Three-qubit quantum error-correction scheme based on quantum cloning

2 quantum cloning transformation U to encode an unknown state \phi>\0>\0> into a three-qubit state U\phi>\0>\0>. The encoded state could protect against collective decoherences that any two qubits in a three-qubit system are affected by either phase error or bit flip error, or simultaneously affected by both of them. To recover the original unknown state, we just need to perform a Bell measurement on the first two qubits and rotate the third qubit along a suitable axis. Specially, our scheme for the first time shows that quantum cloning is useful for quantum error correction. (C) 2004 Elsevier B.V. All rights reserved. -->
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2004.07.025
Přístupová URL adresa: https://explore.openaire.eu/search/publication?articleId=doi_________::8d3396c48fe14cce2a26e97a9c6ddadc
https://doi.org/10.1016/j.physleta.2004.07.025
Rights: CLOSED
Přírůstkové číslo: edsair.doi...........8d3396c48fe14cce2a26e97a9c6ddadc
Autor: D. M. Wei, Xizhi Zeng, Jun Luo, Maili Liu, Xianping Sun
Rok vydání: 2004
Předmět:
Zdroj: Physics Letters A. 329:294-297
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2004.07.025
Popis: This Letter presents a three-qubit quantum error correction scheme that adopts the optimal universal 1 --> 2 quantum cloning transformation U to encode an unknown state \phi>\0>\0> into a three-qubit state U\phi>\0>\0>. The encoded state could protect against collective decoherences that any two qubits in a three-qubit system are affected by either phase error or bit flip error, or simultaneously affected by both of them. To recover the original unknown state, we just need to perform a Bell measurement on the first two qubits and rotate the third qubit along a suitable axis. Specially, our scheme for the first time shows that quantum cloning is useful for quantum error correction. (C) 2004 Elsevier B.V. All rights reserved.
Databáze: OpenAIRE
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