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arXiv · 1902.01329

Fault tolerant resource estimation of quantum random-access memories

Olivia Di Matteo·Vlad Gheorghiu·Michele Mosca
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Abstract

Quantum random-access look-up of a string of classical bits is a necessary ingredient in several important quantum algorithms. In some cases, the cost of such quantum random-access memory (qRAM) is the limiting factor in the implementation of the algorithm. In this paper we study the cost of fault-tolerantly implementing a qRAM. We construct and analyze generic families of circuits that function as a qRAM, discuss opportunities for qubit-time tradeoffs, and estimate their resource costs when embedded in a surface code.

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Olivia Di Matteo, Vlad Gheorghiu, Michele Mosca. 2019-02-04. Fault tolerant resource estimation of quantum random-access memories. https://doi.org/10.1109/tqe.2020.2965803

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