Please use this identifier to cite or link to this item: https://doi.org/10.1088/0953-4075/45/4/045501
Title: Protecting multi-qubit states in computational subspaces by nested dynamical decoupling sequences
Authors: Qiu, N.
Gong, J. 
Wang, X.-B.
Issue Date: 28-Feb-2012
Citation: Qiu, N., Gong, J., Wang, X.-B. (2012-02-28). Protecting multi-qubit states in computational subspaces by nested dynamical decoupling sequences. Journal of Physics B: Atomic, Molecular and Optical Physics 45 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1088/0953-4075/45/4/045501
Abstract: We propose to nest 3M layers of explicitly constructed Uhrigs dynamical decoupling sequences of local control operators to achieve universal high-order protection of arbitrary and unknown M-qubit states on a 2 M- dimensional computational subspace. This is the case even if the mechanism responsible for population leakage from the computational subspace is unclear and the actual form of systemenvironment coupling is not given. Simple numerical experiments are carried out to illustrate our theoretical proposal. © 2012 IOP Publishing Ltd.
Source Title: Journal of Physics B: Atomic, Molecular and Optical Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/97632
ISSN: 09534075
DOI: 10.1088/0953-4075/45/4/045501
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