基于金刚石NV色心的量子调控教学实验拓展  

Quantum control involved the NV center in diamond

作　　者：赵铮阳 周诗韵[1] ZHAO Zheng-yang;ZHOU Shi-yun(Department of physics,Fudan University,Shanghai 200433,China)

机构地区：[1]复旦大学物理学系,上海200433

出　　处：《物理实验》2022年第4期1-6,共6页Physics Experimentation

基　　金：教育部产学合作协同育人项目(No.202002123025)。

摘　　要：介绍了基于金刚石NV色心体系进行量子计算的基础内容,即量子比特的初始化、调控及读出.设计并拓展了拉比振荡相关教学内容:通过拉比振荡实验,了解微波与自旋的相互作用,熟悉量子态的初始化及读出方法;讨论了拉比振荡实验中微波频率的影响,从而引出测量共振频率的方法;通过连续波实验测量共振频率,并讨论了微波时长对测量结果的影响;改变磁铁位置,定性展示了NV色心的系综特性.The basic content of quantum computation based on diamond NV center system was introduced,including the initialization,control and reading of the quantum bits.The experiment contents related to the Rabi oscillation were designed and extended.The interaction between the microwave and the spins could be learned by means of Rabi oscillation,as well as the initialization and reading of the quantum states.The influence of microwave frequency was discussed,and thus the method to measure the resonance frequency was obtained.The measurement of resonance frequency was given by using continuous wave in the experiments,and the influence of microwave duration on the measurement results was also analyzed.The ensemble characteristics of the NV center system was revealed qualitatively by changing the positions of the magnet.

关 键 词：量子计算 NV色心 磁共振 拉比振荡 

分 类 号：O482.53[理学—固体物理]