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Quantum error correction via codes over GF(4)

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4 Author(s)
Calderbank, A.R. ; AT&T Bell Labs., Murray Hill, NJ, USA ; Rains, E.M. ; Shor, P.W. ; Sloane, N.

The unreasonable effectiveness of quantum computing is founded on coherent quantum superposition or entanglement which allows a large number of calculations to be performed simultaneously. This coherence is lost as a quantum system interacts with its environment. In the present paper the problem of finding quantum-error-correcting codes is transformed into one of finding additive codes over the field GF(4) which are self-orthogonal with respect to a certain trace inner product. Many new codes and new bounds are presented, as well as a table of upper and lower bounds on such codes of length up to 30 qubits

Published in:
Information Theory. 1997. Proceedings., 1997 IEEE International Symposium on

Date of Conference: 29 Jun-4 Jul 1997

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