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题名: Experimental realization of the Bruschweiler
作者: Xiao, L ;  Long, GL ;  Yan, HY ;  Sun, Y
刊名: JOURNAL OF CHEMICAL PHYSICS
出版日期: 2002
卷号: 117, 期号:7, 页码:3310-3315
关键词: NUCLEAR-MAGNETIC-RESONANCE ;  SPIN LIOUVILLE SPACE ;  QUANTUM COMPUTATION ;  NMR-SPECTROSCOPY ;  LOGIC ;  GATES
学科分类: Physics
通讯作者: Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
部门归属: Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China; Key Lab Quantum Informat & Measurements, Beijing 100084, Peoples R China; Tsing Hua Univ, Ctr Atom & Mol Nanosci, Beijing 100084, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100084, Peoples R China; Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA
英文摘要: Compared with classical search algorithms, Grover quantum algorithm [L. K. Grover, Phys. Rev. Lett. 79, 325 (1997)] achieves quadratic speedup and Bruschweiler hybrid quantum algorithm [R. Bruschweiler, Phys. Rev. Lett. 85, 4815 (2000)] achieves an exponential speedup. In this paper, we report the experimental realization of the Bruschweiler algorithm in a three-qubit nuclear magnetic resonance ensemble system. The pulse sequences are used for the algorithms and the measurement method used here is improved on that used by Bruschweiler, namely, instead of quantitatively measuring the spin projection of the ancilla bit, we utilize the shape of the ancilla bit spectrum. By simply judging the downwardness or upwardness of the corresponding peaks in an ancilla bit spectrum, the bit value of the marked state can be read out, especially the geometric nature of this read-out can make the results more robust against errors. (C) 2002 American Institute of Physics.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13462
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Xiao, L,Long, GL,Yan, HY,et al. Experimental realization of the Bruschweiler[J]. JOURNAL OF CHEMICAL PHYSICS,2002,117(7):3310-3315.
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