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arXiv quant-ph/0402148quant-ph
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广义GHZ态与分布式量子计算

Generalized GHZ States and Distributed Quantum Computing

Anocha Yimsiriwattana, Samuel J. Lomonaco

摘要:

量子计算的一个关键问题是找到一条可行的技术路径,以创建可扩展的量子计算机。解决这个问题的一种可能方法是分布式计算,它提供了一种利用有限容量量子计算机网络的有效方法。在本文中,我们提出了两个基本的操作,猫纠缠和猫disentangler,这反过来又可以用来实现非本地操作,如非本地CNOT和量子隐形传态。我们还展示了如何建立一个纠缠对,并利用纠缠对有效地创建一个广义GHZ态。此外,我们提出的程序,使我们能够在一系列的非本地操作重用通道量子位。这些非局域操作的工作原理是,由猫纠缠器创建的类猫状态可以用于在多台计算机之间分配控制量子位。利用这一原理,我们展示了如何在许多情况下有效地实现非局部控制操作,包括某种酉变换的并行实现。最后,作为一个例子,我们提出了一个分布式版本的量子傅里叶变换。

英文摘要:

A key problem in quantum computing is finding a viable technological path toward the creation of a scalable quantum computer. One possible approach toward solving part of this problem is distributed computing, which provides an effective way of utilizing a network of limited capacity quantum computers. In this paper, we present two primitive operations, cat-entangler and cat-disentangler, which in turn can be used to implement non-local operations, e.g. non-local CNOT and quantum teleportation. We also show how to establish an entangled pair, and use entangled pairs to efficiently create a generalized GHZ state. Furthermore, we present procedures which allow us to reuse channel qubits in a sequence of non-local operations. These non-local operations work on the principle that a cat-like state, created by cat-entangler, can be used to distribute a control qubit among multiple computers. Using this principle, we show how to efficiently implement non-local control operations in many situation, including a parallel implementation of a certain kind of unitary transformation. Finally, as an example, we present a distributed version of the quantum Fourier transform.

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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