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Optical quantum router with cross-phase modulation

基于交叉相位调制技术的光学量子路由器

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Abstract

The quantum router is a key part of a quantum network. How to design a fully quantum router is a dominant theme in the area of quantum communication. Based on the cross-phase modulation technique, we propose a scheme to realize an optical quantum router using the c-path operation for its basic operation. This router is a perfect, fully quantum router, and it is available for arbitrary (separated or entangled) input signals and covers all possible control modes (the general n-control-m mode). Moreover, this router protects target signals and preserves quantum features, such as coherent superposition and entanglement. This is a new and powerful feature when compared with classical routers. With the development of current experimental technology, our scheme is feasible.

概要

创新点

量子路由器是量子网络的核心部件, 我们基于光学交叉相位调制技术提出全量子路由器的设计方案. 这一路由器适用于任意的输入量子态(包括可分态、 纠缠态)和所有可能的控制模式(例如n-控制-m模式), 并且不会破坏目标信号, 可以保持其量子特性, 例如相干叠加性、 纠缠等. 因而这是一个完美的全量子路由器, 相比经典路由器, 展现出新的、 功能更强大的特性.

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Authors and Affiliations

  1. College of Computer Science and Technology, Huaqiao University (Xiamen), Xiamen, 361021, China

    YeWang Chen

  2. College of Information Science and Engineering, Huaqiao University (Xiamen), Xiamen, 361021, China

    Qing Lin

Authors
  1. YeWang Chen
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  2. Qing Lin
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Correspondence to YeWang Chen or Qing Lin.

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Chen, Y., Lin, Q. Optical quantum router with cross-phase modulation. Sci. China Inf. Sci. 57, 1–11 (2014). https://doi.org/10.1007/s11432-014-5217-2

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  • DOI: https://doi.org/10.1007/s11432-014-5217-2

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