Datum
2019-09-24Autor
Basilewitsch, DanielCosco, FrancescoLo Gullo, NicolinoMöttönen, MikkoAla-Nissilä, TapioKoch, Christiane P.Maniscalco, SabrinaSchlagwort
530 PhysikMetadata
Zur Langanzeige
Aufsatz
Reservoir engineering using quantum optimal control for qubit reset
Zusammenfassung
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.
Zitierform
In: New Journal of Physics 21 (2019-09-24) , S. 93054 ; ISSN 1367-2630Förderhinweis
Gefördert durch den Publikationsfonds der Universität KasselZitieren
@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}
}
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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
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:Urheberrechtlich geschützt