基于可调腔量子电动力学系统中多比特纠缠态的制备  

Generation of Multi-qubit Quantum Entanglment States in Tunable Circuit QED

作　　者：高媛[1] 杨名[1] 余龙宝[2] 

机构地区：[1]安徽大学物理与材料科学学院,安徽合肥230039 [2]合肥师范学院电子信息工程学院,安徽合肥230601

出　　处：《合肥师范学院学报》2016年第3期12-15,共4页Journal of Hefei Normal University

基　　金：合肥师范学院校级项目(2015JG03);安徽大学研究生创新项目(yqh100014)

摘　　要：量子纠缠态是量子信息处理和量子通信领域中的核心资源。在量子计算机的硬件研究中,超导系统具有较为突出的优势,本论文结合该系统最新的实验进展,提出了在可调腔量子电动力学系统中实现多比特量子纠缠态的制备方案,频率可调的超导腔与相位比特之间的耦合作用形成XY形式,通过调节腔场的频率依次与不同的比特一个接一个地共振作用,并控制合适的作用时间,将会便捷地实现纠缠态制备。基于该系统可控制强、相干性好、易扩展等优点,本方案在实验上具有一定的可行性和指导意义。Quantum entanglement is the central resource in the quantum information process and quantum communication. In the research of quantum computing hardware, superconducting circuit is one of the more prominent system. In the paper, based on the latest research, we propose a scheme to generate multi --qubit entanglement states in quantum electrodynamics （QED）. The coupling interaction which occurs between the frequency--tunable cavity and superconducting qubits, is the XY model. The cavity can interact with the superconducting qubits one by one with appropriate times. The entanglement states can be achieved more quickly and conveniently. The system has controllability, coherence, scalability, so the scheme has a certain experiments. many advantages, such as better feasibility and is instructive for the experiments.

关 键 词：量子电动力学 可调腔 超导系统 XY相互作用 量子纠缠态 

分 类 号：O413.2[理学—理论物理]