Statistics of Tunneling Events in Three-Terminal Hybrid Devices with Quantum Dot

• Authors: G. Michałek , B. Bułka , T. Domański , K. Wysokiński
• Languages of publication: EN

Abstracts

EN

We investigate statistics of the tunneling events in the short time limit in terms of the waiting time distribution (WTD), defined as the probability for a delay time between two subsequent transitions of particles, and consider it for a quantum dot (QD) strongly coupled to a superconducting and weakly coupled to two normal electrodes. Our study focuses on the WTD in the subgap transport, when coherent exchange of the Cooper pairs occurs between the QD and the superconductor. The dynamics can be described in terms of a Markovian generalized master equation for the reduced density matrix. We observe coherent oscillations between the Andreev bound states in the correlated jumps, both for the local and non-local WTDs. In addition the analysis of the transient currents give us some insight into dominant relaxation processes in short time scales.

Keywords

EN

74.45.+c; 73.23.Hk; 72.70.+m; 73.63.Kv

Discipline

• 74.45.+c: Proximity effects; Andreev reflection; SN and SNS junctions
• 73.63.Kv: Quantum dots
• 73.23.Hk: Coulomb blockade; single-electron tunneling
• 72.70.+m: Noise processes and phenomena

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2018
• Volume: 133
• Issue: 3
• Pages: 391-393

Dates

published

2018-03

Contributors

author

G. Michałek

• Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

B. Bułka

• Institute of Molecular Physics, Polish Academy of Sciences, ul. M. Smoluchowskiego 17, 60-179 Poznań, Poland

author

T. Domański

• Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

author

K. Wysokiński

• Institute of Physics, M. Curie-Skłodowska University, pl. M. Curie-Skłodowskiej 1, 20-031 Lublin, Poland

References

• [1] T. Brandes, Ann. Phys. (Berlin) 17, 477 (2008), doi: 10.1002/andp.200810306
• [2] L. Rajabi, Ch. Pöltl, M. Governale, Phys. Rev. Lett. 111, 067002 (2013), doi: 10.1103/PhysRevLett.111.067002
• [3] J. Gramich, A. Baumgartner, C. Schönenberger, arXiv: 1612.01201v1 http://arXiv.org/abs/1612.01201v1
• [4] K. I. Wysokiński, J. Phys.: Condens. Matter 24, 335303 (2012), doi: 10.1088/0953-8984/24/33/335303
• [5] A. Braggio, M. Governale, M. G. Pala, J. König, Solid State Communications 151, 155 (2011), doi: 10.1088/0953-8984/28/14/145302

Identifiers

DOI

10.12693/APhysPolA.133.391