Quantum computation over continuous variables
Quantum computation over continuous variables
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DOI：
10.1103/physrevlett.82.1784
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发表时间：
1999-02-22
影响因子：
8.6
通讯作者：
Braunstein, SL
中科院分区：
文献类型：
--
作者：
Lloyd, S;Braunstein, SL
本文给出了构造连续变量通用量子计算机的充要条件。作为一个例子，它展示了如何使用简单的线性器件，如分束器和移相器，以及压缩器和非线性器件，如克尔效应光纤和光腔中的原子，来构建用于计算电磁波幅度的通用量子计算机。这种装置原则上可以进行“量子浮点”计算。讨论了噪声、有限精度和误差修正等问题。
This paper provides necessary and sufficient conditions for constructing a universal quantum computer over continuous variables. As an example, it is shown how a universal quantum computer for the amplitudes of the electromagnetic held might be constructed using simple linear devices such as beam splitters and phase shifters, together with squeezers and nonlinear devices such as Kerr-effect fibers and atoms in optical cavities. Such a device could in principle perform "quantum floating point" computations. Problems involving noise, finite precision, and error correction are discussed.