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arXiv · 1201.2250

A Robust Quantum Random Access Memory

Fang-Yu Hong·Yang Xiang·Zhi-Yan Zhu·Li-zhen Jiang·Liang-neng Wu
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Abstract

A "bucket brigade" architecture for a quantum random memory of $N=2^n$ memory cells needs $n(n+5)/2$ times of quantum manipulation on control circuit nodes per memory call. Here we propose a scheme, in which only average $n/2$ times manipulation is required to accomplish a memory call. This scheme may significantly decrease the time spent on a memory call and the average overall error rate per memory call. A physical implementation scheme for storing an arbitrary state in a selected memory cell followed by reading it out is discussed.

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Fang-Yu Hong, Yang Xiang, Zhi-Yan Zhu, Li-zhen Jiang, Liang-neng Wu. 2012-01-11. A Robust Quantum Random Access Memory. https://doi.org/10.1103/physreva.86.010306

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