Physics – Quantum Physics
Scientific paper
2001-12-26
The Journal of Chemical Physics, 117, 3310 (2002)
Physics
Quantum Physics
10 pages and 3 figures
Scientific paper
Compared with classical search algorithms, Grover quantum algorithm [ Phys. Rev. Lett., 79, 325(1997)] achieves quadratic speedup and Bruschweiler hybrid quantum algorithm [Phys. Rev. Lett., 85, 4815(2000)] achieves an exponential speedup. In this paper, we report the experimental realization of the Bruschweiler$ algorithm in a 3-qubit NMR 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.
Long Gui Lu
Sun Yang
Xiao Li
Yan Hai-Yang
No associations
LandOfFree
Experimental Realization of Brüschweiler's exponentially fast search algorithm in a homo-nuclear system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Experimental Realization of Brüschweiler's exponentially fast search algorithm in a homo-nuclear system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Experimental Realization of Brüschweiler's exponentially fast search algorithm in a homo-nuclear system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-509279