Date
2019-09-24Metadata
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Aufsatz
Reservoir engineering using quantum optimal control for qubit reset
Abstract
We determine how to optimally reset a superconducting qubit which interacts with a thermal environment in such a way that the coupling strength is tunable. Describing the system in terms of a time-local master equation with time-dependent decay rates and using quantum optimal control theory, we identify temporal shapes of tunable level splittings which maximize the efficiency of the reset protocol in terms of duration and error. Time-dependent level splittings imply a modification of the system-environment coupling, varying the decay rates as well as the Lindblad operators. Our approach thus demonstrates efficient reservoir engineering employing quantum optimal control. We find the optimized reset strategy to consist in maximizing the decay rate from one state and driving non-adiabatic population transfer into this strongly decaying state.
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Gefördert durch den Publikationsfonds der Universität KasselCitation
@article{doi:10.17170/kobra-20191121797,
author={Basilewitsch, Daniel and Cosco, Francesco and Lo Gullo, Nicolino and Möttönen, Mikko and Ala-Nissilä, Tapio and Koch, Christiane P. and Maniscalco, Sabrina},
title={Reservoir engineering using quantum optimal control for qubit reset},
journal={New Journal of Physics},
year={2019}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2019$n2019 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/11361 3000 Basilewitsch, Daniel 3010 Cosco, Francesco 3010 Lo Gullo, Nicolino 3010 Möttönen, Mikko 3010 Ala-Nissilä, Tapio 3010 Koch, Christiane P. 3010 Maniscalco, Sabrina 4000 Reservoir engineering using quantum optimal control for qubit reset / Basilewitsch, Daniel 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/11361=x R 4204 \$dAufsatz 4170 7136 ##0##http://hdl.handle.net/123456789/11361
<resource xsi:schemaLocation="http://datacite.org/schema/kernel-2.2 http://schema.datacite.org/meta/kernel-2.2/metadata.xsd"> 2019-11-21T14:48:01Z 2019-11-21T14:48:01Z 2019-09-24 doi:10.17170/kobra-20191121797 http://hdl.handle.net/123456789/11361 Gefördert durch den Publikationsfonds der Universität Kassel eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ quantum optimal control qubit initialization time-local master equation with time-dependent decay quantum reservoirengineering circuit QED 530 Reservoir engineering using quantum optimal control for qubit reset Aufsatz We determine how to optimally reset a superconducting qubit which interacts with a thermal environment in such a way that the coupling strength is tunable. Describing the system in terms of a time-local master equation with time-dependent decay rates and using quantum optimal control theory, we identify temporal shapes of tunable level splittings which maximize the efficiency of the reset protocol in terms of duration and error. Time-dependent level splittings imply a modification of the system-environment coupling, varying the decay rates as well as the Lindblad operators. Our approach thus demonstrates efficient reservoir engineering employing quantum optimal control. We find the optimized reset strategy to consist in maximizing the decay rate from one state and driving non-adiabatic population transfer into this strongly decaying state. open access Basilewitsch, Daniel Cosco, Francesco Lo Gullo, Nicolino Möttönen, Mikko Ala-Nissilä, Tapio Koch, Christiane P. Maniscalco, Sabrina doi:10.1088/1367-2630/ab41ad publishedVersion ISSN 1367-2630 New Journal of Physics 93054 21 </resource>
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