Entanglement production by quantum error correction in the presence of correlated environment

Gabriele De Chiara, R. Fazio, C. Macchiavello, Massimo Palma

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We analyze the effect of a quantum error correcting code on the entanglement of encoded logical qubits in the presence of a dephasing interaction with a correlated environment. Such correlated reservoir introduces entanglement between physical qubits. We show that for short times the quantum error correction interprets such entanglement as errors and suppresses it. However, for longer time, although quantum error correction is no longer able to correct errors, it enhances the rate of entanglement production due to the interaction with the environment.
Original languageEnglish
Pages (from-to)714-720
Number of pages7
JournalEurophysics Letters (EPL)
Volume67
Issue number5
DOIs
Publication statusPublished - 01 Sep 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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