The quantum state tomography on an NMR system

被引：84

作者：

Lee, JS ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Yuseong Gu, Taejon 305701, South Korea

来源：

PHYSICS LETTERS A | 2002年 / 305卷 / 06期

关键词：

quantum state tomography; density operator reconstruction; nuclear magnetic resonance;

D O I：

10.1016/S0375-9601(02)01479-2

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The quantum state tomography on an NMR system is analyzed. The evolution of a given system by its Hamiltonian during the measurement can be understood as the inverse evolution of physical observables. In this way the NMR signal is expressed as a composition of the ensemble averages of observables, which facilitates the build-up of the procedure for estimating the density operator. The widely used procedure in which only single-qubit rotations are used to get information about the ensemble averages of a quorum of observables is devoted and the lower bound for the number of experiments is obtained. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：349 / 353

页数：5

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