A Robust Quantum Random Access Memory

Details A Robust Quantum Random Access Memory A Robust Quantum Random Access Memory

2012-01-11

arxiv.org/abs/1201.2250v1

Physics

Quantum Physics

5 pages, 3 figures

Scientific paper

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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