| 摘要: |
| EPR态作为最基本的量子纠缠态，在量子隐形传态中起着重要作用.研究适应任意类型EPR通道的单量子比特隐形传送通用线路，并推广到任意N比特量子隐形传送通用线路.首先设计出4种EPR态，分别作为量子通道的单比特量子隐形传态，通过分析EPR量子通道与量子操作门之间的关系，设计一种单比特通用线路；然后，设计两比特的标准量子隐形传态线路，并用Mathematica进行仿真验证线路的正确性，再把它推广到N比特量子隐形传送线路；最后，将单量子比特通用线路与N比特量子隐形传送线路进行融合，最终设计出任意N比特量子隐形传送通用线路.N粒子量子比特通用线路通过信息接受者进行带参数的幺正变换，其中，参数由制备出的EPR对类型确定，解决了因EPR制备中心出错导致的信息传送失败问题. |
| 关键词: 量子隐形传态 通用线路 EPR态 纠缠态 量子通道 |
| DOI：10.13328/j.cnki.jos.005672 |
| 分类号:TP301 |
| 基金项目:国家自然科学基金（61762019，61462001） |
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| Universal Circuits for Quantum Teleportation |
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ZHANG Guo-Shuai1, XU Dao-Yun2
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1.College of Mathematics and Statistics, Guizhou University, Guiyang 550025, China;2.College of Computer Science and Technology, Guizhou University, Guiyang 550025, China
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| Abstract: |
| EPR state as the most basic quantum entangled state plays an important role in quantum teleportation. In this work, the universal single-qubit quantum teleportation adapted to any type of EPR channel is studied and generalized to universal N-qubit quantum teleportation. In the single-bit quantum teleportation mode with four kinds of EPR states as quantum channels respectively, design single-bit universal circuits by analyzing the relationship between the EPR and the quantum gate, then design a two-bit standard quantum teleportation circuit and use Mathematica to verify the correctness of the circuit, and then generalize it to an N-bit quantum teleportation circuit, the next step, the single-qubit universal circuit and the N-qubit quantum teleportation circuit are implemented for fusion, finally any N-bit quantum teleportation universal circuit is designed. The universal circuits for N-particle quantum bits perform unitary transformation with parameters by the recipient of the information, where the parameters are determined by the type of EPR prepared, which solves the problem of information transmission failure due to an error in the EPR preparation center. |
| Key words: quantum teleportation universal circuit EPR state entangled state quantum channel |
