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arXiv 0709.0911quant-ph
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量子展开子的显式构造

An Explicit Construction of Quantum Expanders

Avraham Ben-Aroya, Oded Schwartz, Amnon Ta-Shma

摘要:

量子展开子是经典展开子的自然推广。这些物体是由本-阿罗亚、塔-什马和黑斯廷斯介绍和研究的。在这篇笔记中,我们将展示如何构造显式的,常数度的量子展开子。该结构本质上是经典的Zig-Zag扩展器结构,适用于量子扩展器。

英文摘要:

Quantum expanders are a natural generalization of classical expanders. These objects were introduced and studied by Ben-Aroya and Ta-Shma and by Hastings. In this note we show how to construct explicit, constant-degree quantum expanders. The construction is essentially the classical Zig-Zag expander construction, applied to quantum expanders.

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