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Experimental realization of the Bruschweiler
Xiao, L; Long, GL; Yan, HY; Sun, Y; Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
2002
发表期刊JOURNAL OF CHEMICAL PHYSICS
ISSN0021-9606
卷号117期号:7页码:3310-3315
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.
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
关键词Nuclear-magnetic-resonance Spin Liouville Space Quantum Computation Nmr-spectroscopy Logic Gates
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13462
专题理论物理所SCI论文
通讯作者Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China.
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GB/T 7714
Xiao, L,Long, GL,Yan, HY,et al. Experimental realization of the Bruschweiler[J]. JOURNAL OF CHEMICAL PHYSICS,2002,117(7):3310-3315.
APA Xiao, L,Long, GL,Yan, HY,Sun, Y,&Long, GL , Tsing Hua Univ, Dept Phys, Beijing 100084, Peoples R China..(2002).Experimental realization of the Bruschweiler.JOURNAL OF CHEMICAL PHYSICS,117(7),3310-3315.
MLA Xiao, L,et al."Experimental realization of the Bruschweiler".JOURNAL OF CHEMICAL PHYSICS 117.7(2002):3310-3315.
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