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Overhead and noise threshold of fault-tolerant quantum error correction

Abstract:
Quantum error correction (QEC) may allow a precision ≪10-6 per logical operation to be attained in quantum computers. In order for this to be possible, QEC must be applied in a fault tolerant manner, where the QEC process is constructed so that it removes more noise than it generates when it is itself imperfect. This paper addresses the problem of estimating the amount of noise that can be tolerated, and quantifying the cost of the stability in terms of the required increase in the number of physical qubits in the computer.
Publication status:
Published

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Publisher copy:
10.1103/PhysRevA.68.042322

Authors


More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Journal:
PHYSICAL REVIEW A More from this journal
Volume:
68
Issue:
4
Publication date:
2003-10-01
DOI:
EISSN:
1094-1622
ISSN:
1050-2947
Language:
English
Pubs id:
pubs:7606
UUID:
uuid:29ed8584-baf7-4cc7-aeba-ee8b8f77f28b
Local pid:
pubs:7606
Source identifiers:
7606
Deposit date:
2012-12-19

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