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arXiv quant-ph/0010033quant-ph
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仅通过测量进行量子计算

Quantum computing via measurements only

Robert Raussendorf, Hans J. Briegel

摘要:

量子计算机有望有效处理某些经典计算机技术难以处理的计算任务。虽然量子计算机的基本原理已经在实验室中得到了证明,但这些系统对大量量子位的可扩展性对于Shor算法等实际应用至关重要,这是一个巨大的挑战。目前的大多数实验都是为了实现选定粒子(量子比特)之间高度受控的相互作用序列,从而遵循量子计算机作为量子逻辑门(顺序)网络的模型。在这里,我们提出了一个不同的可扩展量子计算机模型。在我们的模型中,量子计算的整个资源最初以大量量子比特的特定纠缠态(所谓的簇态)的形式提供。然后,信息被写入到集群,处理,并读出从集群的单粒子测量。因此,团簇的纠缠态可以作为任何量子计算的通用基底。在任何具有量子伊辛型相互作用(在非常低的温度下)的系统中,都可以在晶格结构中的两态粒子之间有效地产生团簇态。

英文摘要:

A quantum computer promises efficient processing of certain computational tasks that are intractable with classical computer technology. While basic principles of a quantum computer have been demonstrated in the laboratory, scalability of these systems to a large number of qubits, essential for practical applications such as the Shor algorithm, represents a formidable challenge. Most of the current experiments are designed to implement sequences of highly controlled interactions between selected particles (qubits), thereby following models of a quantum computer as a (sequential) network of quantum logic gates. Here we propose a different model of a scalable quantum computer. In our model, the entire resource for the quantum computation is provided initially in form of a specific entangled state (a so-called cluster state) of a large number of qubits. Information is then written onto the cluster, processed, and read out form the cluster by one-particle measurements only. The entangled state of the cluster thus serves as a universal substrate for any quantum computation. Cluster states can be created efficiently in any system with a quantum Ising-type interaction (at very low temperatures) between two-state particles in a lattice configuration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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