Show simple item record Heule, Rahel Bruder, Christoph Burgarth, Daniel Stojanović, Vladimir M. 2011-09-26T14:05:58Z 2011-09-26T14:05:58Z 2010
dc.identifier.citation Heule , R , Bruder , C , Burgarth , D & Stojanović , V M 2010 , ' Local quantum control of Heisenberg spin chains ' Physical Review A , vol 82 , 052333 . DOI: 10.1103/PhysRevA.82.052333 en
dc.identifier.issn 1050-2947
dc.identifier.other PURE: 171091
dc.identifier.other PURE UUID: 7f7ccc9f-dceb-47d2-88a8-affc582ade54
dc.identifier.other dspace: 2160/7593
dc.identifier.other RAD_Outputs_All_ID_Import_20121105.csv: row: 3870
dc.identifier.other Scopus: 78650989854
dc.description Heule, R., Bruder, C., Burgarth, D., Stojanović, V. M. (2010). Local quantum control of Heisenberg spin chains, Physical Review A, 82, Article No: 052333 en
dc.description.abstract Motivated by some recent results of quantum control theory, we discuss the feasibility of local operator control in arrays of interacting qubits modeled as isotropic Heisenberg spin chains. Acting on one of the end spins, we aim at finding piecewise-constant control pulses that lead to optimal fidelities for a chosen set of quantum gates. We analyze the robustness of the obtained results for the gate fidelities to random errors in the control fields, finding that with faster switching between piecewise-constant controls the system is less susceptible to these errors. The observed behavior falls into a generic class of physical phenomena that are related to a competition between resonance- and relaxation-type behavior, exemplified by motional narrowing in NMR experiments. Finally, we discuss how the obtained optimal gate fidelities are altered when the corresponding rapidly varying piecewise-constant control fields are smoothened through spectral filtering. en
dc.format.extent 8 en
dc.language.iso eng
dc.relation.ispartof Physical Review A en
dc.rights en
dc.title Local quantum control of Heisenberg spin chains en
dc.type /dk/atira/pure/researchoutput/researchoutputtypes/contributiontojournal/article en
dc.contributor.institution Department of Physics en
dc.contributor.institution Quantum Systems, Information and Control en
dc.description.status Peer reviewed en

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