Error filtration and entanglement purification for quantum communication

N Gisin, N Linden, S Massar, S Popescu

Research output: Contribution to journalArticle (Academic Journal)peer-review

43 Citations (Scopus)


The key realization that led to the emergence of the new field of quantum information processing is that quantum mechanics, the theory that describes microscopic particles, allows the processing of information in fundamentally new ways. But just as in classical information processing, errors occur in quantum information processing, and these have to be corrected. A fundamental breakthrough was the realization that quantum error correction is in fact possible. However, most work so far has not been concerned with technological feasibility, but rather with proving that quantum error correction is possible in principle. Here we describe a method for filtering out errors and entanglement purification which is particularly suitable for quantum communication. Our method is conceptually new, and, crucially, it is easy to implement in a wide variety of physical systems with present-day technology and should therefore be of wide applicability.

Original languageEnglish
Article number012338
Pages (from-to)-
Number of pages17
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Issue number1
Publication statusPublished - Jul 2005


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