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Remote preparation for single-photon state in two degrees of freedom with hyper-entangled states
Frontiers of Physics ( IF 7.5 ) Pub Date : 2021-03-30 , DOI: 10.1007/s11467-021-1059-8
Mei-Yu Wang , Fengli Yan , Ting Gao

Remote state preparation (RSP) provides a useful way of transferring quantum information between two distant nodes based on the previously shared entanglement. In this paper, we study RSP of an arbitrary single-photon state in two degrees of freedom (DoFs). Using hyper-entanglement as a shared resource, our first goal is to remotely prepare the single-photon state in polarization and frequency DoFs and the second one is to reconstruct the single-photon state in polarization and time-bin DoFs. In the RSP process, the sender will rotate the quantum state in each DoF of the photon according to the knowledge of the state to be communicated. By performing a projective measurement on the polarization of the sender’s photon, the original single-photon state in two DoFs can be remotely reconstructed at the receiver’s quantum systems. This work demonstrates a novel capability for longdistance quantum communication.



中文翻译:

具有超纠缠态的两个自由度的单光子状态的远程准备

远程状态准备(RSP)提供了一种基于先前共享的纠缠在两个遥远节点之间传输量子信息的有用方法。在本文中,我们研究了两个自由度(DoF)中任意单光子状态的RSP。使用超纠缠作为共享资源,我们的第一个目标是远程准备极化和频率自由度中的单光子状态,第二个目标是重构极化和时空DoF中的单光子状态。在RSP过程中,发送器将根据要通信的状态的知识旋转光子每个DoF中的量子状态。通过对发送者光子的极化进行投影测量,可以在接收者的量子系统处远程重建两个DoF中的原始单光子状态。

更新日期:2021-03-30
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