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Abstract: We study a dephasing channel with memory, modelled by a Markov chain. We showthat even weak memory effects have a detrimental impact on the performance ofquantum error correcting schemes designed for uncorrelated errors. We alsodiscuss an alternative scheme that takes advantage of memory effects to protectquantum information.



Author: Antonio D'Arrigo, Elena De Leo, Giuliano Benenti, Giuseppe Falci

Source: https://arxiv.org/







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