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APS » Journals » Phys. Rev. Lett. » Volume 98 » Issue 2
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Phys. Rev. Lett. 98, 020501 (2007) [4 pages]

Effective Fault-Tolerant Quantum Computation with Slow Measurements

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David P. DiVincenzo1 and Panos Aliferis2
1IBM Research Division, T. J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598, USA
2Institute for Quantum Information, California Institute of Technology, Pasadena, California 91125, USA

Received 3 August 2006; published 9 January 2007

How important is fast measurement for fault-tolerant quantum computation? Using a combination of existing and new ideas, we argue that measurement times as long as even 1000 gate times or more have a very minimal effect on the quantum accuracy threshold. This shows that slow measurement, which appears to be unavoidable in many implementations of quantum computing, poses no essential obstacle to scalability.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.020501
DOI:
10.1103/PhysRevLett.98.020501
PACS:
03.67.Pp, 03.67.Lx, 06.20.Dk
 
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