Subgap dynamics of double quantum dot coupled between superconducting and normal leads

Abstract Dynamical processes induced by the external time-dependent fields can provide valuable insight into the characteristic energy scales of a given physical system. We investigate them here in a nanoscopic heterostructure, consisting of the double quantum dot coupled in series to the supercondu...

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Autores principales:	B. Baran, R. Taranko, T. Domański
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/aa6e00e4cfa04922afcab6c0e8681896
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spelling	oai:doaj.org-article:aa6e00e4cfa04922afcab6c0e86818962021-12-02T16:53:19ZSubgap dynamics of double quantum dot coupled between superconducting and normal leads10.1038/s41598-021-90080-22045-2322https://doaj.org/article/aa6e00e4cfa04922afcab6c0e86818962021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90080-2https://doaj.org/toc/2045-2322Abstract Dynamical processes induced by the external time-dependent fields can provide valuable insight into the characteristic energy scales of a given physical system. We investigate them here in a nanoscopic heterostructure, consisting of the double quantum dot coupled in series to the superconducting and the metallic reservoirs, analyzing its response to (i) abrupt bias voltage applied across the junction, (ii) sudden change of the energy levels, and imposed by (iii) their periodic driving. We explore subgap properties of this setup which are strictly related to the in-gap quasiparticles and discuss their signatures manifested in the time-dependent charge currents. The characteristic multi-mode oscillations, their beating patters and photon-assisted harmonics reveal a rich spectrum of dynamical features that might be important for designing the superconducting qubits.B. BaranR. TarankoT. DomańskiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q B. Baran R. Taranko T. Domański Subgap dynamics of double quantum dot coupled between superconducting and normal leads
description	Abstract Dynamical processes induced by the external time-dependent fields can provide valuable insight into the characteristic energy scales of a given physical system. We investigate them here in a nanoscopic heterostructure, consisting of the double quantum dot coupled in series to the superconducting and the metallic reservoirs, analyzing its response to (i) abrupt bias voltage applied across the junction, (ii) sudden change of the energy levels, and imposed by (iii) their periodic driving. We explore subgap properties of this setup which are strictly related to the in-gap quasiparticles and discuss their signatures manifested in the time-dependent charge currents. The characteristic multi-mode oscillations, their beating patters and photon-assisted harmonics reveal a rich spectrum of dynamical features that might be important for designing the superconducting qubits.
format	article
author	B. Baran R. Taranko T. Domański
author_facet	B. Baran R. Taranko T. Domański
author_sort	B. Baran
title	Subgap dynamics of double quantum dot coupled between superconducting and normal leads
title_short	Subgap dynamics of double quantum dot coupled between superconducting and normal leads
title_full	Subgap dynamics of double quantum dot coupled between superconducting and normal leads
title_fullStr	Subgap dynamics of double quantum dot coupled between superconducting and normal leads
title_full_unstemmed	Subgap dynamics of double quantum dot coupled between superconducting and normal leads
title_sort	subgap dynamics of double quantum dot coupled between superconducting and normal leads
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/aa6e00e4cfa04922afcab6c0e8681896
work_keys_str_mv	AT bbaran subgapdynamicsofdoublequantumdotcoupledbetweensuperconductingandnormalleads AT rtaranko subgapdynamicsofdoublequantumdotcoupledbetweensuperconductingandnormalleads AT tdomanski subgapdynamicsofdoublequantumdotcoupledbetweensuperconductingandnormalleads
_version_	1718382879796363264

Subgap dynamics of double quantum dot coupled between superconducting and normal leads

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