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Universal dynamical decoupling of multiqubit states from environment

Jiang, Liang and Imambekov, Adilet (2011) Universal dynamical decoupling of multiqubit states from environment. Physical Review A, 84 (6). Art. No. 060302. ISSN 1050-2947.

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We study the dynamical decoupling of multiqubit states from environment. For a system of m qubits, the nested Uhrig dynamical decoupling (NUDD) sequence can efficiently suppress generic decoherence induced by the system-environment interaction to order N using (N+1)^(2m) pulses. We prove that the NUDD sequence is universal, i.e., it can restore the coherence of an m-qubit quantum system independent of the details of the system-environment interaction. We also construct a general mapping between dynamical decoupling problems and discrete quantum walks in certain functional spaces.

Item Type:Article
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URLURL TypeDescription DOIArticle
Jiang, Liang0000-0002-0000-9342
Additional Information:© 2011 American Physical Society. Received 28 April 2011; published 28 December 2011. We thank John Preskill for helpful discussions. This work was supported by the Sherman Fairchild Foundation, A.P. Sloan Foundation under Grant No. BR-5123, and NSF Career Award DMR-1049082.
Funding AgencyGrant Number
Sherman Fairchild FoundationUNSPECIFIED
Alfred P. Sloan FoundationBR-5123
Issue or Number:6
Classification Code:PACS: 03.67.Pp, 03.65.Yz, 76.60.Lz, 82.56.Jn
Record Number:CaltechAUTHORS:20120206-131536680
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29154
Deposited By: Tony Diaz
Deposited On:01 Mar 2012 20:42
Last Modified:04 Nov 2019 23:08

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