的理想媒介，基于线性光学的量子信息处理备受关注。到目前为止，在量子态远程制备方面已有一些重要成果，即通过线性光学确定性地重构量子态的方法。然而，大多数方法都是通过线性光学元件远程制备单量子比特态的协议。在本文中，我们研究远程制备两量子比特混合态的方法。我们提出了一种仅借助线性光学元件，通过超纠缠贝尔态确定性地远程制备任意两量子比特混合态的方案。发送者根据其对两量子比特混合态的了解，分别旋转超纠缠光子的空间模式态和偏振态，而接收者可以通过应用适当的恢复操作来重构原始的两量子比特混合态。此外，我们还讨论了通过部分超纠缠贝尔态远程制备两量子比特混合态的方案。
