How big is a quantum computer?

S. Wallentowitz; I. A. Walmsley; J. H. Eberly

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arXiv · quant-ph/0009069

How big is a quantum computer?

S. Wallentowitz·I. A. Walmsley·J. H. Eberly

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Abstract

Accounting for resources is the central issue in computational efficiency. We point out physical constraints implicit in information readout that have been overlooked in classical computing. The basic particle-counting mode of read-out sets a lower bound on the resources needed to implement a quantum computer. As a consequence, computers based on classical waves are as efficient as those based on single quantum particles.

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S. Wallentowitz, I. A. Walmsley, J. H. Eberly. 2000-09-17. How big is a quantum computer?. https://arxiv.org/abs/quant-ph/0009069

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