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Proceedings Paper

Decoherence bounds on the capabilities of cold trapped ion quantum computers
Author(s): Daniel F.V. James; Richard J. Hughes; Emanuel H. Knill; Raymond Laflamme; Albert G. Petschek
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Paper Abstract

Using simple physical arguments we investigate the capabilities of a quantum computer based on cold trapped ions of the type recently proposed by Cirac and Zoller. From the limitations imposed on such a device by decoherence due to spontaneous decay, laser phase coherence times, ion heating and other possible sources of error, we derive bounds on the number of laser interactions and on the number of ions that may be used. As a quantitative measure of the possible performance of these devices, the largest number which may be factored using Shor's quantum factoring algorithm is determined for a variety of species of ion.

Paper Details

Date Published: 1 July 1997
PDF: 9 pages
Proc. SPIE 3076, Photonic Quantum Computing, (1 July 1997); doi: 10.1117/12.277660
Show Author Affiliations
Daniel F.V. James, Los Alamos National Lab. (United States)
Richard J. Hughes, Los Alamos National Lab. (United States)
Emanuel H. Knill, Los Alamos National Lab. (United States)
Raymond Laflamme, Los Alamos National Lab. (United States)
Albert G. Petschek, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 3076:
Photonic Quantum Computing
Steven P. Hotaling; Andrew R. Pirich, Editor(s)

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