Simulation of general three-body interactions in a nuclear magnetic resonance ensemble quantum computer  

作　　者：LIU WenZhang ZHANG JingFu DENG ZhiWei LONG GuiLu 

机构地区：[1]Key Laboratory of 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 [3]Testing and Analytical Center,Beijing Normal University,Beijing 100875,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2008年第8期1089-1096,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：the National Natural Science Foundation of China (Grant Nos. 10374010 and 10325521) ;the National Basic Research Program of China (Grant No. 2006CB921106)

摘　　要：Three-body interaction plays an important role in many-body physics, and quantum computer is efficient in simulating many-body interactions. We have experimentally demonstrated the general three-body interactions in a three-qubit nuclear magnetic resonance ensemble quantum computer. Using a nuclear magnetic resonance computer we implemented general forms of three-body interactions including σ x 1 σ z 2 σ x 3 and σ x 1 σ z 2 σ y 3 The results show good agreement between theory and experiment. We have also given a concise and practical formula for a general n-body interaction in terms of one-and two-body interactions.Three-body interaction plays an important role in many-body physics,and quantum computer is efficient in simulating many-body interactions. We have experimentally demonstrated the general three-body interactions in a three-qubit nuclear magnetic resonance ensemble quantum computer. Using a nuclear magnetic resonance computer we implemented general forms of three-body interactions including σ 1x σ z2 σ x3 and σ 1x σ z2 σ y3 . The results show good agreement between theory and experiment. We have also given a concise and practical formula for a general n-body interaction in terms of one-and two-body interactions.

关 键 词：NUCLEAR magnetic RESONANCE QUANTUM COMPUTER general THREE-BODY interaction ENSEMBLE QUANTUM COMPUTER 

分 类 号：O482.532[理学—固体物理]