Quantum Computers and Dissipation
Quantum Physics
2015-06-26 v1
Abstract
We analyse dissipation in quantum computation and its destructive impact on efficiency of quantum algorithms. Using a general model of decoherence, we study the time evolution of a quantum register of arbitrary length coupled with an environment of arbitrary coherence length. We discuss relations between decoherence and computational complexity and show that the quantum factorization algorithm must be modified in order to be regarded as efficient and realistic.
Cite
@article{arxiv.quant-ph/9702001,
title = {Quantum Computers and Dissipation},
author = {G. Massimo Palma and Kalle-Antti Suominen and Artur K. Ekert},
journal= {arXiv preprint arXiv:quant-ph/9702001},
year = {2015}
}
Comments
20 pages, Latex, 7 Postscript figures