基于光子超流态的量子纠缠理论研究

项目名称： 基于光子超流态的量子纠缠理论研究

项目编号： No.11204088

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理学I

项目作者： 尹淼

作者单位： 华南理工大学

项目金额： 25万元

中文摘要： 量子纠缠作为量子信息处理过程中不可或缺的物理资源，是近年来人们关注的热点之一。由于量子纠缠极易受到环境的影响而遭到破坏，因此，如何制备、传输和存储高保真的量子纠缠态成为实现量子信息技术的关键问题。基于超流态无耗散传输以及不受外磁场干扰等物理特性，本课题中我们提出利用光子超流态来制备、传输以及存储量子纠缠态的想法，运用量子场论、量子光学理论方法探索光子超流态中量子纠缠的形成机理、演化特征及影响因素。主要内容包括：（1）研究非线性媒质中连续变量纠缠态的制备与传输特性；（2）探索非线性Fabry-Perot（F-P）腔中量子纠缠的演化特征及存储方法；（3）探讨基于非线性F-P腔-非线性光纤-非线性F-P腔耦合系统中量子纠缠的制备、量子态转移及量子网络等问题。本课题将对制备、传输和存储高保真的量子纠缠态提供新的思路，对实现量子网络以及其他量子信息处理过程提供新的理论依据。

中文关键词： 光子超流态；量子纠缠；衰减率；光子晶体；反常传输

英文摘要： Quantum entanglement, as an indispensable physical resource in quantum-information processing, has become one of the hotest topics in recent years.Owning to the fact that quantum entanglement is very fragile to environment and can easily be destroyed,therefore,how to prepare, transport, and reserve high fidelity quantum entangled states has become the key problem to realize quantum information technology. Based on the physical properties of superfluidity that it can transport without dissipation and can be free from interference from the external magnetic field, here, in this project, we propose an idea to prepare, transport, and reserve quantum entangled states by using photonic superfluidity. Theoretical methods in quantum field theory and quantum optics are used to explore the formation mechanism, evolution characteristics, and influence factors of quantum entanglement in photonic superfluidity.The main contents are: (1) investigating the preparation and transportation properties of continuous-variable entanglement in nonlinear medium, (2) exploring the evolution characteristics and storage method of quantum entanglement in a nonlinear Fabry-Perot(F-P) cavity, (3) discussing the preparation of quantum entanglement, quantum state transfer, quantum network and so on based on coupled systems formed by nonlinear

英文关键词： photon superfluid；quantum entanglement；decay rate；photonic crystal；anomalous transmission