This article is cited in 2 papers

QUANTUM INFORMATION SCIENCE

A small error-correction code for protecting three-qubit quantum information

Chui-Ping Yang^ab, Shih-I Chu^b, Siyuan Han<sup>a

a</sup> Department of Physics and Astronomy, University of Kansas, 66045 Lawrence, Kansas, USA
^b Department of Chemistry, University of Kansas, and Kansas for Advanced Scientific Computing, 66045 Lawrence, Kansas, USA

Abstract: We present a quantum error correction code which protects three quantum bits (qubits) of quantum information against one erasure, i.e., a single-qubit arbitrary error at a known position. The present code has a high encoding efficiency since only one auxiliary qubit is needed for one message qubit on average. In addition, we note that the code can also work even in a worse case that the interaction with environment causes a leakage out of the qubit space. The code may have some applications in the storage of quantum information for a small-scale quantum computing, quantum information processing, and quantum communication.

PACS: 03.65.Bz, 03.67.Lx, 89.70.+c

Received: 16.12.2003

Language: English

 English version: Journal of Experimental and Theoretical Physics Letters, 2004, 79:5, 236–240

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