Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevA.81.012331
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dc.titleUniversal dynamical decoupling: Two-qubit states and beyond
dc.contributor.authorMukhtar, M.
dc.contributor.authorSaw, T.B.
dc.contributor.authorSoh, W.T.
dc.contributor.authorGong, J.
dc.date.accessioned2014-10-16T09:48:08Z
dc.date.available2014-10-16T09:48:08Z
dc.date.issued2010-01-29
dc.identifier.citationMukhtar, M., Saw, T.B., Soh, W.T., Gong, J. (2010-01-29). Universal dynamical decoupling: Two-qubit states and beyond. Physical Review A - Atomic, Molecular, and Optical Physics 81 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.81.012331
dc.identifier.issn10502947
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/98525
dc.description.abstractUhrig's dynamical decoupling pulse sequence has emerged as a universal and highly promising approach to decoherence suppression. So far, both the theoretical and experimental studies have examined single-qubit decoherence only. This work extends Uhrig's universal dynamical decoupling from one-qubit to two-qubit systems and even to general multilevel quantum systems. In particular, we show that by designing appropriate control Hamiltonians for a two-qubit or a multilevel system, Uhrig's pulse sequence can also preserve a generalized quantum coherence measure to the order of 1+O(TN+1) with only N pulses. Our results lead to a very useful scheme for efficiently locking two-qubit entangled states. Future important applications of Uhrig's pulse sequence in preserving the quantum coherence of multilevel quantum systems can also be anticipated. © 2010 The American Physical Society.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1103/PhysRevA.81.012331
dc.sourceScopus
dc.typeArticle
dc.contributor.departmentPHYSICS
dc.description.doi10.1103/PhysRevA.81.012331
dc.description.sourcetitlePhysical Review A - Atomic, Molecular, and Optical Physics
dc.description.volume81
dc.description.issue1
dc.description.page-
dc.description.codenPLRAA
dc.identifier.isiut000277958100011
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