Dissipative decoherence in the Grover algorithm

被引：0
|
作者：
O. V. Zhirov
D. L. Shepelyansky
机构：
[1] Budker Institute of Nuclear Physics,
[2] Laboratoire de Physique Théorique,undefined
[3] UMR 5152 du CNRS,undefined
来源：
The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics | 2006年 / 38卷
关键词：
03.67.Lx Quantum Computation; 03.65.Yz Decoherence; open systems; quantum statistical methods; 24.10.Cn Many-body theory; 11.40.+s Search; 13.10.+n Effects of noise and imperfections; 11.50.+m Quantum maps, quantum chaos;
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摘要：
Using the methods of quantum trajectories we study effects of dissipative decoherence on the accuracy of the Grover quantum search algorithm. The dependence on the number of qubits and dissipation rate are determined and tested numerically with up to 16 qubits. As a result, our numerical and analytical studies give the universal law for decay of fidelity and probability of searched state which are induced by dissipative decoherence effects. This law is in agreement with the results obtained previously for quantum chaos algorithms.
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页码：405 / 408
页数：3
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