%0 Journal Article
%T Quantum Information Processing (QIP) and Realization Using Nuclear Magnetic Resonance<br>量子信息处理及其核磁共振实现（英文）
%A WEI Da-xiu
%A ZENG Xi-Zi
%A LIU Mai-Li
%A <br>魏达秀
%A 曾锡之
%A 刘买利
%J 中国科学院研究生院学报
%D 2007
%I 
%X This paper presents our theoretical and nuclear magnetic resonance(NMR) experimental work on several QIPs including quantum super dense coding(QSDC),quantum algorithms,quantum error correction,and decoherence-free subspace.The main contents are,(1) Using NMR technique,we realize two kinds of QSDC.The experimental results show that QSDC only needs to transfer(N-1) qubits during transmitting N bits classical information;(2) On NMR quantum computers,we realize three kinds of quantum algorithms that include four-qubit summing algorithm,four-qubit Deutsch-like algorithm and seven-qubit Deutsch-Jozsa algorithm;(3) We present a quantum error correction scheme based on quantum cloning.This scheme shows the relationship between quantum cloning and quantum error correction;(4) To avoid decoherence in quantum algorithms,we construct a decoherence-free subspace(DFS) by using multiple quantum coherences.The validity of this DFS is also experimentally verified on our NMR quantum computers.The DFS makes the three unaddressed protons in a CH_3 group distinguished in two-dimensional(2D) NMR.It can protect against more error operators.This idea may provide new insights into extending the number of qubits in the sense that it effectively utilizes the magnetically equivalent nuclei.
%K nuclear magnetic resonance (NMR)
%K quantum information processing
%K quantum computing
%K quantum algorithm<br>核磁共振
%K 量子信息处理
%K 量子计算机
%K 量子算法
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=B5EDD921F3D863E289B22F36E70174A7007B5F5E43D63598017D41BB67247657&cid=B47B31F6349F979B&jid=67CDFDECD959936E166E0F72DE972847&aid=2CBB77D9499A9E43&yid=A732AF04DDA03BB3&vid=B91E8C6D6FE990DB&iid=38B194292C032A66&sid=AFB2C35009D5D191&eid=87545994EC2C1F12&journal_id=1002-1175&journal_name=中国科学院研究生院学报&referenced_num=0&reference_num=35