Simulation of the four-body interaction in a nuclear magnetic resonance quantum information processor  

作　　者：LIU WenZhang ZHANG JingFu LONG GuiLu 

机构地区：[1]Key Laboratory for Atomic and Molecular NanoSciences and Department of Physics, Tsinghua University, Beijing 100084, China [2]Tsinghua National Laboratory for Information Science and Technology, Beijing 100084, China

出　　处：《Chinese Science Bulletin》2009年第22期4262-4265,共4页

基　　金：Supported by the National Natural Science Foundation of China (Grant Nos. 10775076, 10874098);National Basic Research Program of China (Grant Nos. 2006CB921106, 2009CB929402);Specialized Research Fund for the Doctoral Program of Education Ministry of China (Grant No. 20060003048)

摘　　要：The four-body interaction plays an important role in many-body systems, and it can exhibit interesting phase transition behaviors. In this letter, we report the experimental demonstration of a four-body interaction in a four-qubit nuclear magnetic resonance quantum information processor. The strongly modulating pulse is used to implement spin selective excitation. The results show a good agreement between theory and experiment.The four-body interaction plays an important role in many-body systems, and it can exhibit interesting phase transition behaviors. In this letter, we report the experimental demonstration of a four-body interaction in a four-qubit nuclear magnetic resonance quantum information processor. The strongly modulating pulse is used to implement spin selective excitation. The results show a good agreement between theory and experiment.

关 键 词：信息处理器 相互作用 核磁共振 量子位 模拟 多体系统 相变行为 选择激发 

分 类 号：O482.532[理学—固体物理] TP18[理学—物理]