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arXiv 0910.0660quant-ph
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单向量子计算中的泛线性Bogoliubov变换

Universal linear Bogoliubov transformations through one-way quantum computation

Ryuji Ukai, Jun-ichi Yoshikawa, Noriaki Iwata, Peter van Loock, Akira Furusawa

摘要:

我们明确地展示了如何实现一个任意的线性酉Bogoliubov变换(LUBO)的多模量子态通过基于零拍的单向量子计算。任何LUBO都可以通过固定的、有限大小的、充分压缩的高斯簇状态来近似,该高斯簇状态允许实现分束器(以三模连接门的形式)和一般的单模LUBO。特别是,我们证明了一个线性的四模式集群状态是一个足够的资源为任意一个模式的LUBO。通过量子隐形传态,可以将任意输入量子态(包括非高斯态)有效地附着到团簇上。

英文摘要:

We show explicitly how to realize an arbitrary linear unitary Bogoliubov transformation (LUBO) on a multi-mode quantum state through homodyne-based one-way quantum computation. Any LUBO can be approximated by means of a fixed, finite-sized, sufficiently squeezed Gaussian cluster state that allows for the implementation of beam splitters (in form of three-mode connection gates) and general one-mode LUBOs. In particular, we demonstrate that a linear four-mode cluster state is a sufficient resource for an arbitrary one-mode LUBO. Arbitrary input quantum states including non-Gaussian states could be efficiently attached to the cluster through quantum teleportation.

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