一种在核磁共振量子信息处理中制备准纯态的简单方法。

A simple method for the preparation of pseudopure states in nuclear magnetic resonance quantum information processing.

作者信息

Fung B M, Ermakov Vladimir L

机构信息

Department of Chemistry and Biochemistry, University of Oklahoma, Norman, OK 73019-3051, USA.

出版信息

J Chem Phys. 2004 Nov 1;121(17):8410-4. doi: 10.1063/1.1792594.

DOI:10.1063/1.1792594

PMID:15511162

Abstract

The use of nuclear magnetic resonance (NMR) to carry out quantum information processing (QIP) often requires the preparation, transformation, and detection of pseudopure states. In our previous work, it was shown that the use of pairs of pseudopure states (POPS) as a basis for QIP is very convenient because of the simplicity in experimental execution. It is now further demonstrated that the product of the NMR spectra corresponding to two sets of POPS that share a common pseudopure state has the same peak frequencies as those of the common (single) pseudopure state. Examples of applying two different quantum logic gates to a 5-qubit system are given.

摘要

利用核磁共振（NMR）进行量子信息处理（QIP）通常需要制备、变换和检测伪纯态。在我们之前的工作中，已经表明将伪纯态对（POPS）用作QIP的基础非常方便，因为实验执行简单。现在进一步证明，对应于两组共享一个共同伪纯态的POPS的NMR谱的乘积具有与共同（单个）伪纯态相同的峰值频率。给出了将两个不同量子逻辑门应用于一个5量子比特系统的示例。