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Universal Dynamic Decoupling and Quantum Walks in Functional Spaces

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Logo of University of Southern California (USC)University of Southern California (USC)
 Jiang, Liang

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Universal Dynamic Decoupling and Quantum Walks in Functional Spaces
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48
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CC Attribution - NonCommercial - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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Release Date2011
LanguageEnglish

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Abstract
We study the universal dynamic decoupling (DD) schemes, which can restore the coherence of quantum system independent of the details of system-environment interaction. We introduce a general mapping between DD sequences and quantum walks in functional spaces, and use it to prove the universality of various DD schemes such as quadratic DD, nested Uhrig DD, and Uhrig concatenated DD, as well as previously known universal schemes of concatenated DD, Uhrig DD and concatenated Uhrig DD.