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arXiv quant-ph/9910075quant-ph
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一种三量子比特搜索算法的实现

Implementation of a three-quantum-bit search algorithm

Lieven M. K. Vandersypen, Matthias Steffen, Mark H. Sherwood, Costantino S. Yannoni, Gregory Breyta, Isaac L. Chuang

摘要:

我们报告的实验实现Grover的量子搜索算法的量子计算机与三个量子比特。计算机由$^{13}$ C标记的CHFBr $_2$分子组成,其中三个弱耦合自旋1/2核的行为就像比特,并使用磁共振技术进行初始化、操作和读出。这种量子计算是通过引入两种技术而成为可能的,这两种技术显著地降低了实验的复杂性,并且通过消除先前限制了量子门的总可能数量的系统误差的令人惊讶的程度而成为可能。

英文摘要:

We report the experimental implementation of Grover's quantum search algorithm on a quantum computer with three quantum bits. The computer consists of molecules of $^{13}$C-labeled CHFBr$_2$, in which the three weakly coupled spin-1/2 nuclei behave as the bits and are initialized, manipulated, and read out using magnetic resonance techniques. This quantum computation is made possible by the introduction of two techniques which significantly reduce the complexity of the experiment and by the surprising degree of cancellation of systematic errors which have previously limited the total possible number of quantum gates.

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